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All Technical Articles - Remote Sensing

All Newsroom Technical Articles, starting with the most recently posted:

Photonics West_thumb

From the SPIE Photonics West Show Daily: Three plenary speakers at LASE 2017 discussed the LIGO discovery of gravitational waves in space, laser-based direct-write methods, and high-power EUV light sources for lithography.

14 February 2017
Optical components move a high-resolution laser-scan pattern contained in a small field of view across a larger area, eliminating the need for heavy steering mechanisms on platforms such as helicopters.
19 January 2017
Results from a series of tests in a large saltwater tank demonstrate that IR polarimetric images provide much better contrast between oil and water than conventional visible and thermal IR measurements.
18 January 2017
A new aircraft-certified instrument is suitable for unattended operation on the Polar 6 aircraft, and will ultimately be redesigned as a future microsatellite payload.
4 January 2017
A new instrument operates in the far-UV wavelength range and is compatible with a range of satellite platforms for science and space-operation support endeavors.
20 December 2016
A novel synergetic approach enables the identification of large-amplitude, short-period internal solitary waves from high-rate satellite altimeter data.
5 December 2016
An adapted processing chain enhances targets of interest in camera images that have a non-static background, and can thus enable longer-range classification and identification of ships.
29 November 2016
Characterizing the spectral features of exhaust gases via IR hyperspectral detection enables the standoff detection of distant ships.
22 November 2016
Atmospheric absorption peaks and near-IR properties of common materials are used in a new method for studying water quality over large areas.
11 November 2016
A new and versatile method for integrating light-emitting nanoparticles, without loss of their unique properties, into glass is demonstrated.
8 November 2016

A reflection on the 40th anniversary of the fiber-optic gyro. (An SPIE Professional magazine article. )

2 November 2016
A 10cm3, physically robust instrument has been tested in wind-tunnel experiments, and is suitable for diffusion and convection studies.
28 October 2016

Custom optics and sensor systems are what powers the imagery in Google Earth. (An SPIE Professional magazine article. )

26 October 2016
A novel smooth pursuit tracking method can be used to accurately track small targets in aerial videos.
6 October 2016
Miniaturization of satellite remote sensing promises lower costs, and SeaHawk is a prime example, offering global coastal ocean color imagery comparable to previous larger and more expensive systems.
13 September 2016
The use of minimum resolvable contrast measurements enables a uniform approach to characterizing imaging sensor performance in the visible, near-IR, and shortwave IR spectral ranges.
31 August 2016
Emerging interferometric techniques are combined with uncooled microbolometers in the Miniaturized IR Detection of Atmospheric Species instrument.
9 August 2016
The impact of humidity observations, from the Sounder for Atmospheric Profiling of Humidity in the Intertropics by Radiometry instrument, on an existing unified model assimilation system is investigated.
3 August 2016
The complex paths of scattered light that are typically ignored in imaging can be analyzed using time-of-flight imaging systems.
20 July 2016
Global positioning satellite and satellite radar interferometry measurements indicate the birth of a magma chamber along the Taupo Volcanic Zone.
13 July 2016
Measurements taken from a new lidar observation system could support studies of cloud formation.
27 June 2016
A ground-based optical interferometer successfully detects geostationary satellites from the ground.
16 June 2016
A significantly more accurate model, which has been verified with rainfall measurements from a typhoon in Taiwan, is obtained by considering a topographic effect.
13 June 2016
An eye-safe, mid-IR hyperspectral active standoff detection system provides identification, detection, and confident quantification of chemical mixtures.
18 May 2016
Several multi-rotor unmanned aerial vehicles are used to demonstrate the potential applications of 3D imaging ladar systems.
17 May 2016
Ground penetrating radar was used for the first mapping of southern hairy-nosed wombat warrens under layers of limestone.
20 April 2016
Combining satellite imagery with social media data enables a good match between predictions and observations in emergency situations.
14 April 2016
Remote sensing technologies enable plant breeders and geneticists to characterize canopy function in thousands of plant varieties.
25 March 2016
A statistical analysis shows that the predictability of extreme events is different for distinct rogue-wave supporting systems.
7 March 2016
Reducing quantum fluctuations in the electromagnetic field of light enables high-resolution images to be obtained via remote sensing with potential applications in satellite-borne systems.
26 February 2016
Computer models are effective for predicting electro-optic sensor performance, as long as simulation software is validated against real-world observations.
22 February 2016
A miniature wireless optical remote chemical sensing network improves the accuracy of mid-wave and long-wave IR chemical detection.
8 February 2016
A near-IR laser spectroscopic technique enables continuous in situ measurements of methane emissions in rural northern India.
27 January 2016
A continuous-wave external-cavity quantum cascade laser is integrated with a multipass absorption cell to target a hydrogen peroxide interference-free absorption line at 1234.055cm−1.
15 January 2016
A new NASA satellite mission will improve hurricane forecasting by making frequent measurements of ocean surface winds.
30 December 2015
A novel double-pulse 2μm integrated path differential absorption lidar instrument has been developed for measuring carbon dioxide column content.
15 December 2015
Automatic detection and tracking of vehicles in high-resolution video data can support fast image analysis for large amounts of data.
8 December 2015
Deep-seated lithospheric folding can be revealed using a method that combines gravity inversion calculations and isostatic analyses.
23 November 2015
Spectral-spatial sharpening of images is achieved by numerically embedding line targets in obtained imagery, and by minimizing the differences between high-spatial-resolution and observed spectral signatures.
10 November 2015
The Asian Dust and Aerosol Lidar Observation Network has 20 stations equipped with several polarization-sensitive lidar instruments.
21 October 2015
Integration of multi-wavelength-range imaging spectrometry data improves geologic mapping by combining complementary information from visible, near-IR, shortwave-IR, and longwave-IR spectral regions.
1 October 2015
Numerical simulations reveal the effects of pollutants on bistatic electromagnetic scattering signatures.
1 September 2015
A new satellite system uses radar-radiometer technology to map global surface soil moisture, monitoring the links between the water, energy, and carbon cycles over land.
23 July 2015
Combining technologies from cosmic ray and laser physics can sweep space junk.
16 July 2015
The newly built Lund University Mobile Biosphere Observatory is used to monitor oscillatory signals from insect species traversing the atmosphere.
10 July 2015
Calculating emissivity from IR thermal images offers an indirect method of measuring water in soil some millimeters below ground.
1 July 2015
The prototype of a small, lightweight, and modular robotic vehicle has been deployed through the McMurdo ice shelf in Antarctica.
24 June 2015
A fractal analysis based on the Hurst exponent and performed on satellite images can measure changes on the Earth's surface.
16 June 2015
Radar backscatter using L-band microwave frequencies from the Advanced Land Observing Satellite enables the generation of maps of global forest cover for 2007–2010.
5 June 2015
Annual composite images from Formosat-2 have been used to generate a long-term and detailed landslide inventory for Taiwan.
27 May 2015
Nepal earthquake response with Aeryon sUAV

From satellites to smartphones, today's imaging technologies have proven instrumental to relief efforts in Nepal.

21 May 2015
A lidar documents weather conditions in the upper atmosphere for rocket measurements of turbulence to yield benchmark measurements for atmospheric circulation models.
7 May 2015
A lightweight, low-cost system with a wide viewing angle enables detection of intruder aircraft by unmanned aerial vehicles.
29 April 2015
A three-layer thinking engine effectively learns the objects in a complex scene and the relationships between them.
14 April 2015
A novel technique enables origami-style folding of 3D-printed electronic structures, reducing fabrication costs for complex radio frequency devices and packaging applications.
7 April 2015
IR light detects traces of explosives on surfaces of glass, paint, metal, and plastic at distances of up to several meters.
26 March 2015
A new video-rate instrument being developed will operate at extremely high frequencies.
20 March 2015
A new data set, which was derived using synthetic aperture radar satellite data and normalized image cross correlation, represents the first regional map of mountain glacier flow speeds in Alaska.
12 January 2015
A coordinated lidar network in the northeastern United States explored the optical properties of transported plumes from fires and dust and diagnosed chemical transport model concentration biases.
30 December 2014
Characterizing the turbulent wake of wind turbines enables their optimal arrangement in a wind farm, potentially increasing power output.
24 December 2014
A satellite system comprising active and passive microwave remote sensors enables synchronous accurate acquisition of key elements in the Earth's water cycle.
7 November 2014

The Visible and Near-IR Imaging Spectrometer onboard China's Chang'E 3 lunar rover uses non-collinear acousto-optic tunable filters to make mineralogical and compositional measurements.

22 October 2014
Highly sensitive visible/near-IR imagers in elliptical orbits provide frequently updated information on Arctic weather and sea ice conditions, even through the long polar night.
6 October 2014
A unified algorithm for retrieving a variety of atmospheric properties is applicable to remote sensing observations obtained from space, ground, and aircraft.
19 September 2014
Information generated from vehicle encounters aids localization during navigation signal outages.
19 September 2014

A pre-processing procedure can diminish the data noise from new-generation hyperspectral sensors, thus minimizing negative impacts on target detection algorithms.

18 September 2014
A resonantly-pumped, tunable, Q-switched holmium-doped yttrium aluminum garnet ceramic laser generates high energy and high beam quality in the 2μm region.
11 September 2014
New lidar systems and algorithms permit in situ real-time monitoring as part of a global network.
26 August 2014
Breaking down statements into their component facts, and developing a reporting format that includes the methods used to obtain them, helps improve the quality of image analysis.
21 August 2014
New instruments provide improved adaptive optics correction and allow the light emission from a planet to be resolved from the light of its host star.
8 August 2014

A new light-intensity modulation technique arising from a changing surface normal can measure the physical properties of a vibrating surface.

1 August 2014
A ground-based laser ranging system with atmospheric turbulence correction improves capabilities for tracking objects in orbit, alerting satellite operators to potential collisions.
31 July 2014
An integrated data fusion and mining technique predicts spatiotemporal microcystin distributions produced by harmful algal bloom.
23 July 2014
A novel imaging spectrometer enables the incorporation of captured 2D images with high-resolution spectral and temporal data for the analysis of transient events.
10 June 2014
Controlling the spatial coherence and polarization of electromagnetic waves sheds new light on the measurement of the polarized bidirectional reflection distribution function in remote sensing.
15 May 2014
Single-photon counting can be achieved with a Geiger-mode array to reduce the size, weight, and cost of future systems.
10 April 2014
Combining imaging, computation, software modeling, and satellite hosting systems with firefighting methods may enable cost-effective detection and monitoring of wildland fires in their first few minutes.
14 February 2014
A thermal measurement system architecture designed for real-time, long-term monitoring of transportation infrastructures was evaluated on a bridge in Switzerland.
23 January 2014
A proposed new concept uses laser radiation and a probe beam to detect electromagnetic signatures in the vicinity of radioactive material and enables standoff detection at distances greater than 100m.
30 October 2013
Increases in storm intensity and occurrence are demanding improved real-time sensors and prediction capabilities in storm forecasting.
29 October 2013
Nonlinear frequency mixing of two laser sources results in a widely tunable laser perfectly suited for molecular spectroscopy.
24 October 2013
Specialty fiber and component development may enable long-range laser radar and standoff chemical detection.
10 October 2013
The UV radiation Monitoring and Research Program provides long-term measurements of ground-level solar radiation over the continental United States.
7 October 2013
Novel tunable filter technology enables the launch of small remote sensing satellites at low cost and with greater frequency.
27 September 2013
Fluorescence characteristics of corals are measured using a new light detection and ranging system on a glass-bottom boat.
9 September 2013
Satellite gravity observations, hydrologic modeling, elevation data, and in situ measurements help to clarify uncertainties in water volume changes for a major water-control scheme.
3 September 2013
A new imaging device based on compressive sensing accurately captures remote hyperspectral images with significantly fewer measurements than standard cameras.
27 August 2013
A new approach uses hyperspectral and wideband data to identify concealed fissile materials remotely.
22 August 2013
Hyperspectral imaging data from a portable spectrometer can be used to map vulnerable and rapidly changing environments at high spatial resolution.
16 August 2013
Simulation technology that has greatly improved weather prediction is being expanded to assess the value of new observing systems for hurricane track and intensity forecasting.
12 August 2013
A radiometer and thermal IR imaging spectrometer designed for the BepiColombo mission to Mercury will allow surface mineralogy and temperature to be measured in unprecedented detail.
30 July 2013
The Japanese Superconducting Submillimeter-Wave Limb-Emission Sounder onboard the International Space Station can detect minor components of the atmosphere.
26 July 2013
Data from the Hyperspectral Imager for the Coastal Ocean (HICO), combined with innovative spectral processing algorithms, can reveal detailed pictures of the sources of water pollution.
22 July 2013
A better way of characterizing light could enable innovative applications in areas such as biological diagnostics and remote sensing.
27 June 2013
A remote sensing system will help detect forest fires in northern Algeria, and monitor sand aerosols from the Sahara and cement plants in the Algiers metropolitan area.
21 June 2013
A new observation station makes continuous measurements of water isotopes for climate studies, using several remotely-operated spectrometers and meteorological instruments.
17 June 2013
SpaceWire technology has been used in building a real-time imaging system for the Hayabusa2 mission.
17 June 2013
A South American network of lidar and remote sensing instruments can be used to minimize disruption caused by volcanic eruptions.
17 June 2013
A novel experiment validates 2D and 3D analytical solutions for the scattering of partially coherent beams from statistically rough surfaces. This research has applications in remote sensing using laser radar.
14 June 2013
A novel laser instrument design has been developed for measuring vertical and horizontal profiles.
12 June 2013
Optical and physical properties of aerosols are measured using a sun photometer to help understand the meteorology of an aerosol hotspot region.
30 May 2013

A model for constructing 2D tight frames provides a new way to analyze, visualize, and process data at multiple scales and directions.

29 May 2013
A novel hyperspectral imaging system can locate liquid chemical warfare agents at stand-off distances, improving operator safety and enabling the rapid survey of scenes.
15 May 2013
Combining images from airborne sensors enables accurate classification of materials and infrastructure in urban areas, enabling defense applications.
7 May 2013
Convex geometry is used to design new algorithms for finding endmembers.
1 May 2013
Accurate in situ information plays a crucial role in calibrating models to estimate and map salt marsh characteristics using satellite data.
16 April 2013

The Water for the World project is bringing fresh water to needy people by analyzing remote sensing imagery and other Earth observations.

16 April 2013
Object-based image analysis using data from the Rapideye satellite constellation reveals the density of mangrove vegetation.
11 April 2013
Exploiting spatial misregistration of a satellite hyperspectral sensor doubles spatial resolution.
20 March 2013
An unconventional synthetic aperture radar interferometry technique can be used to measure deformation of vegetated regions.
18 March 2013
A European network of atmosphere sensors uses multi-wavelength elastic-Raman lidar instruments in its infrastructure.
11 March 2013
Optical fiber technology employed in new, compact instruments can be used to measure atmospheric carbon dioxide content in previously unrepresented regions.
18 February 2013
High-resolution spectrometers enable new avenues in global carbon cycle research, including the first accurate retrievals of chlorophyll fluorescence from space as an indicator of photosynthetic activity.
15 February 2013
Developing algorithms used to generate soil moisture maps of agricultural, bare soils from synthetic aperture radar systems benefits from including ancillary information within a Bayesian retrieval scheme.
7 February 2013
A generic, graph-theory-based tracking method in videos helps solve the problem of tracking.
29 January 2013
Imaging static Fourier transform spectrometers could sharpen hyperspectral data acquisition on small satellites.
24 January 2013
Remote sensing of river stage and discharge using satellite imagery and digital elevation model data could provide an alternative to labor-intensive measurements on the ground.
4 January 2013
Lidar and ceilometer measurements were used to diagnose and correct overestimates of fine particulate pollution by an air quality model.
4 January 2013
A new multisensor technique combines infrared and microwave data from geostationary and polar-orbit satellites.
19 December 2012
A lightweight imaging spectrometer with a wide field of view increases spectral accuracy, improving data collection for earth science.
10 December 2012
A multi-wavelength lidar system in combination with ancillary data obtained by ground-based in situ instruments enables optical measurements of aerosol particles.
26 November 2012
Modifications to atmospheric imaging techniques can improve the resolution of images taken under water.
19 November 2012
A novel Raman lidar technique can provide efficient 3D monitoring for environmental surveys prior to seafloor exploration.
12 November 2012
The Mercury Laser Altimeter onboard MESSENGER involves unique design elements that deal with the challenges of being in orbit around Mercury.
26 October 2012
A multisatellite image-processing system can improve near-real-time precipitation measurement in remote, ungauged areas.
19 October 2012
Advanced computer vision and photogrammetry allow archeologists to create highly accurate 3D models and distortion-free images from oblique aerial photographs with little effort.
19 October 2012
A new compact, robust, and eye-safe scanning system detects and tracks respirable aerosols at mid- to long-range distances.
16 October 2012
Craig BarrettThe former chairman of Intel weighs in on the Optics and Photonics report from the National Academies.
10 September 2012
Automatic processing of remote sensing data is possible even when only limited or unpredictable a priori information is available on the characteristics of condition-dependent distortions.
13 September 2012
Combining microwave measurement and model prediction provides better soil moisture values and profiles.
13 September 2012
Better satellite measurements revealed a large-scale eddy-merging event along the Loop Current's northern front that reversed oil motion and highlighted limitations in predicting circulation in the Gulf.
13 September 2012
A new technique to optimize volumetric representation and advances in graphics processing have enabled efficient construction of 3D models from 2D imagery, while fully capturing the uncertainty in the data.
27 August 2012
Experimentation with random-signal devices aims to add capabilities to target detection devices.
13 August 2012
The GRACE Follow-on mission will use laser measurements of the distance between a pair of orbiting spacecraft to make gravity maps of Earth.
30 July 2012
The high quality spectra from novel push-broom thermal hyperspectral imagers makes them useful for characterizing materials in numerous defense, field, and industrial situations.
19 July 2012
High-performance, multi-channel systems can be deployed cost-effectively on small, unmanned aircraft for marine mammal surveys, search and rescue, border patrol, and littoral reconnaissance operations.
12 July 2012
In a historic decision, FIFA has approved goal-line technology.
6 July 2012

Whether you call it football or soccer, whether the ball crossed the goal line is critical to get right. FIFA will decide soon how to deal with controversial goal decisions.

21 June 2012
Underwater camera systems and sensors have advanced steadily since the wreckage was discovered in 1985.
12 April 2012
Lidar measurements of nonlinear sub-surface waves in a fjord agree with theoretical predictions based on in-situ profiles, opening the way for large-scale studies of internal-wave mixing processes.
26 March 2012
Harnessing LightStakeholders hope that the forthcoming study provides a shot in the arm for awareness and funding.
14 March 2012
The Tropospheric Monitoring Instrument will measure climate change and air quality from space with unprecedented spatial resolution and sensitivity.
12 March 2012
Rare earths are critical for optical polishingThe cost and availability of these important materials have had their ups and downs. The optics industry is using several strategies to make sure future needs are met.
9 January 2012
A compact and efficient sensor designed for small satellites uses an uncooled, commercial microbolometer array to measure interferometric IR radiation.
2 June 2011
Piezoresistive Wheatstone bridges allow acquisition of a variety of data in extreme environments.
27 May 2011
A laser-ranging sensor with picosecond timing resolution and sub-picosecond timing stability enables an order-of-magnitude improvement in synchronization precision and accuracy.
27 May 2011
The Vice-Chairman of the Joint Chiefs of Staff spoke at SPIE Defense, Security and Sensing 2011 about the implications of the volume of data now available from deployed sensors.
24 May 2011
A scheme for identifying altered features of cityscapes that compares existing building models with new lidar data points and aerial images improves the accuracy of 3D spatial information.
19 May 2011
Laser satellite measurements within a dedicated model can accurately predict volcanic plume positions.
6 May 2011
A technique borrowed from astronomy employs ground-based apparatus and sodium in the upper atmosphere to determine geomagnetic fields with high precision and at relatively low cost.
2 May 2011
Smaller, faster, cheaper optical biosensors offer the capacity to provide effective and actionable information.
28 April 2011
The Deepwater Horizon incident required a wide variety of measurement techniques to find and track oil because of its deep source and the complicated ocean environment.
19 April 2011
An integrated ocean observation system for tracking oil, implemented immediately after the well exploded, aided federal and state agencies in mitigation attempts.
19 April 2011
A new, low-cost system based on geometrical imaging can measure distances with a sensitivity better than one part in 10,000.
12 April 2011
A new adaptive, lossless coder uses small data blocks, minimizes processing requirements, and offers high data-compression efficiency in almost any situation.
8 April 2011
Novel techniques can reduce dimensionality to derive better remote-sensing products.
21 March 2011
New quantum-cascade semiconductor lasers operating at mid-IR wavelengths are leading to new, compact sensors that monitor greenhouse gases.
18 March 2011
Synergy of remote observations, model predictions, and radiative transfer leads to better understanding of cloud formation.
4 March 2011
We employ bilateral filters for scene-based nonuniformity corrections to significantly reduce ghosting artifacts and enhance the visual quality of IR images.
28 February 2011
High-resolution optical satellite sensors can contribute to improved coastal and land management, hazard mitigation, emergency response, and ecosystem-service design.
23 February 2011
A sensitized microring resonator provides selective detection of trinitrotoluene down to 5.29 parts per billion or less in a low-cost, reusable, chip-scale design.
11 February 2011
By studying the time evolution of substances' responses to terahertz radiation, materials of interest can be differentiated in a way not permitted by frequency domain analysis alone.
9 February 2011
The information in hyperspectral images is better preserved by enhancing the discriminant features during compression.
7 February 2011
Remote sensing of reflectance peak shifts and polarized radiance may detect red tides.
29 January 2011
Boundary-layer concentrations of carbon monoxide, an important pollutant, can now be measured from space by exploiting the multispectral capabilities of MOPITT (Measurements of Pollution in the Troposphere).
20 January 2011
A micro air vehicle with onboard intelligence can maneuver in hard-to-reach parts of disaster areas and provide video images for search-and-rescue operations.
13 January 2011
A standards facility provides the most accurate available radiometric calibration of IR, optical ground, and space-based remote-sensing instruments.
7 January 2011

His underwater tools include cameras and sensors, and he uses them to unlock the mysteries of life in the ocean.

5 January 2011
A newly developed signal-processing technology based on wavelets can improve the performance of satellite sensors by up to a factor of two.
5 January 2011
Fluorescent optical ranging systems can rapidly assess and map concentrations of marine oil pollution suspended in the top few meters below the water surface.
21 December 2010

Training more high-school physics teachers and increasing student learning are two of the challenges facing math, science, and engineering education in the United States.

17 December 2010
Despite the split of the joint NOAA-NASA-DOD project, the instruments planned for the mission are still headed for space.
16 December 2010
A newly developed algorithm for processing hourly satellite data will provide information on aerosols over East Asia, including aerosol optical depth over turbid water.
16 December 2010
Hartmann sensor data can reveal rapid variation in optical-turbulence coherence length and produce estimates of the Greenwood frequency and inner scale.
14 December 2010
Will the sun come out? Knowing the answer can have a big impact on the power grid. Jan Kleissl explains a prototype system at UCSD.
13 December 2010
EARLINET performed almost continuous lidar measurements in April–May 2010 to follow the evolution of the volcanic plume generated by the eruption of the Eyjafjallajökull volcano.
29 November 2010
Volcanic plumes detected in the tropical upper troposphere and lower stratosphere with spaceborne lidar highlight the influence of moderate eruptions on the stratospheric-aerosol background.
29 November 2010
Real-time locating systems measure and track objects in an indoor enivornment using a variety of technologies.
23 November 2010
Recent progress in advanced semiconductor light sources, together with their brightness and narrow linewidth, should help overcome resistance to their widespread application.
17 November 2010
Water-vapor sounder data from NASA's Earth Observing System satellite Aqua facilitates significant improvements in hurricane-path and intensity predictions.
27 October 2010
With the number of satellites growing quickly, it is important to create an international framework to share mission results.
25 October 2010
The potential of oil-spill classification from multispectral data is enhanced by a new technique based on using support-vector machines.
21 October 2010
New automotive technologies including photonics are about to change how and what we drive
4 October 2010
Satellite-derived vegetation phenology indicates that earlier greenup and longer growing lengths occur at 45–50°N compared to other latitudes in deciduous broadleaf forest in the eastern US.
27 September 2010
The disaster-reduction system of China's environment and disaster monitoring and forecasting satellites monitors natural and man-made catastrophes.
17 September 2010
Ion-photon-emission microscopy is a promising new method for testing the radiation hardness of integrated circuits.
7 September 2010
High-spatial-resolution measurements of the optical and microphysical properties of aerosols could improve air-quality monitoring in cities by enabling identification of sources and control measures.
3 September 2010
Lidar can help map forests, track sea level change, and possibly save lives in a natural disaster.
25 August 2010
Municipal beaches in Cyprus will be monitored by integrating satellite remote sensing, wireless sensors deployed on buoys, and field spectroscopy.
17 August 2010
Microwave remote sensing of ocean-surface winds from space enables improved quantification of their impact on weather analyses and forecasts.
16 August 2010
High-speed optical detectors that are sensitive in the near-IR wavelength region have application in global 3D mapping, atmospheric gas measurements, and laser communications.
11 August 2010
A new instrumentation platform allows for battery-powered sensors in a wide-area network that can accurately monitor trace gases.
2 August 2010
The Mercury Radiometer and Thermal infrared Imaging Spectrometer will systematically map Mercury to obtain crucial new data about the planet's surface composition and temperature.
29 July 2010
Visual sensors and an inertial navigation system mounted on a helium balloon can collect high-definition video that is synchronized with metadata.
21 July 2010
A NASA state-of-the-art, high-spectral-resolution, IR spectrometer has enabled significant progress toward improving numerical weather prediction and understanding climate processes.
16 July 2010
Long-range, non-contact acoustic measurement devices can be used to obtain the audio signals of a human, a vehicle, or another object.
30 June 2010
New remote-sensing observations indicate that water droplets produced by breaking waves generate bright microwave radar returns.
30 June 2010
Satellite-based synthetic-aperture-radar data acquired in ascending and descending tracks enables assessment of the vertical and east–west components of surface perturbations.
10 June 2010
Self-powered, integrated systems-on-a-chip are key to developing extremely low-power devices for applications in commercial, defense, space, harsh-environment, and medical settings.
26 May 2010
The Canadian Space Agency has developed novel compression technologies with near-lossless performance, provided compression errors are not larger than the original signal's intrinsic noise.
25 May 2010
A novel interferometric radiometer delivers frequent global measurements of surface-soil moisture and sea-surface salinity.
19 May 2010
A multispectral approach that relies on remote-sensing measurements by NASA's Moderate Resolution Imaging Spectroradiometer makes it possible to distinguish polluting smoke from clouds.
9 May 2010
Combining bidirectional-reflectance distribution functions of selected materials with airborne-laser and imaging-spectrometer data improves quantitative mapping accuracy.
7 April 2010
Commercial digital cameras can detect constituent concentrations from in situ ocean-color measurements.
7 April 2010
A newly developed imaging system aids companies in the agri-food and industrial sectors to achieve high-speed online inspection and enhanced quality control.
6 April 2010
Simulated intensity-modulated light propagation predicts temporal irradiance profiles for detection and validation within proposed undersea laser-sensor networks.
9 March 2010
Technology developments for a next-generation, swath-mapping laser-altimeter system will soon reach the demonstration phase.
1 March 2010
Crop consumptive water use, biophysical parameters, and water productivity values can be mapped to support ‘more crops per drop.’
22 February 2010
Novel optical systems show excellent properties for laser-induced fluorescence detection of dangerous aerosols, hydrosols, chemicals, and explosives.
2 February 2010
An emerging optical technology that can potentially be used to observe rapidly changing scenes is successfully demonstrated at wavelengths from 8.4 to 11.6μm.
28 December 2009
A new type of silicon-waveguide spectrometer is launch-friendly and has a significantly increased optical throughput at subnanometer resolution.
16 December 2009
A new research center is developing high-frequency Doppler radar for mapping and surveillance of islands and remote locations.
30 November 2009
Plasmonic lenses can be made extremely small to enable integration into focal-plane array detectors for full Stokes-parameter polarimetric imaging.
17 November 2009
Advanced image-processing algorithms achieve improvements in performance of up to two orders of magnitude compared with current optimal implementations.
29 October 2009
Combining lidar observations with in situ measurements and models aids monitoring of different atmospheric parameters over various space-time scales.
15 October 2009
A newly developed UV lidar aboard an ultralight airplane provides detailed vegetation and atmospheric characterization.
28 September 2009
A versatile, novel approach enables assessment of the number of spectrally distinct signatures in data covering a large spectral range.
28 September 2009
A new signal processor can retrack waveforms in coastal areas and facilitate retrieval of accurate sea conditions.
10 September 2009
Laser terminals can boost data rates by orders of magnitude to solve the bottleneck in sensor downlinks.
26 August 2009
Combining supervised and unsupervised feature recognition improves classification accuracy by alleviating the impact from trivial intraclass variations.
19 August 2009
The former president of MIT spoke at the SPIE Optics + Photonics Symposium Awards Banquet.
13 August 2009
A wavelet method that employs Monte Carlo ray sampling fully accounts for diffraction and interference in complex media.
7 August 2009
Long-term monitoring of atmospheric composition indicates tentative recovery of stratospheric ozone concentrations.
27 July 2009
Large-aperture scintillometers can be used for evapotranspiration measurements on scales of individual fields.
13 July 2009
Laser-induced fluorescence emission techniques enable ground and remote sensing of photosynthetic microorganisms living in the snow and ice.
7 July 2009
Data from the Geostationary Operational Environmental Satellite series is analyzed to yield information about land surface temperature.
23 June 2009
Salts depress the freezing temperature and vapor pressure of moisture, allowing aqueous solutions to form.
18 June 2009
Apparent superiority of sophisticated detection algorithms in test conditions does not necessarily imply the same in real-world hyperspectral imaging applications.
17 June 2009
A new algorithm enables rapid and accurate determination from space of forest disturbance on a regional scale.
12 June 2009
Top SPIE Newsroom articles from the previous month, and papers from SPIE Journals and Conference Proceedings.
9 June 2009
Satellite multispectral measurements provide accurate images of the intensity of forest fires over time.
28 April 2009
Using multispectral satellite active-sensor observations avoids the uncertainties associated with lidar-inversion algorithms.
16 April 2009
A newly launched satellite provides good-quality cloud-free radar imagery useful for mapping rice-crop areas with an accuracy of 80%.
9 April 2009
Using data obtained from hyperspectral imagery enables to effectively track invasive plant infestation at the species level.
25 March 2009
The National Ecological Observatory Network will provide advanced scientific capabilities and data resources for experiments related to ecological change.
13 March 2009
Satellite sensors track sources of desert dust for models that predict particle entrainment and atmospheric pollution, resulting in new tools to support public safety and health services.
9 February 2009
Tools are being developed to quantify the net loss in image usefulness associated with lightweight-mirror figure errors when using post-processing compensation.
12 January 2009
By incorporating information from hundreds of contiguous spectral bands, hyperspectral imaging provides a fuller picture of an unknown target than previously possible.
24 December 2008
A newly developed electric-field sensing technology with unprecedented sensitivity and noise immunity can passively acquire physiological signals in an electrically noisy environment.
17 December 2008
Coupling small multifunctional sensors onboard unmanned aerial robots guided by autonomous navigation systems enables precision agriculture.
17 December 2008
NASA's Climate Absolute Radiance and Refractivity Observatory will measure climate change from space with a new standard in high accuracy combined with techniques to improve climate-forecast models.
2 December 2008
The European Global Earth Observation and Monitoring project aims to construct an integrated, pan-European atmospheric monitoring program from existing systems to study air quality and climate change.
24 November 2008
Observations of very thin cirrus clouds enable development of improved meteorological and climate models.
5 November 2008
The Army seeks to develop fundamental technologies that will enable ensembles of palm-sized unmanned systems to support personnel operating in a variety of dangerous environments.
29 October 2008

Presentations at the SPIE Europe Security + Defence symposium highlight the synergy of detection and data-processing software to identify potential threats.

21 October 2008
NASA's QuikSCAT satellite maps the global wind characteristics over the oceans to achieve optimal deployment of wind farms and to understand weather and climate changes.
8 October 2008

Despite challenges, the High Resolution Dynamics Limb Sounder (HIRDLS) has been able to provide unique, direct observations on the structure and composition of the atmosphere.

6 October 2008

Thanks to the NASA Earth Decadal Survey, new passive and active optical sensors are being included in future NASA and NOAA missions to better understand Earth system science and address the challenges of climate change.

6 October 2008
An airborne infrared imaging spectrometer overcomes vibration to detect harmful compounds up to 5km away.
6 October 2008
A coordinated network of advanced remote-sensing stations tracks, measures, and characterizes atmospheric aerosol for use in climate and environmental research.
3 October 2008

Fire management requires near real-time information. Using archived MODIS data and a Direct Broadcast satellite, the U.S.D.A. Forest Service has been able to monitor fires and develop a fire forecast system.

1 October 2008
Combining ground-based and space-borne observations of polar stratospheric clouds with calculation of the associated air mass trajectories helps in understanding how and when these clouds form.
29 September 2008
Satellite and shipboard data reveal the intermittent vertical information of the transport mechanism from turbulence and internal waves, which emit within the ocean, the atmosphere, and by planets and stars.
24 September 2008
Two laser-radar systems in South Africa offer great potential to characterize the region's atmospheric particulate matter and pollutants.
16 September 2008
The spatial distribution of weeds can be mapped from digitally recorded images and used to target the application of herbicides.
9 September 2008
Using a series of elemental 2D images can lead to a low-cost alternative to laser radar imaging for short-range object recognition.
18 August 2008
A novel near-infrared imaging technique could catch threats using portable equipment.
14 August 2008
A new pixel-by-pixel method allows for easy parallel processing of hard-to-detect signals while performing as well as matched filter techniques.
8 August 2008
Algorithms applied to low-resolution images can help develop non-intrusive remote-sensing instrumentation for indoor tracking.
4 August 2008
Studying the highest cloud layer in the upper atmosphere presents a significant technical challenge for remote-sensing techniques.
1 August 2008
A novel method for illumination suppression using a two-stage correction process allows for robust image reconstruction.
17 July 2008
The psychology of remote-operator environmental awareness is an important area of inquiry in which recent advances enable improved deployment of robotic vehicles.
17 July 2008
Kernel methods increase the accuracy of remote-sensing data processing, including specific land-cover identification, biophysical parameter estimation, and feature extraction.
26 June 2008
The best topographic map of the lunar south pole, generated by radar interferometry using Goldstone Solar System Radar data, provides valuable information for lunar exploration and science.
16 June 2008
A polarimetric algorithm allows scientists to distinguish irregularly shaped dust particles when observed from great distances.
5 June 2008
A bio-optical model calibrated with field measurements provide evidence of decreasing macrophyte colonization between 1997 and 2005 in southern Lake Garda.
26 May 2008
A design concept for a far-ultraviolet monochromator permits simultaneous multiwavelength imaging, providing a new remote-sensing tool to study the atmospheres of the Earth and other planets.
15 May 2008
Using hyperspectral remote sensing data, a new processing technique extracts multiple layers of environmental information about a coral reef ecosystem.
5 May 2008
Processing massive and complex data with brainlike neural computation is critical to achieving onboard decision-making systems for robotic missions on Earth and in space.
30 April 2008
The Juno mission will use an unusual polar orbit to examine Jupiter's deep atmosphere and the mechanisms generating its powerful aurora.
15 April 2008
A framework that combines correlation arrays over time using probabilistic models can improve automatic target detection and tracking.
1 April 2008
Atmospheric information from satellite images can successfully be estimated by neural networks, despite intruding effects.
21 March 2008
A cost-effective, integrated strategy of human-robotic exploration for resources should also apply principles of sustainability.
19 March 2008
A novel approach shows the value of polarimetric Envisat data for a range of important security and environmental applications.
9 March 2008
Continuous monitoring of industrial pollution sources can be accomplished with relatively simple eye-safe laser systems using retroreflectors.
5 March 2008
Lidar effectively detects and characterizes air contaminants with spatial and temporal resolution.
21 February 2008
A telescope positioned in the shadow of an external light blocker could image earth-like planets around nearby stars.
4 February 2008
Solar wind electrons can enter the polar atmosphere and create auroras that move from dayside to nightside and show a dawn-dusk aligned structure.
26 January 2008
A proposed model recalibrates images taken during hurricane Katrina by synthetic aperture radar on RADARSAT-1 in order to estimate near-surface winds over the ocean.
17 January 2008
Machine vision is used to remotely control water access by wildlife and livestock.
11 January 2008
From nearly 400 hyperspectral measurements of water color, the primary spectral bands for ocean-color remote sensing are determined via first- and second-order derivatives.
11 December 2007
Freely available software enables organized storage of comprehensive spectral information and promotes data exchange among research groups in the remote-sensing community.
11 December 2007
Parallel optical processing allows a new instrument to capture both images and spectra without scanning.
11 December 2007
Spectral orders of diffraction gratings, together with multiwaveband focal plane arrays, enable an imaging spectrometer that operates over an exceptionally broad range.
9 December 2007
The diverse data capabilities of satellite remote sensing combined with socioeconomic information prove a powerful tool for mapping and monitoring emerging urban changes.
28 November 2007
An efficient method that exploits wavelet analysis and the Kalman filter can enhance spatial resolution of satellite optical images.
27 November 2007
At the DARPA Urban Challenge, autonomous vehicles proved they have a future. This SPIE Newsroom video shows some of the action and talks about the technology.
14 November 2007
A novel design senses curvature, twisting angle, and temperature gradient in a single optical fiber for structure monitoring.
13 November 2007
A system that monitors the presence of walkers at street intersections can be tied to traffic light controllers to improve safety.
12 November 2007
Autonomous vehicle technology took a big step closer to reality as six robotic cars completed a 60-mile course on city streets.
5 November 2007
Satellite imagery offers a lower-cost and less time consuming alternative to traditional methods for mapping atmospheric concentrations of aerosols.
19 October 2007
Video-rate imaging has been made possible with high repetition rates and demonstrated in an environmental monitoring application.
7 October 2007
Coherent optical detection is essential to providing with superior range, resolution and sensitivity.
7 October 2007
Polarization information can help classify materials and identify objects of interest for remote sensing and military applications.
30 September 2007
Remote-sensing methods inform sustainable urban planning for post-industrial cities like Leipzig, Germany.
24 September 2007
The condition of structures incorporating fiber-reinforced polymer composites can be visualized using distant inverse synthetic aperture radar measurements integrated with tomographic image reconstruction.
23 September 2007
During the FIFA soccer World Cup, scanning imaging infrared remote sensing systems identified and located various gases in the air over public areas.
4 September 2007
A probabilistic approach should help assess the efficiency of various vegetation indices, used in mapping land cover.
23 August 2007

Upendra Singh talks about the NASA Laser Risk Reduction Program, the 2-micron laser, and changes in remote sensing.

15 August 2007
Permanent sensor infrastructure can provide smart capabilities and help monitor aging.
14 August 2007
Increased demand, advanced technologies, and limited resources will all play roles in remote sensing’s potentially sunny, but challenging, future.
15 July 2007
A new ground-based technique measures minerals in their natural conditions, a prerequisite for satellite data processing.
10 July 2007
The wireless ShapeAccelArray sensing system can simultaneously measure 3D acceleration and permanent ground deformation down to depths of 100m.
4 July 2007
Observation of aerosols and clouds ongoing at Pune, a tropical station in India, has implications for global climate studies.
21 June 2007
Ground-based measurements reveal the terrain beneath the 3km-thick Greenland ice sheet.
14 June 2007
Imaging slices of atmosphere using a gated viewing camera during double-pulse laser illumination makes it possible to visualize clear air turbulence.
13 June 2007
For the detection of shock waves and high-speed phenomena in explosive materials, fiber-based systems are safer and cheaper than electronics.
12 June 2007
Optical detection of wear and defects in an electro-supply network shows promise for railways and other electrically powered vehicles.
23 May 2007
Small subsidence level changes associated with shallow underground mining can be detected over periods as short as one month.
22 May 2007
An atmospheric monitor based on a microcantilever device coated with a reactive metal measures exposure to low levels of corrosive gases.
4 May 2007
Geographic information systems techniques combine space imagery with ground-based geophysical data to enhance resource management and build new risk models.
2 April 2007
Using a variety of instruments on both ship and satellite, phytoplankton off the coast of India can be monitored as they respond to environmental conditions.
22 March 2007
Three-dimensional virtual globes are successfully using realistic Earth-surface skins from remote sensing data to create intuitive and user-friendly graphic interfaces for nontechnical public consumers.
21 March 2007
A laser-based technique can monitor sap flow in trees, solving a long-standing problem in plant biology with additional implications for climate change modeling.
20 March 2007
A laser-based technique can monitor sap flow in trees, solving a long-standing problem in plant biology with additional implications for climate change modeling.
20 March 2007
An object-based storage model for massive distributed remote sensing images performs much better than traditional network storage models.
16 March 2007
A new technique can immobilize and stretch a large number of DNA molecules for single-molecule DNA analysis applications.
15 March 2007
A lidar system is used to observe tree species and their chlorophyll content, laying the groundwork for a remote approach to forest ecosystem monitoring.
15 March 2007
Combining statistics with machine-learning represents an effective and efficient approach to contextual image classification.
6 March 2007
Varied wavelengths enhance monitoring of phytoplankton by laser-induced fluorescenceAll dissolved organic matter fluoresces under UV excitation, but only fresh DOM fluoresces under green light, providing a way to track degradation.
5 March 2007
RF-controlled battery-less microvalves are fabricated on a biocompatible substrate that allows for communication and remote actuation.
5 March 2007
Embedding a Bragg grating in an optical fiber improves the sensitivity and measuring resolution of micro- and nano-scale 3D probes.
27 February 2007
Using lossy compression theory to model how the brain receives sensory data may suggest new approaches to image and signal compression.
27 February 2007
Three satellite multispectral imageries are evaluated as methods of survey for the diminishing coral population of the Dong-Sha Atoll.
21 February 2007
Four years of data from the Atmospheric Infrared Sounder improves weather forecasting, provides new information about greenhouse gases, and improves climate models.
20 February 2007
A linear correlation between absorbance at 350nm and concentration and fluorescence of chromatic dissolved organic matter in lake waters promises more accurate measurements.
20 February 2007
Radar waves penetrate sand cover to reveal sub-surface courses of ancient, now-dry rivers and to inform groundwater resource management decisions.
6 February 2007
This month's featured patent review by analysts from Nerac
31 February 2007
A novel band selection technique developed for feature extraction of hyperspectral images uses a heuristic optimization algorithm.
29 January 2007
Conventional hyperspectral processing methods applied to current-generation satellite hyperspectral data improve results.
15 January 2007
Technology developments have enabled the deployment of hyperspectral sensors to new application areas.
4 January 2007
Providing small, low-cost lidar systems with novel optical design and flexible electronics enables new environmental monitoring applications.
1 January 2007
Developments in hand-held assay device technology improve the detection and quantification of chemical and biological warfare agents in real time.
26 December 2006
Standoff sensing performed in real time by exploiting the spectral properties of bioaerosols facilitates classification of detected materials.
21 December 2006
The quantum cascade laser's unique properties -- especially its power, tuning range and ability to work pulsed at room temperature -- make it ideal for a variety of gas sensing applications.
17 December 2006
A Web-based interface for reference spectra of natural surfaces facilitates data sharing and increases access to reference material for classification.
12 December 2006
A high-energy single-frequency pump laser, capable of operating in harsh environments, represents an enabling technology for remote sensing from space.
3 December 2006
The design of radar systems suitable for unmanned aerial vehicles represents both advances in technology and acceptable tradeoffs.
30 December 2006
A single sensor can be used to extract 3D information from a scene by computing the orientation angles of the emitting surface normal vector.
17 November 2006
By adapting techniques used for gravitational-wave detection, a new fiber-based sensing methodology enables unprecedented remote broadband strain detection at acoustic frequencies.
1 November 2006
By adjusting the composition of thin films, particularly the elements used for doping, these materials can detect gases with high sensitivity.
1 November 2006
Fractal information boosts the performance of a neural network approach to detecting targets and target features in heavy clutter.
31 November 2006
New optical and analytical technologies are being developed to detect dangerous materials from various distances and against background interferences.
3 October 2006
This month's featured patent review by analysts from Nerac
2 October 2006
Simulations involving antenna patterns show an assumption underlying a widely used turbulence phase-correction method may be wrong.
2 October 2006
New techniques for incorporating nanostructures into hybrid nanoporous/microporous silicon allow both enhanced chemical sensors and efficient microreactors.
26 September 2006
A scalable, large format, data and power efficient imaging spectrometer with a high speed, digitally tunable optical filter enables rapid selection of spectral bands of interest.
20 September 2006
An open-platform framework improves Internet web mapping by combining the richness of traditional desktop applications with the reach of browser-based systems.
5 September 2006
Optical characteristics of seawater are measured to identify freshwater inputs, enabling the location of valuable springs.
14 August 2006
CanadaSpace-based techniques are being used to map Canada's forested ecozones in a multi-year project to help meet climate-change and sustainable forest management reporting requirements.
13 August 2006
Advances in surveillance software that maps sensor pixels to ground coordinates allow the study of diverse scenarios for the detection of hostile events and the tracking of their perpetrators.
7 August 2006
Local-level, high-accuracy topographic maps are produced from satellite-borne radiometer images.
2 August 2006
Objects of a large-scale scene from an airborne camera can be automatically detected, measured, and visualized as multiple panoramic images.
1 August 2006
Controlled thermal interdiffusion was used to fabricate a two-color InGaAs/GaAs quantum dot IR photodetector with 0.8μm-offset peak responses.
11 July 2006
Developing computationally efficient processing techniques for massive volumes of hyperspectral data is critical for space-based Earth science and planetary exploration.
7 July 2006
At an ideal location in the southern subtropics, an atmospheric station hosts a suite of specialized instruments, producing data for many applications.
3 July 2006
CALIPSO, one of NASA's newest satellite missions, is providing observations of cloud and aerosol to improve our understanding of their role in Earth's climate system.
3 July 2006
Laser radar observations from 13 widely distributed sites confirm the high data quality of GOMOS, the first operational satellite instrument that measures ozone profiles using stellar occultations.
28 June 2006
The next generation of large-aperture space telescopes for astronomy and Earth science require dramatic technology advances in the manufacture of lightweight, affordable optics.
23 June 2006
Compact, inexpensive, temperature-tunable thin-film filters take advantage of thermal properties of amorphous semiconductors.
23 May 2006
Near-infrared spectroscopy can be used to accurately predict certain soil properties, making it a valuable tool in precision farming.
22 May 2006
A new weighted index integrates information about the type of green space being observed and how people feel about it.
21 May 2006
For optimal data acquisition and the ability to choose the optical configuration that closely fits the user's needs, good knowledge of the versatile multi-spectral airborne system being used is required.
27 April 2006
IR spectrometer measurements can determine the temperature of a stack plume, with the help of molecular physics.
27 April 2006
The chlorophyll fluorescence spectrum of algae in seawater can be extracted from the overlapping elastic-scattering spectrum by exploiting the polarization of the scattered signal.
20 April 2006
A new family of marking materials allows unambiguous ID of emergency service vehicles by surveillance aircraft.
17 April 2006
A coded-aperture spectrometer provides higher-throughput measurement of an extended source than a slit-based instrument.
31 March 2006
A new algorithm allows optical distortions caused by atmospheric turbulence to be suppressed in long-range video.
28 March 2006
A technique that allows soft x-rays to be focused using reflective elements that mimic a lobster's eye is extended to hard x-rays.
21 March 2006
Coupled with an odor-sample concentrator, these devices can be extremely effective for identifying the presence of fragrant natural products and chemicals, even in very low concentrations.
17 March 2006
Detection of the presence of micron-size particles and bacterial cells in drinking water using light scattering or fluorescence measurements can be made more sensitive using an enrichment procedure.
3 March 2006
Developing functional substrates for organic solar cells offers the potential for cost-effective production.
28 February 2006
Rare glowing-water effects known as ‘milky seas’ are generally attributed to bacterial bioluminescence, but their causes are still a mystery. Low-light satellite measurements have now provided the first overview of a milky sea, observed off the Somali coast and spanning ~15,000km2. The findings offer new hope for learning about these extraordinary displays.
7 February 2006

A scanning near-field infrared radiometry system, based on tapered silver-halide fibers, for making sub-wavelength temperature measurements.1 It may be used in the future for thermally imaging electronic devices or biological cells.

7 February 2006
New fiber-optic sensor systems enable non-destructive plant biotechnology monitoring.
1 February 2006
The Miniature Integrated Speckle imaging Telescope (MIST) is meeting the challenges of long-distance, high-resolution imagery by compensating for atmospheric turbulence blurring.
1 February 2006
From oemagazine April 2005
31 April 2005
From oemagazine October 2004
30 October 2004
From oemagazine October 2004
30 October 2004
From oemagazine October 2004
30 October 2004
From oemagazine October 2004
30 October 2004
From oemagazine August 2004
31 August 2004
From oemagazine July 2004
30 July 2004
From oemagazine May 2004
30 May 2004
From oemagazine April 2004
31 April 2004
From oemagazine April 2004
31 April 2004
From oemagazine March 2004
29 March 2004
From oemagazine February 2004
31 February 2004
From oemagazine September 2003
31 September 2003
From oemagazine May 2003
30 May 2003
From oemagazine September 2002
31 September 2002
From oemagazine July 2002
30 July 2002
From oemagazine April 2002
31 April 2002
From oemagazine March 2002
28 March 2002
From oemagazine August 2001
31 July 2001
From oemagazine July 2001
30 July 2001
From oemagazine April 2001
31 April 2001
From OE Reports Number 199 - July 2000
30 July 2000
From OE Reports Number 199 - July 2000
30 July 2000
From OE Reports Number 196 - April 2000
31 April 2000
From OE Reports Number 185 - May 1999
30 May 1999

From OE Reports Number 183 - March 1999

An Interview with Anthony Gleckler, Senior Systems Engineer; Arete Associates; Sherman Oaks, CA.

28 March 1999
From OE Reports Number 150 - June 1996
31 June 1996