Share Email Print
cover

Proceedings Paper

Range accuracy of a gated-viewing system compared to a 3D flash LADAR under different turbulence conditions
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

While a Gated-Viewing system primarily provides the intensity values of the captured laser radiation, it is also possible to determine range information in a static scenario by the sliding gates method. In this paper, we compare this method to a time-of-flight based 3-D Flash LADAR technique in terms of range accuracy under moderate and strong turbulence conditions. The first method requires several Gated-Viewing images (several laser pulses) with stepwise increased gate delay times. For a 3-D Flash LADAR system, one laser pulse is sufficient because for each pixel the range is determined by the time-of-flight method. We have combined a Gated-Viewing camera (640 × 480 pixels) as well as a 3-D Flash LADAR camera (128 × 128 pixels) with a pulsed 1.57 μm laser source. The maximal laser pulse energy was 67 mJ. We have conducted field measurements at different times of day. Two reflectance panels and a vehicle at a distance of 2 km were recorded. The plates were positioned diagonal to the line of sight with an angle of about 45 degrees in order to determine range accuracies. In addition, a laser scintillometer provided atmospheric turbulence strength along the propagation path.

Paper Details

Date Published: 9 October 2010
PDF: 12 pages
Proc. SPIE 7835, Electro-Optical Remote Sensing, Photonic Technologies, and Applications IV, 783504 (9 October 2010); doi: 10.1117/12.865097
Show Author Affiliations
Benjamin Göhler, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Peter Lutzmann, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)


Published in SPIE Proceedings Vol. 7835:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications IV
Gary W. Kamerman; Gary J. Bishop; John D. Gonglewski; Ove Steinvall; Keith L. Lewis; Richard C. Hollins; Thomas J. Merlet, Editor(s)

© SPIE. Terms of Use
Back to Top