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Journal of Applied Remote Sensing

Status of earth observing system Terra and Aqua moderate-resolution imaging spectroradiometer level 1B algorithm
Author(s): Gary N. Toller; Xiaoxiong Xiong; Kwo-Fu Chiang; James Kuyper; Junqiang Sun; Liqin Tan; William L. Barnes
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Paper Abstract

The first MODerate-resolution Imaging Spectroradiometer (MODIS) was launched on the Terra spacecraft on December 18, 1999. The second MODIS was launched on the Aqua spacecraft on May 4, 2002. As an integral part of NASA's Earth Observing System (EOS), these instruments provide daily observations of nearly the whole Earth with the goal of enhancing scientific characterization of land, ocean, atmosphere, climate change, and natural hazards. MODIS uses a scanning mirror, 490 detectors distributed among 36 spectral bands, and on-board calibrators (a solar diffuser, solar diffuser stability monitor, a blackbody, and a spectro-radiometric calibration assembly) to meet these objectives. The MODIS Level 1B (L1B) algorithms, written in C, input uncalibrated, geo-located observations, convert the instrument response into calibrated data, and generate science data sets. This calibration is performed on a pixel-by-pixel basis for each detector. The instrument characterization needed to run the L1B code is implemented using 96 Terra and 99 Aqua Look-up Tables. This paper describes the current L1B algorithm and discusses the changes made as a consequence of on-orbit analyses and operational considerations.

Paper Details

Date Published: 1 February 2008
PDF: 19 pages
J. Appl. Remote Sens. 2(1) 023505 doi: 10.1117/1.2839442
Published in: Journal of Applied Remote Sensing Volume 2, Issue 1
Show Author Affiliations
Gary N. Toller, Science Applications International Corp. (United States)
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)
Kwo-Fu Chiang, Science Systems and Applications, Inc. (United States)
James Kuyper, Science Applications International Corp. (United States)
Junqiang Sun, Science Systems and Applications, Inc. (United States)
Liqin Tan, Science Applications International Corp. (United States)
William L. Barnes, NASA Goddard Space Flight Ctr. (United States)


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