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Proceedings Paper

Comparison of MODIS and PLEIADES Lunar observations
Author(s): Xiaoxiong Xiong; Sophie Lachérade; Laurent Lebègue; Bertrand Fougnie; Amit Angal; Zhipeng Wang; Ouahid Aznay
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Paper Abstract

MODIS is the key instrument for the NASA’s EOS Terra and Aqua missions, launched in late 1999 and early 2002, respectively. MODIS has 20 reflective solar bands (RSB) and 16 thermal emissive bands (TEB). MODIS RSB are calibrated on-orbit using an on-board solar diffuser and regularly scheduled lunar observations. For each instrument, the scheduled lunar observations are made through its space view (SV) port at nearly identical lunar phase angles via spacecraft roll maneuvers. Occasionally, unscheduled lunar observations at different phase angles are also collected by both Terra and Aqua MODIS. The PLEIADES system is composed of two satellites, PLEIADES-1A launched at the end of 2011 and PLEIADES-1B a year later. The PLEIADES has 5 reflective solar bands or channels (blue, green, red, nearinfrared, and panchromatic) that are calibrated on-orbit using observations of Pseudo Invariant Calibration Sites (PICS). Since launch, more than 1000 lunar images covering the phase angle range of ±115° have been acquired by PLEIADES- 1B for its on-orbit calibration and sensitivity study of lunar calibration methods. This paper provides an overview of MODIS and PLEIADES lunar observations and an assessment of their calibration difference based on lunar observations made over a range of phase angles. Also discussed in this paper are strategies and future effort that could potentially benefit other earth observing sensors and improve the calibration accuracy and consistency of existing lunar model(s).

Paper Details

Date Published: 11 November 2014
PDF: 11 pages
Proc. SPIE 9241, Sensors, Systems, and Next-Generation Satellites XVIII, 924111 (11 November 2014); doi: 10.1117/12.2067442
Show Author Affiliations
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)
Sophie Lachérade, Ctr. National d'Études Spatiales (France)
Laurent Lebègue, Ctr. National d'Études Spatiales (France)
Bertrand Fougnie, Ctr. National d'Études Spatiales (France)
Amit Angal, Science Systems and Applications, Inc. (United States)
Zhipeng Wang, Sigma Space Corp. (United States)
Ouahid Aznay, CS Systèmes d'information (France)

Published in SPIE Proceedings Vol. 9241:
Sensors, Systems, and Next-Generation Satellites XVIII
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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