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Proceedings Paper

Using CEOS reference standard targets to assess on-orbit performance of Resourcesat-2 AWiFS in comparison with Terra MODIS-preliminary results
Author(s): A. Angal; A. Senthil Kumar; X. Xiong; A. S. Kiran Kumar; V. K. Dadhwal; T. Choi
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Paper Abstract

The Resourcesat-2 (RS2), launched on April 20, 2011 is a follow-on mission to the successfully operational Resourcesat-1 (RS1). Similar to the RS1, RS2 carries 3 multispectral imagers in its platform: the Advanced Wide- Field Sensor (AWiFS), the Linear Imaging Self-Scanner (LISS 3) and the high-resolution multi-spectral scanner LISS-4. This study focuses on assessment of the radiometric calibration stability of RS2 AWiFS sensor by comparing near-simultaneous measurements of Terra MODIS acquired over CEOS reference standard targets. The AWiFS sensor operates four distinct spectral bands: B2 (0.52-0.59 μm), B3 (0.63-0.69 μm), B4 (0.77-0.86 μm) and B5 (1.55-1.7 μm) with a spatial resolution of 56 m. Only those bands of the Terra MODIS spectrally matching to AWiFS bands are compared after basic corrections for variations due to the sun and satellite angles with reference to scene center and the atmospheric transmittance on the given day of acquisition. Synchronous acquisitions of these sensors over the desert regions in Libya, Algeria and Egypt at CEOS recommended geographic coordinates were acquired and processed to compare the top-of-atmosphere (TOA) reflectance from both sensors. Preliminary results and future efforts are also discussed in this paper.

Paper Details

Date Published: 9 November 2012
PDF: 10 pages
Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 85280K (9 November 2012);
Show Author Affiliations
A. Angal, Science Systems and Applications, Inc. (United States)
A. Senthil Kumar, National Remote Sensing Ctr. (India)
X. Xiong, NASA Goddard Space Flight Ctr. (United States)
A. S. Kiran Kumar, Space Applications Ctr. (India)
V. K. Dadhwal, Indian Institute of Remote Sensing (India)
T. Choi, Sigma Space Corp. (United States)

Published in SPIE Proceedings Vol. 8528:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization II
Haruhisa Shimoda; Xiaoxiong Xiong; Changyong Cao; Xingfa Gu; Choen Kim; A. S. Kiran Kumar, Editor(s)

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