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An Overview of Lunar Calibration and Characterization for the EOS Terra and Aqua MODISThe Moon can be used as a stable source for Earth-observing sensors on-orbit radiometric and spatial stability monitoring in the VIS and NIR spectral regions. It can also serve as a calibration transfer vehicle among multiple sensors. Nearly identical copies of the Moderate Resolution Imaging Spectroradiometer (MODE) have been operating on-board the NASA's Earth Observing System (EOS) Terra and Aqua satellites since their launches in December 1999 and May 2002, respectively. Terra and Aqua MODIS each make observations in 36 spectral bands covering the spectral range from 0.41 to 14.5 microns and are calibrated on-orbit by a set of on-board calibrations (OBCs) including: 1) a solar diffuser (SD), 2) a solar diffuser stability monitor (SDSM), 3) a blackbody (BB), and 4) a spectro-radiometric calibration assembly (SRCA). In addition to fully utilizing the OBCs, the Moon has been used extensively by both Terra and Aqua MODIS to support their on-orbit calibration and characterization. A 4 This paper provides an overview of applications of lunar calibration and characterization from the MODIS perspective, including monitoring radiometric calibration stability for the reflective solar bands (RSBs), tracking changes of the sensors response versus scan-angle (RVS), examining the sensors spatial performance , and characterizing optical leaks and electronic crosstalk among different spectral bands and detectors. On-orbit calibration consistency between the two MODIS instruments is also addressed. Based on the existing on-orbit time series of the Terra and Aqua MODIS lunar observations, the radiometric difference between the two sensors is less than +/-1% for the RSBs. This method provides a powerful means of performing calibration comparisons among Earth-observing sensors and assures consistent data and science products for the long-term studies of climate and environmental changes.
Document ID
20040171184
Document Type
Conference Paper
Authors
Xiong, X.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Salomonson, V. V.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sun, J.
(Science Systems and Applications, Inc. Lanham, MD, United States)
Chiang, K.
(Science Systems and Applications, Inc. Lanham, MD, United States)
Xiong, S.
(Science Systems and Applications, Inc. Lanham, MD, United States)
Humphries, S.
(Science Systems and Applications, Inc. Lanham, MD, United States)
Barnes, W.
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Guenther, B.
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Lunar And Planetary Science And Exploration
Meeting Information
Meeting: CALCON (Conference on Characterization and Radiometric Calibration for Remote Sensing)
Location: Logan, UT
Country: United States
Start Date: August 23, 2004
End Date: August 26, 2004
Distribution Limits
Public
Copyright
Other

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