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sensitivity study for sensor optical and electric crosstalk based on spectral measurements: an application to developmental sensors using heritage sensors such as modisThe process of developing new sensors for space flight frequently builds upon the designs and experience of existing heritage space flight sensors. Frequently in the development and testing of new sensors, problems are encountered that pose the risk of serious impact on successful retrieval of geophysical products. This paper describes an approach to assess the importance of optical and electronic cross-talk on retrieval of geophysical products using new MODIS-like sensors through the use of MODIS data sets. These approaches may be extended to any sensor characteristic and any sensor where that characteristic may impact the Level 1 products so long as validated geophysical products are being developed from the heritage sensor. In this study, a set of electronic and/or optical cross-talk coefficients are postulated. These coefficients are sender-receiver influence coefficients and represent a sensor signal contamination on any detector on a focal plane when another band's detectors on that focal plane are stimulated with a monochromatic light. The approach involves using the postulated cross-talk coefficients on an actual set of MODIS data granules. The original MODIS data granules and the cross-talk impacted granules are used with validated geophysical algorithms to create the derived products. Comparison of the products produced with the original and cross-talk impacted granules indicates potential problems, if any, with the characteristics of the developmental sensor that are being studied.
Document ID
20070030225
Document Type
Conference Paper
Authors
Butler, James J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Oudrari, Hassan
(Science Systems and Applications, Inc. Greenbelt, MD, United States)
Xiong, Sanxiong
(Science Systems and Applications, Inc. Greenbelt, MD, United States)
Che, Nianzeng
(Science Systems and Applications, Inc. Greenbelt, MD, United States)
Xiong, Xiaoxiong
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
July 23, 2007
Subject Category
Instrumentation and Photography
Meeting Information
International Geoscience and Remote Sensing Symposium (IGARSS) 2007(Barcelona)
Funding Number(s)
CONTRACT_GRANT: NAS5-02041
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.