On-orbit spatial characterizations for Terra MODIS

Xiaoxiong Xiong; Nianzeng Che; Farida Adimi; William L. Barnes

doi:10.1117/12.451974

24 September 2002 On-orbit spatial characterizations for Terra MODIS

Xiaoxiong Xiong, Nianzeng Che, Farida Adimi, William L. Barnes

Proceedings Volume 4814, Earth Observing Systems VII; (2002) https://doi.org/10.1117/12.451974
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

MODerate Resolution Imaging Spectroradiometer (MODIS) Proto-Flight Model (PFM) on-orbit spatial characterization includes Band to Band registration (BBR) and the Modulation Transfer Function (MTF) of 36 bands located on four focal plane assemblies (VIS, NIR, SMWIR, and LWIR). These parameters were also measured prelaunch using ground calibration equipment. The on-board Spectro-Radiometric Calibration Assembly (SRCA) was used both prelaunch and on-orbit to monitor the BBR and MTF changes. In this paper, we report the MODIS on-orbit spatial characterization results derived from the SRCA and their comparisons with pre-launch values. Results from SRCA measurements show that the BBR stabilized on-orbit after about 100 days. Currently, the averaged FPA positions in the along-scan direction, relative to band 1 (NIR), have changed from prelaunch values by -2m for VIS, 17m for SMWIR, and -20m for LWIR; along-track changes are 43m for VIS, -36m for SMWIR, and -22m for LWIR. The MTF in the along-scan direction shows a small improvement over prelaunch. Also in this paper, we discuss a methodology that uses the sensor's on-orbit views of the Moon for the BBR characterization. Comparison of the results from the Moon and those from the SRCA provides an evaluation of the methodology and its applicability for other remote sensing instruments without an on-board spatial characterization calibrator.

Citation Download Citation

Xiaoxiong Xiong, Nianzeng Che, Farida Adimi, and William L. Barnes "On-orbit spatial characterizations for Terra MODIS", Proc. SPIE 4814, Earth Observing Systems VII, (24 September 2002); https://doi.org/10.1117/12.451974

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available