SRCA radiometric calibration tracking from pre-launch to on-orbit

Harry E. Montgomery; Nianzeng Che; Jeff Bowser

doi:10.1117/12.363535

24 September 1999 SRCA radiometric calibration tracking from pre-launch to on-orbit

Harry E. Montgomery, Nianzeng Che, Jeff Bowser

Proceedings Volume 3750, Earth Observing Systems IV; (1999) https://doi.org/10.1117/12.363535
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The launch-related spectral band radiance change of the Spectro-Radiometric Calibration Assembly (SRCA) of MODurate Resolution Imaging Spectrometer (MODIS) is mainly attributable to its lamp temperature variations. Comparison of the spectral profiles, measured by the SRCA at different times, provides a way of tracking change in the band radiance while the integrated SRCA radiance remains constant. Prelaunch the SRCA was calibrated against a ground Spherical Integration Source (SIS100). Meanwhile the SRCA calibrations were run in spectral and radiometric modes. Comparison of the on-orbit data from the SRCA spectral and radiometric modes to prelaunch data will transfer SIS100 ground calibration to orbit. For validation, data form TV at nominal temperature plateau will define the radiometric transfer; this transfer will be applied to SRCA data measured at other temperature plateaus and compared with the measured SIS100 radiance values.

Citation Download Citation

Harry E. Montgomery, Nianzeng Che, and Jeff Bowser "SRCA radiometric calibration tracking from pre-launch to on-orbit", Proc. SPIE 3750, Earth Observing Systems IV, (24 September 1999); https://doi.org/10.1117/12.363535

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