On-orbit radiometric calibration over time and between spacecraft using the moon

Edited by: Fujisada H.Lurie J.B.Aten M.L.Weber K.



The Robotic Lunar Observatory (ROLO) project has developed a spectral irradiance model of the Moon that accounts for variations with lunar phase through the bright half of a month, lunar librations, and the location of an Earth-orbiting spacecraft. The methodology of comparing spacecraft observations of the Moon with this model has been developed to a set of standardized procedures so that comparisons can be readily made. In the cases where observations extend over several years (e.g., SeaWiFS), instrument response degradation has been determined with precision of about 0.1% per year. Because of the strong dependence of lunar irradiance on geometric angles, observations by two spacecraft cannot be directly compared unless acquired at the same time and location. Rather, the lunar irradiance based on each spacecraft instrument calibration can be compared with the lunar irradiance model. Even single observations by an instrument allow inter-comparison of its radiometric scale with other instruments participating in the lunar calibration program. Observations by SeaWiFS, ALI, Hyperion and MTI are compared here.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title On-orbit radiometric calibration over time and between spacecraft using the moon
DOI 10.1117/12.462611
Volume 4881
Year Published 2002
Language English
Larger Work Title Proceedings of SPIE - The International Society for Optical Engineering
First page 287
Last page 298
Conference Title Sensors, Systems, and Next-Generation Satellites VI
Conference Location Agia Pelagia, Crete
Conference Date 23 September 2002 through 26 September 2002