Radiometric Calibration of Multi-spectral Scanner of CBERS-1 Satellite
2010
Beijing Institute of Satellite Environment Engineering has been engaged in the radiometric calibration of satellite remote
sensor since 1980s. Recently, one calibration test for the multi-spectral scanner of CBERS-1 resource satellite has just
been completed. This test was performed in the KM6 calibration facility, which is the latest one designed for radiometric
calibration of satellite infrared sensor in the auxiliary chamber of KM6 environment simulator. In this test, a set of
multi-spectral sources were used, which include a solar integrating sphere whose spectrum covers the visible light and
near infrared, and a blackbody whose spectrum covers the far infrared. For performing the multi-spectral radiometric
calibration in one test, the multi-spectral optical system was used. By controlling the precision mechanism in the
vacuum cryogenic environment, the multi-spectral optical system can be switched, and the light from integrating sphere
or blackbody can be individually reflected to the scanner. This paper mainly describes some technologies of the
multi-spectral sources, the multi-spectral optical system and etc in this test.
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