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Radiometric Calibration of Multi-spectral Scanner of CBERS-1 Satellite

机译:CBERS-1卫星多光谱扫描仪的辐射定标

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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.
机译:自1980年代以来,北京卫星环境工程研究所一直从事卫星遥感器的辐射定标。最近,一项针对CBERS-1资源卫星的多光谱扫描仪的校准测试刚刚完成。该测试是在KM6校准设备中进行的,该设备是针对KM6环境模拟器辅助室内的卫星红外传感器进行辐射校准而设计的最新设备。在此测试中,使用了一组多光谱源,其中包括一个太阳积分球,其光谱覆盖可见光和近红外光,以及一个黑体,其光谱覆盖远红外。为了在一项测试中执行多光谱辐射校准,使用了多光谱光学系统。通过控制真空低温环境中的精密机构,可以切换多光谱光学系统,并且来自积分球或黑体的光可以单独反射到扫描仪。本文主要介绍了该测试中的多光谱源,多光谱光学系统等技术。

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