气象卫星扫描辐射计的辐射定标

阐述了气象卫星扫描辐射计的辐射定标。包括卫星发射前的地面定标,飞行中的星上定标及星地对比定标。指出飞行中的可见光波段的定标至今还未能投入业务使用,仍处于研究阶段,而静止气象卫星的飞行中定标,无论红外或是可见光波段只能做到相对定标。为解决绝对定标问题,必须寻求星体外的客观目标作为定标源。采用这一途径,即使星上定标设备失效,也不致影响卫星数据的使用。

RADIATION CALIBRATION OF SCANNING RADIOMETER FOR METEOROLOGICAL SATELLITE

The radiation calibration of scanning radiometer for the meteo- rological satellite is stated in this paper,including the pre-launch calibra- tion,in-flight calibration and the absolute calibration through comparison between the data ground measured and the data transmitted from the satel- lite.It is commemted that the calibration for visible waveband can not yet be used for operation satellite currently and is in research stage still. The ra- diation calibration for geostationary satellite can only be relative one.There- fore we must find an objective target as a calibration source to resolve the problem of absolate calibration.In this way the data transmitted from satel- lite will be effective even if the calibration equipment on the satellite is failed.