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首页> 外文会议>Calibration of Passive Remote Observing Optical and Microwave Instrumentation >Large integrating sphere of prelaunch calibration system for Japanese Earth Resources Satellite optical sensors
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Large integrating sphere of prelaunch calibration system for Japanese Earth Resources Satellite optical sensors

机译：日本地球资源卫星光学传感器的发射前校准系统的大型积分球

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摘要

Abstract: This paper describes a new high-accuracy prelaunch radiometric calibration system for the optical sensor (OPS) mounted on the Japanese Earth Resources Satellite (JERS) to be launched in early 1992. The authors present a detailed description of an internally irradiated integrating sphere 1 m in diameter, which supplies radiance necessary for prelaunch calibration of the OPS in the spectral range from 500 nm to 2400 nm. The integrating sphere has an aperture of 280 mm over which uniform radiance is expected, and has twelve halogen lamps of 500 W operated at 100 V dc to give the OPS the nearly maximum spectral radiance for each spectral band from the earth surface. The integrating sphere is calibrated against transfer standards using a double-grating spectrometer. A series of calibrations of the integrating sphere has been made since December 1989. Deviation of spectral radiance over several calibrations has been kept within 3%.!
机译：摘要：本文描述了一种新型的高精度光学发射校准系统，该光学校准系统安装在将于1992年初发射的日本地球资源卫星（JERS）上，用于光学传感器（OPS）。作者对内部辐照的积分球进行了详细描述。直径为1 m，可在500 nm至2400 nm的光谱范围内提供OPS发射前校准所需的辐射。积分球的孔径为280 mm，可望在该孔径上获得均匀的辐射，并具有十二个500 W卤素灯，在100 V dc下工作，从而为OPS提供了来自地面的每个光谱带近乎最大的光谱辐射。使用双光栅光谱仪根据传输标准对积分球进行了校准。自1989年12月以来，已对积分球进行了一系列校准。多次校准的光谱辐射率偏差保持在3％之内。

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