空间相机星上辐射定标技术的研究

Research on Spaceborne Radiant Calibration Technology of Space Camera

空间相机在轨运行之后,由于环境的变化和时间的推移,空间相机的响应性能必然会发生衰减。为了提高卫星下传数据的辐射反演精度,必须对它的星上响应性能进行实时跟踪和监测。为此,必须对空间相机进行星上辐射定标。本文对空间相机的星上辐射定标技术进行了介绍,另外还介绍了国内外最新的推扫式空间相机和它们采用的星上辐射定标技术。

When flying on orbit, with the change of environment and time, the response capability of a space camera must be attenuated. So it is necessary for a space camera to have a spaceborne radiant calibration. This can not only improve the precision of data but also follow and inspect the response capability of the space camera. In this paper, the spaceborne radiant calibration technologies of space cameras, especially of the newest pushbroom space cameras are presented.