Radiometric Calibration and Spectral Inversion of Multi-Spectral Star Sensors
In order to achieve the measurement of unknown space optical environments for star sensors,the design of a wide and multi-spectral filter device integrated into the star sensor is proposed in this paper.The star point information and the spectral information of the space optical environment can be covered by the collected star images.On the basis of this process,experiments scheme of spectral response and radiation calibration and algorithm of brightness distribution inversion of the optical environment are conducted.The experimental results show that the inverted brightness of the optical environment is in good agreement with the measured values.The space optical environment for star sensor applications in real time can be estimated by applying this method conveniently based on a single star image.It can be served as a basis and reference for design optimization of subsequent star sensors and selection of observation windows.
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