Polarity Test Method of Star Sensor Installation Based on Optical Star Simulator

Aiming at the problem that the polarity of star sensors installation cannot be directly tested at present,the polarity test method of star sensor installation based on star simulator is proposed.The principle of this test method is explained from two aspects of physics and mathematics,and the operation and criterion of the test method are designed.The concept of testability is proposed,and the validity of this method is proved by the testability analysis of the star sensor polarity and the star sensor installation polarity.The test results of star sensor in loop on satellite show that the method is easy to operate with the intuitive effect,and can be widely used.

This article proposes a star sensor installation polarity testing method based on a light star simulator. Without adding new testing equipment, full path polarity testing can be performed on attitude determination including star sensor polarity and star sensor installation polarity. If there is an error in the polarity of the star sensor or any link in the polarity testing of the star sensor installation, it can further accurately determine the coordinate axis of the polarity error.
The star sensor polarity testing method used has good operability, clear physical meaning of relevant criteria, and intuitive criteria. It can be applied to various spacecraft based on star sensor attitude determination, and has good engineering application value.