Whole-satellite star sensor testing system and method based on optical signal

Abstract

The invention discloses a whole-satellite star sensor testing system and method based on an optical signal. The data transmission the optical signal is realized by installing a dynamic satellite modeat a star sensor optical probe part when performing the whole-satellite testing, thereby accomplishing open-circuit testing and close-circuit testing of the star sensor by cooperating with a ground testing system. Through the method disclosed by the invention, a channel to a control computer from the star sensor optical probe can be completely checked without skipping any part, the high-precisionwhole-satellite control subsystem close-circuit testing regarding the star sensor as the input can be realized through the cooperation a data management uplink instruction injection command and a dynamics instruction, thereby precisely contrasting the input and output of the star sensor; an operation condition the star sensor in the satellite-sensitive control mode can be examined so as to solve aproblem that the dynamic response of a transmission channel, to the control computer from the optical probe, of the star sensor cannot be comprehensively verified in the previous whole-satellite testing.

Description

technical field [0001] The invention belongs to the field of spacecraft full-star comprehensive testing, and relates to a method for completing the open-circuit test and closed-circuit test of the full-star star sensor by using a dynamic star model, which is mainly used in the test of the full-star control subsystem. Background technique [0002] The star sensor measures the three-axis attitude of the satellite relative to the inertial coordinate system by sensitive stellar radiation based on the principle of two-vector attitude determination. It is an important part of the satellite attitude control system. It provides satellite attitude data for the system and can correct the gyroscope. drift. A star sensor generally includes a star sensor circuit box and a star sensor optical probe. [0003] In the past, the test of the star sensor in the control subsystem of the entire star, or by simulating the electrical signal of the star sensor circuit box, the corresponding star se...

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Problems solved by technology

[0005] The purpose of the present invention is to: provide a whole-star star sensor testing system and method based on optical signals, through the open circuit test and closed circuit test, can accurately compare the input and output of the star sensor, and View the operation of the star sensor in the star sensitive control mode, which solves the problem that the dynamic response of the star sensor from the optical probe to the control computer transmission path cannot be fully verified in the previous whole star test

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