Method and apparatus for testing star sensor function based on electric injection star map

Abstract

The invention discloses a star sensor function test method based on electric injection star map, which comprises simulating the track parameter and attitude of satellite motion and simulating a star map shot by a star sensor, using the star point center to refresh and transmit part of the star map, laminating the part refreshes in the star map background of the star sensor, positioning star point, recognizing star map and calculating altitude, checking the results of the star map recognition and altitude calculation of the star sensor. The invention discloses a relative device. The invention has high refresh rate of star map, which can simulate the track altitude of star sensor and can process ground simulation test with whole star system, without additional external devices and special application condition demand, but with strong versatility.

Description

technical field [0001] The invention relates to a star sensor test technology, in particular to a star sensor function test method and device based on an electric injection star map. Background technique [0002] The star sensor is an aerospace measurement instrument that uses star observation to provide high-precision attitude information for space vehicles. Its working principle is: the front-end camera unit of the star sensor uses a charge coupled device (CCD, Charge Coupled Device) The semiconductor (CMOS, Complementary MetalOxide Semiconductor) image sensor captures the star map image, and through the image processing program, the barycenter coordinates and brightness information of the star image point are obtained, and then the star map recognition program uses the obtained information to find the corresponding star in the navigation star library , and finally calculate the three-axis attitude of the star sensor. [0003] Generally, before the star sensor is put into...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the star field simulator is expensive, and the star field simulator must match the star sensor, and the versatility is not strong

Another commonly used ground function test method is the field star observation test, which is to test under the actual starry sky outdoors. Although this method does not need to simulate the starry sky, it is relatively simple and easy, but it is greatly affected by factors such as weather and cannot Guarantee the demand for testing at any time, and it is impossible to simulate the on-orbit status of the star sensor

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