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

Abstract

The invention discloses a method for testing the function of a star sensor based on an electric injection star map. The method includes: performing simulation calculation on orbital parameters and attitudes of satellite motion, and simulating and generating a star map image captured by the star sensor; Point as the center, update and transmit the local map of the star map; superimpose the local update on the star map background of the star sensor, and perform star point positioning, star map recognition and calculation attitude; check the star map recognition and attitude of the star sensor Whether the result of the solution is correct. The invention also discloses a corresponding device. The star map of the invention has a high update rate, can simulate the on-orbit state of the star sensor, can perform ground simulation experiments together with the whole star system, does not depend on other external equipment, has no special requirements for the use environment, and has 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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