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

A technology for star sensor and functional testing, which is used in measuring devices, testing of machine/structural components, instruments, etc. It can solve the problems of poor versatility, high price of star field simulators, and great influence of weather and other factors. The effect of strong versatility and simple test method

Inactive Publication Date: 2008-07-23
BEIHANG UNIV
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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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  • Method and apparatus for testing star sensor function based on electric injection star map
  • Method and apparatus for testing star sensor function based on electric injection star map
  • Method and apparatus for testing star sensor function based on electric injection star map

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Embodiment Construction

[0045] The basic idea of ​​the present invention is to provide a test signal source for the star sensor by means of electric injection into the star map, and evaluate the functions of each part of the electronic components of the star sensor by analyzing the processing results, so as to provide a basis for the ground function test of the star sensor A new testing method is provided.

[0046] Here, the so-called electrical injection constellation refers to a digital constellation generated by electrical signal simulation as a test signal source.

[0047] The star sensor function test device is shown in Figure 1, including a star map simulation computer 1, an information analysis and processing computer 2, a star sensor 3, and a communication cable 4, wherein the star map simulation computer 1 is connected through a communication cable 4 The star sensor 3 is connected to the information analysis and processing computer 2 through the communication cable 4 .

[0048] In practical...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01C21/02G01M99/00
Inventor 张广军魏新国刘付成江洁郑循江
Owner BEIHANG UNIV
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