Thick sun sensor for sun azimuth angle measurement

A technology of solar sensor and solar azimuth, which is applied to measuring devices, measuring angles, instruments, etc., can solve the problem of not being able to provide azimuth and pitch angle information, etc., to improve design flexibility, small size, and large measuring field of view. Effect

Active Publication Date: 2013-11-27
BEIJING INST OF CONTROL ENG
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] At present, the sun sensor can only give high measurement accuracy in a small field of view, and cannot realize the azimuth and elevation angle measurement information in the 2π solid angle field of view; or can only be in the 2π solid angle field of view. Provides the relative position area of ​​the sun, but not azimuth and elevation angle information

Method used

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  • Thick sun sensor for sun azimuth angle measurement
  • Thick sun sensor for sun azimuth angle measurement
  • Thick sun sensor for sun azimuth angle measurement

Examples

Experimental program
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Effect test

Embodiment 1

[0046] In the main body structure of the thick sun sensor of the present invention, the included angles between the four sides of the truncated pyramid and the plane where the annular surface 6 is located are the same, which is 45°, and battery components are installed on the four sides and the top surface. The test results show that in When the off-axis angle is within 10°, the measurement accuracy is 0.5°, and when the off-axis angle is 10°~30°, the measurement accuracy is 1.5°.

Embodiment 2

[0048] In the main body structure of the thick sun sensor of the present invention, the angles between the four sides and the plane where the annular surface 6 is located are different, wherein the angles between the two opposite sides are 60°, and the angles between the other two opposite sides The measurement accuracy is 45°, and battery components are installed on the four sides and the top surface. The test results show that when the off-axis angle is within 10°, the measurement accuracy is 1°, and when the off-axis angle is 10°~30°, the measurement accuracy is 3°.

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Abstract

The invention relates to a thick sun sensor for sun azimuth angle measurement, which comprises a main structure, a base, a battery pack, a standard mirror, an electric connector and an earthing assembly, wherein the main structure is mounted on the base; the main structure is rectangular pyramid shaped; mounting grooves are formed in both the four side surfaces and the top surface of the rectangular pyramid; the mounting grooves are used for mounting the battery pack; a ring band surface is arranged on the periphery of the four side surfaces of the rectangular pyramid; a light blocking ring is arranged on the outer side of the ring band surface; the light blocking ring adopts a thin-walled ring band structure; the height of the light blocking ring is not larger than the height the undermost position of a sensitive surface of the battery pack; the standard mirror, the electric connector and the earthing assembly are mounted on the base. The thick sun sensor has the advantages of simple structure, small size, light weight, large measurement viewing field (2 pi solid angle), stray light interference resistance and space irradiation resistance, and has a main backup measurement mode.

Description

technical field [0001] The invention relates to a coarse sun sensor used for measuring the sun azimuth angle, and belongs to the technical field of satellite attitude measurement. Background technique [0002] As the main attitude measuring instrument of the satellite control subsystem in the sun orientation mode and emergency mode at the initial stage of orbiting, the sun sensor provides the satellite with the azimuth and elevation angle information of the sun vector relative to the star coordinate system or product coordinate system. [0003] The sun sensor takes the sun as the observation object, and its main technical indicators are the measurement field of view and measurement accuracy. The large measurement field of view is conducive to the rapid acquisition and orientation of the satellite to the sun, or the rapid realization of alignment to the sun in emergency mode. The high measurement accuracy means that the satellite has a high degree of confidence in the sun po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/00
Inventor 邓楼楼贾锦忠吕政欣梁鹤何伟钟尧孙建波张韩笑洪帅程倩
Owner BEIJING INST OF CONTROL ENG
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