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Spherical stray light suppression system around star sensor with adjustable aperture size

A star sensor and opening size technology, which is applied in the field of spherical stray light suppression system around the star sensor, can solve the problem of stray light pollution in the test background area, and achieve the effect of high integration, high extinction rate, and suppression of background stray light

Active Publication Date: 2021-09-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing technology cannot solve the problem of stray light pollution in the test background area caused by the light beam emitted by the light source irradiating the surface of the star sensor, and provides a spherical stray light suppression system around the star sensor with adjustable opening size

Method used

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  • Spherical stray light suppression system around star sensor with adjustable aperture size

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specific Embodiment approach 1

[0013] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the spherical stray light suppression system around the star sensor with adjustable opening size described in this embodiment, which includes a spherical stray light suppression structure 1, an electric variable diaphragm 2, a ring type electronically controlled rotating base 3, Two-dimensional electronically controlled rotating platform 4 and optical testing platform 6;

[0014] The light beam emitted by the light source directly hits the entrance of the star sensor hood 5, the star sensor hood 5 is fixed above the two-dimensional electronically controlled rotating platform 4, and the star sensor shading 5 is rotated by the two-dimensional electronically controlled rotating platform 4, The two-dimensional electronically controlled rotating platform 4 is installed above the optical test platform 6, and the spherical stray light suppression structure 1 is fixed on the top of th...

specific Embodiment approach 2

[0019] Embodiment 2: In this embodiment, Embodiment 1 is further described. The opening of the spherical stray light suppression structure 1 is circular with a diameter of 1000 mm.

specific Embodiment approach 3

[0020] Embodiment 3: In this embodiment, Embodiment 1 is further described. The bottom surface of the spherical stray light suppression structure 1 is an annular surface, and the inner diameter of the annular surface is 2100 mm.

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Abstract

The spherical stray light suppression system around the star sensor with adjustable opening size belongs to the field of stray light suppression technology, in order to solve the problem that the existing technology cannot solve the problem of stray light pollution in the test background area caused by the light beam emitted by the light source irradiating the surface of the star sensor. Including spherical stray light suppression structure, electric iris, circular electric control rotating base, two-dimensional electric control rotating platform and optical test platform; The rotation is driven by a two-dimensional electronically controlled rotating platform, which is installed above the optical test platform. The spherical stray light suppression structure is driven by a circular electronically controlled rotating base. The star sensor hood and the spherical stray light suppression structure synchronous rotation; the electric iris is installed at the opening of the spherical stray light suppression structure, and the size of the opening of the spherical stray light suppression structure is changed by adjusting the size of the opening of the electric iris. The invention is used for the ground verification experiment in the satellite sensitive period.

Description

technical field [0001] The invention relates to a spherical stray light suppression system around a star sensor, belonging to the technical field of stray light suppression. Background technique [0002] With the development of the aerospace industry, the application of star sensors in determining the attitude of spacecraft has attracted widespread attention from all over the world. The star sensor works in a harsh environment with strong radiation sources (such as the sun, the moon, and the earth) outside the field of view. It is mainly used for imaging weak and small moving objects in space. The background stray light seriously affects the attitude measurement accuracy of the star sensor. [0003] During the ground test and verification experiment of the star sensor, the light beam emitted by the light source is irradiated on the star sensor hood, the outer wall of the star sensor hood, and other structural surfaces around the star sensor (such as the surface of the two-di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02G01C25/00
CPCG01C21/02G01C25/00
Inventor 汪洪源王秉文武少冲颜志强康文刘祥魏政
Owner HARBIN INST OF TECH