Star sensor

A star sensor and detector technology, applied in the direction of instruments, installation, optics, etc., can solve problems such as difficult processing and adjustment, affecting accuracy, complexity, etc., to reduce the difficulty of system processing and assembly, ensure the level of accuracy, small size and effect of weight

Active Publication Date: 2011-07-06
BEIJING INST OF CONTROL ENG
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  • Abstract
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Problems solved by technology

A common problem with the structure of this type of star sensor is: 1. Too many aspheric surfaces are used or are too complicated, which is not easy to process and adjust; 2. The lens is used as the main body of the structure, the mounting surface is on the lens structure, and the circuit box is attached to the lens First, in order to ensure the mechanical conditions, the design must be streng

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[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] like figure 1 As shown, a bearing plate 2 is provided between the lens 1 and the circuit box 3, and a circular hole is opened in the middle of the bearing plate 2; the circuit box 3 is provided with a detector circuit board 5 and a data processing circuit board (ie figure 1 (other circuit boards except the detector circuit board 5 in the middle circuit box 3), the detector circuit board 5 is connected to the focal plane structure 6 at the rear of the lens 1, and the detector circuit board 5 on the lens 1 passes through the bearing plate The round hole on 2 is installed in the circuit box 3, but does not have any contact with the circuit box 3, so as to ensure the stability of the relative focusing position of the detector and the lens 1.

[0018] The structure of the lens 1 is designed according to the structure of the optical s...

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Abstract

The invention belongs to deep-space navigation sensor design field, and specifically discloses a star sensor. By a bearing plate arranged between a lens and a circuit box, adetection circuit board is connected with the afterbody of the lens and is fixed in the circuit box after passing through the bearing plate, so that the structure can play a role in protecting the lens. Because of the perforated structure, the bearing plate has a lighter weight. The detector assembly is directly installed on the lens focal plane structure, thereby assuring the focusing precision not to be influenced by the deformation of the bearing plate and the circuit box and assuring the sensor precision level.

Description

technical field [0001] The invention belongs to the field of deep space navigation sensor design, and in particular relates to an autonomous navigation star sensor. Background technique [0002] In the field of aerospace technology, the star sensor is a kind of optical sensor that determines the attitude of the spacecraft by measuring the angular position of the star in the inertial space by imaging. Stellar sensors are generally composed of optical systems, structures, detector electronic circuits, data processor electronic circuits, stray light elimination components, external interfaces, star map recognition and attitude processing software, etc. Among them, the structural system is the support of the star sensor, and its structure determines the mechanical properties and volume weight of the sensor. [0003] The imaging structure of the general optical system is transmissive, which is composed of multiple lens parts assembled together, such as the SED series star sensor...

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Application Information

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IPC IPC(8): G01C21/02G01C21/24G02B7/02G02B27/00G02B13/18
Inventor 郝云彩王大轶余建军王立
Owner BEIJING INST OF CONTROL ENG
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