Double-view field star sensor and method for identifying star atlas using the same

A technology of star sensor and star map recognition, which is applied to the observation of aerospace vehicles, instruments, and optical devices, etc., can solve the problems of unbalanced three-axis precision, achieve high-precision attitude measurement, and make up for the low precision of the roll axis , Identify logically clear effects

Active Publication Date: 2005-04-27
北京天银星际科技有限责任公司
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] The purpose of the present invention is to solve the unbalanced three-axis precision of existing star sensors, and overcome the shortage of simultaneous orthogonal installation and use of multiple star sensors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Double-view field star sensor and method for identifying star atlas using the same
  • Double-view field star sensor and method for identifying star atlas using the same
  • Double-view field star sensor and method for identifying star atlas using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] Ordinary star sensor imaging model such as figure 1 As shown, the star 1 is imaged on the photosensitive detector 4 through the star sensor lens system 2, and the star image point 3 is obtained on the photosensitive detector at this time. When the ordinary star sensor is in a certain attitude, the star image point and the star have one-to-one Correspondence.

[0049] 1. Dual-field-of-view implementation method and imaging principle of the dual-field-of-view star sensor

[0050] Such as figure 2 Shown, the present invention has designed a kind of dual field of view star sensor, comprises two shading hoods 5 that the central axis is perpendicular to each other, and one is installed in front of the lens system of common star sensor and becomes 45 ° half with the main optical axis of lens system Anti-semi-transparent plane mirror 6, star sensor lens system 2, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The double-view field star sensing detector and its star chart distinguishing method belongs to the field of posture sensor technology. The double-view field star sensing detector has one semi-transparent mirror in angle of 45 deg to the main optical axle installed before the lens system of common star sensing detector, and two lens hoods in the two incident light directions of the semi-transparent mirror to avoid spatial stray light interference. The light rays of the two view fields are transmitted and reflected separately in the semi-transparent mirror, passed through the same lens system and imaged in the same photosensitive detector. Compared with common single view field star sensing detector, the double-view field star sensing detector has higher precision, high chip utilization, small volume, low power consumption, easy installation and use, and other features. In addition, the corresponding star chart distinguishing method is also disclosed.

Description

technical field [0001] The invention belongs to the technical field of attitude sensors. Background technique [0002] The star sensor is a high-precision device for attitude measurement on a spacecraft. It is now widely used in the aerospace field, including space shuttles, earth satellites, or deep space probes such as the moon and Mars. [0003] In recent years, with the requirements of space missions, the requirements for satellite attitude have become higher and higher, especially for systems that require high-precision imaging, including reconnaissance, resource and astronomical observation satellites. -5 rad level, which is an accuracy level that other sensors such as sun sensors, moon sensors and magnetometers cannot achieve. Only star sensors can provide such precision. [0004] The star sensor can basically be regarded as an essential system on modern high-precision satellites, but this kind of high-precision star sensor generally has a shortcoming that the accur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B64G3/00G01B11/03G01D5/26
Inventor 尤政邢飞董瑛
Owner 北京天银星际科技有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap