Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sun positioning satellite star sensor mounting orientation acquiring method and system

An acquisition method and satellite star technology, applied in the direction of integrated navigator, etc., can solve the problems of star sensor failure, lower imaging quality and signal-to-noise ratio, difficulty in giving the relationship between star sensor pointing and stray light suppression angle, etc.

Inactive Publication Date: 2018-10-19
TSINGHUA UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and system for obtaining the installation and pointing of the sun-oriented satellite star sensor to overcome the above-mentioned problems or at least partially solve the above-mentioned problems. The relationship between the stray light suppression angle can only be determined by continuously adjusting the installation angle of the star sensor and the working conditions to determine the proper installation angle of the star sensor, resulting in problems such as reduced image quality and signal-to-noise ratio, and failure of the star sensor

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
  • Sun positioning satellite star sensor mounting orientation acquiring method and system
  • Sun positioning satellite star sensor mounting orientation acquiring method and system
  • Sun positioning satellite star sensor mounting orientation acquiring method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] Such as figure 1 As shown, the figure shows a method for installing and pointing to the sun-oriented satellite star sensor, including:

[0042] According to the geocentric-satellite vector of the orbiting satellite to be installed, the boundary curve in the satellite body coordinate system and the semi-cone angle of the earth, atmosphere and light are obtained to obtain the boundary curve of the earth, atmosphere and light;

[0043] The area free from stray light interference surrounded by the Earth-air-optical boundary curve is used as the installation pointing area of ​​the orbiting satellite star sensor to be installed.

[0044] In this embodiment, in order to ...

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 invention provides a sun positioning satellite star sensor mounting orientation acquiring method and system. The method comprises the following steps: acquiring a geogas light boundary curve according to a boundary curve and a geogas light half corn angle of an earth core-satellite vector of an orbit satellite to be mounted in a satellite body coordinate system, and taking a stray light interference free area surrounded by the geogas light boundary curve as a mounting orientation area of an orbit satellite star sensor to be mounted. By analyzing distribution of a 'satellite-earth core / sun'vector in the satellite body coordinate system in an in-orbit operation process of a satellite, an analysis model of a spatial stray light boundary curve in a satellite sun positioning mode is established, then star sensor mounting orientation and stray light inhibition angles can be confirmed, and mounting orientation of a sun-synchronous orbit satellite star sensor with the sun positioning modeis instructed.

Description

technical field [0001] The present invention relates to the field of spacecraft attitude measurement, and more specifically, to a method and system for obtaining the installation and pointing of a sun-orientation satellite star sensor. Background technique [0002] In order to obtain sufficient energy, the solar panels should point to the sun during the orbital operation of the satellite, but for some micro-nano satellites, the solar panels are fixed on the satellite and cannot rotate relative to the satellite. In this mode, the plane where the solar panel is located needs to point to the sun for rotation. Therefore, this type of satellite generally has two working modes: Earth observation mode and sun orientation mode. When the solar panel of the satellite is perpendicular to the X-axis, the X-axis of the satellite body coordinate system should always point to the sun in the sun-oriented mode. [0003] As a high-precision, high-reliability attitude-sensitive measurement d...

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): G01C21/24
CPCG01C21/24
Inventor 邢飞王赓尤政
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com