Global celestial sphere rapid star map identification method for star sensor

A star map recognition, star sensor technology, applied in character and pattern recognition, instrument, astronomical navigation and other directions, can solve the problems of large capacity of navigation feature library, long recognition time, low recognition rate, etc., to achieve good robustness, The effect of high recognition success rate and reduced storage space requirements

Active Publication Date: 2018-03-20
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple to calculate, but the required navigation feature library has a large capacity, and there are

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
  • Global celestial sphere rapid star map identification method for star sensor
  • Global celestial sphere rapid star map identification method for star sensor
  • Global celestial sphere rapid star map identification method for star sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention more clear, the specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to help the understanding of the present invention, and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0024] The present invention provides a star sensor all-celestial rapid star map recognition method, which mainly includes two parts: building a navigation feature library and a star map recognition and matching method, see the star map recognition method flow figure 1 shown, including the following steps:

[0025] Step 1. Const...

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 discloses a global celestial sphere rapid star map identification method for a star sensor, comprising the following four steps: constructing a navigation feature library of shape factors and angular distance values of a navigation triangle; optimally selecting four observing stars according to the quantity of the observing stars in a field of view of the star sensor to form two target observing triangles; calculating the shape factors and angular distance values of the two target observing triangles and matching with the navigation feature library to obtain a subsequent to-be-matched navigation triangle; and according to the to-be-matched navigation triangle information, generating a reference star map of a local sky region, and matching the reference star map with the currently observed star map. The method disclosed by the invention can reduce the requirement for the storage space of the navigation feature library, and can quickly find a unique navigation triangle according to the features of the observing triangles, and thus solving difficulty of more redundant navigation triangles in matching of a conventional triangle method and having the advantages of being short in time, high in identification success rate and good in robustness.

Description

technical field [0001] The invention belongs to the technical field of attitude sensor measurement, and relates to a method for fast all-celestial star map recognition of a star sensor. Background technique [0002] At present, there are many kinds of attitude sensors, and the performance of the star sensor is the most prominent. It has the advantages of low power consumption, light weight, strong autonomy, good dynamic performance, and high precision. It has been widely used in satellites, missiles and other space technology fields. The star map recognition technology of the sensor is a key technology to complete the attitude measurement task of the spacecraft, which directly affects the ability of the star sensor to navigate autonomously throughout the day. [0003] The star sensor is a high-precision space attitude measurement device with the equatorial inertial system as the reference system and the stars as the source of navigation information. By taking images of stars...

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
IPC IPC(8): G01C21/02G06K9/00
CPCG01C21/02G06V30/422
Inventor 陆壮志周鑫万志江王安迪王伟
Owner THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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