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

A method and system for fast all-sky star image recognition robust to noise

A star map recognition, noise robust technology, applied in the field of star map recognition, can solve the problem that the recognition rate performance is sensitive to noise, and achieve the effect of improving the star map recognition rate, improving the utilization rate of star map information, and reducing the selection error rate.

Active Publication Date: 2022-08-02
NAT UNIV OF DEFENSE TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a fast all-sky star map recognition method that is robust to noise, aiming to solve the technical problem that the recognition rate performance of existing similar methods is sensitive to noise

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
  • A method and system for fast all-sky star image recognition robust to noise
  • A method and system for fast all-sky star image recognition robust to noise
  • A method and system for fast all-sky star image recognition robust to noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] It should be noted that all scalar and vector names in the embodiments of the present invention, such as the "comprehensive similarity" value, are set for the convenience of description, and some variables in the embodiments of the present invention cannot be understood as indications or implying its design tendencies. For clarity, the physical meanings of the symbols used in this specification are shown in Table 1 below.

[0057] Table 1 Symbols used in the present in...

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 method and system for fast all-sky-domain star map recognition robust to noise. The star map recognition method comprises the following steps: S1, selecting a main star to be recognized in the star map; S2, constructing a candidate set of nearby stars; S3, obtain the preprocessed star map; S4, obtain the distance mask pattern of the preprocessed star map; S5, calculate the initial similarity, and filter out candidate templates for matching; S6, calculate the comprehensive similarity of the candidate templates; S7, output final recognition result. Performing star map identification according to the method of the present invention can alleviate the problem of transforming a large number of star points in the field of view to outside the field of view after decentralization in the traditional method, and increase the number of available stars; The problem of subsequent matching errors; at the same time, the robustness is very high in the presence of noise such as lack of stars or pseudo-stars. In addition, the present invention adopts non-iterative verification and does not need to introduce additional star point identification for confirmation, so it is more rapid and effective.

Description

technical field [0001] The invention belongs to the technical field of star map recognition, and in particular relates to a fast all-sky-domain star map recognition method robust to noise. Background technique [0002] The star sensor is the core component of the spacecraft's autonomous navigation. It realizes high-precision attitude measurement by observing the stars in space. For astronomical navigation, stars can be regarded as ideal point light sources located at infinity, approximately stationary, and with certain spectral characteristics. If no previous attitude information is available, or if it is restarted after a failure, the star sensor will operate in "acquisition mode" for all-sky map recognition. In capture mode, the star sensor first identifies the stars captured in the image and then calculates the attitude based on the position measurements of the identified stars (stored in the star catalog). At present, the task of calculating attitude can be easily done...

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 Patents(China)
IPC IPC(8): G01C21/02G06V10/44G06V10/74G06K9/62
CPCG01C21/02G06V10/44G06F18/22
Inventor 袁浩李东旭吴军
Owner NAT UNIV OF DEFENSE TECH
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