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

A method for judging morning and evening line of target celestial image for autonomous navigation of deep space exploration

A target celestial body, autonomous navigation technology, applied in astronomical navigation, image analysis, image data processing, etc., to achieve high robustness, high refresh rate, and improve positioning accuracy

Active Publication Date: 2015-08-19
BEIJING INST OF CONTROL ENG
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the technology of the present invention is: to overcome the deficiencies of the prior art, to provide a method for judging the morning and evening line of the target celestial body image for autonomous navigation in deep space exploration, and to solve the problem of high-precision measurement of the center vector of the target celestial body in deep space exploration

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 for judging morning and evening line of target celestial image for autonomous navigation of deep space exploration
  • A method for judging morning and evening line of target celestial image for autonomous navigation of deep space exploration
  • A method for judging morning and evening line of target celestial image for autonomous navigation of deep space exploration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 Shown is the input target celestial body image, because of the target celestial body image caused by the sun irradiation and the sensor shooting position (a, b both have the morning and evening line c does not exist the morning and evening line), the target celestial image with the morning and evening line obviously cannot be directly obtained by its 360 The edge points of ° fit the center position.

[0024] Such as image 3 Shown, the specific implementation steps of the present invention are as follows:

[0025] (1) Edge extraction of the target celestial image, using the threshold method to segment the target celestial image, and then using the tangent method to extract the edge points of the celestial image;

[0026] (2) Calculate the gradient size of the edge point, and calculate the gradient size of all the edg...

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 relates to a target celestial body image culmination circle judgment method for deep space detection autonomous navigation. The method comprises: carrying out edge extraction on a target celestial body image, wherein a traditional edge operator method is adopted to carry out edge point extraction; selecting a candidate arc segment; carrying out fitting judgment; and carrying out culmination circle supplement judgment. A fitting precision of a center position of a target celestial body image can be directly affected if a culmination circle of a space target is not judged and is eliminated. With the present invention, a problem of target celestial body culmination circle judgment in interplanetary detection can be solved, and culmination circle judgment is adopted to find a true edge point to carry out target celestial body center position fitting so as to enhance a positioning precision of the celestial body image target center; and important engineering use values are provided for developments of high robustness, high refresh rate and high precision navigation celestial body sensors.

Description

technical field [0001] The invention relates to a method for judging the morning and evening line of a target celestial body image for autonomous navigation of deep space exploration, and belongs to the field of space optical imaging sensors. Background technique [0002] It is necessary to take pictures of other deep space exploration targets such as Mars and determine the direction of the Mars vector in both the Benhuo and the Huohu arcs. Due to the constraints of the sun's illumination and orbital position, the image of Mars will have a morning and evening line similar to the moon. At this time, if the point used for Mars center vector fitting uses the morning and evening line point, it will directly affect the positioning accuracy, which must be judged during the fitting process. The morning and evening line points are excluded, so a method for judging the morning and evening line must be designed. Document 1, Li Zheng, Determining the Morning and Dusk Line, Middle Scho...

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): G01C21/02G06T7/00
Inventor 王立周建涛余成武王大轶黄翔宇
Owner BEIJING INST OF CONTROL ENG
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