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Space debris fast detection and positioning method based on space-borne visible camera

A detection method and technology of space debris, which can be applied to measuring devices, surveying and navigation, photo interpretation, etc., and can solve problems such as limited computing resources

Active Publication Date: 2016-08-31
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] The technical problem to be solved by a space debris rapid detection and positioning method based on a spaceborne visible light camera disclosed by the present invention is to realize the identification, matching, and positioning of space debris imaging, and can meet high matching rate and high positioning accuracy, and can also solve The problem of limited computing resources on the star

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  • Space debris fast detection and positioning method based on space-borne visible camera
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  • Space debris fast detection and positioning method based on space-borne visible camera

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Embodiment 1

[0097] This embodiment discloses a space debris rapid detection and positioning method based on a spaceborne visible light camera. In order to verify the method, first, a space debris image is generated by simulation. The basic parameters of the camera are shown in Table 1. according to Image 6 The pinhole imaging model and the C-W equation are shown. The motion state of the debris relative to the spacecraft in the camera coordinate system at the initial time and the debris radius r are set as shown in Table 2. The spacecraft is running in a geosynchronous orbit. The first frame image obtained by the camera is like Picture 8 As shown, the white box is a partial enlarged view.

[0098] Table 1 Basic parameters of the camera

[0099]

[0100] Table 2 Initial relative motion state of fragments

[0101]

[0102]

[0103] Step 1: Through the method of connected domain detection, number the debris trajectories in the pictures taken by the satellite-borne visible light camera.

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Abstract

The invention discloses a space debris fast detection and positioning method based on a space-borne visible camera, relates to the space debris on-orbit fast identification, matching and positioning method based on the space-borne visible camera, and belongs to the field of spacecraft guidance and control. The method comprises the steps: numbering debris orbits in an image shot by the space-borne visible camera through a communication domain detection method; identifying target geometrical characteristics, and saving the debris imaging orbit geometrical characteristics; according to the image acquisition time and the debris imaging geometrical characteristics, making an inter-frame matching criterion, carrying out inter-frame matching, and making the debris imaging orbits between frames correspond to one by one; and according to the inter-frame matching result, calculating a target azimuth angles alpha and beta, and completing debris azimuth angle positioning. The identification, matching and positioning of the space debris imaging can be realized, and the high matching rate and the high positioning accuracy can be satisfied. In addition, according to the inter-frame matching result, ROI region selection is performed, the calculation efficiency of the communication domain detection is improved, and the problem of limited calculation resources on a star can be solved.

Description

Technical field [0001] The invention relates to a space debris rapid detection and positioning method, in particular to a space debris space-based visible light camera on-orbit rapid identification, matching and positioning method, belonging to the field of spacecraft guidance and control. Background technique [0002] Space debris on-orbit identification and parameter identification have special advantages in space debris orbit determination, space collision warning, and spacecraft collision avoidance. At present, ground-based observation methods are mainly used for space debris detection and positioning. However, ground-based observation methods are easily restricted by the curvature of the earth, atmospheric refraction, weather, and observation time window. In contrast, space-based observation has the advantages of wide detection range, unaffected by the earth’s atmosphere and weather, wide coverage, and high detection accuracy. [0003] Due to the relative motion between the ...

Claims

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Application Information

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IPC IPC(8): G01C11/00G01C11/04
CPCG01C11/00G01C11/04
Inventor 翟光赵琪张景瑞梁斌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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