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Image full-frame scanning based space debris detecting method

A technology of space debris and detection methods, which is applied to the interpretation of photos and other directions, can solve the problems of increasing the probability of false alarms and affecting the success rate of detection, and achieves good processing results.

Inactive Publication Date: 2012-09-05
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Problems solved by technology

However, in the process of real-time image acquisition by CCD, there are not only error factors from the readout circuit of the CCD itself, but also factors affecting the working environment of the CCD and clouds, which will affect the background fluctuation of the CCD image and affect the detection of space debris. Especially the influence of faint space debris, thus increasing the probability of false alarm and affecting the detection success rate

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  • Image full-frame scanning based space debris detecting method
  • Image full-frame scanning based space debris detecting method

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Embodiment Construction

[0023] Further description will be given below in conjunction with the examples.

[0024] Such as figure 1 as shown, figure 1 Inside the dotted line box is the process in this embodiment, a space debris detection method based on image full-frame scanning, including the following steps:

[0025] 1. Steps for collecting images of space debris and background stars, including:

[0026] The image acquisition system acquires frame-shifted CCD images. Its workflow is to control the frame transfer CCD, according to the given exposure time, according to the sampling frequency obtained by the image readout frequency of the frame transfer CCD, the frame transfer CCD image of the collected space debris and background stars is transmitted to the designated computer memory buffer, image acquisition ends.

[0027] 2. Image background estimation steps, specifically including:

[0028] The frame-transfer CCD image is analyzed comprehensively, and the mathematical model of frame-transfer C...

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Abstract

The invention relates to an image full-frame scanning based space debris detecting method. The method comprises the following steps: collecting an image of space debris and a background star; estimating the image background; scanning the full frame of the image; and detecting a moving star image. The method can realize detection on the space debris by adopting a single-frame or multi-frame CCD image in a full-frame scanning mode.

Description

technical field [0001] The invention relates to a space debris detection method based on full-frame image scanning, which can flexibly adopt single-frame and multi-frame frame transfer CCD images according to a given detection threshold, and detect moving stars on the image, thereby being A very good space debris detection method. Background technique [0002] In many fields such as scientific research and military affairs, it is necessary to monitor space debris, give the position and changes of space debris in the sky at every moment, determine the orbit of space debris, and obtain accurate information about space debris. [0003] The invention of CCD has replaced the traditional photographic observation and has become one of the effective means of monitoring space debris, especially for space debris in medium and high orbits. For scientific-grade CCDs, there are usually three readout methods: full-frame readout, interline transfer readout, and frame transfer readout. Be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/04
Inventor 张晓祥
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI