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Space debris detection method and system based on stellar retrieval

A space debris and detection method technology, applied in the direction of measuring devices, surveying and navigation, and photo interpretation, can solve the problems of complex detection process and prone to false detection, achieve consistent processing methods, and avoid missed detection of space debris Effect

Active Publication Date: 2019-10-18
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Problems solved by technology

[0014] The observation modes mentioned above are different, and the processing methods are also different, including not only the detection process of space debris, but also the identification process of background stars. Users need to set different processing schemes for multiple detection steps. The detection process is complicated and prone to errors. check

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  • Space debris detection method and system based on stellar retrieval
  • Space debris detection method and system based on stellar retrieval
  • Space debris detection method and system based on stellar retrieval

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Embodiment Construction

[0044] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0045] to combine figure 1 , the present invention refers to a space debris detection method based on star retrieval, the detection method comprising:

[0046] S1: Receive at least one frame of images including space debris and background stars, and estimate the image background.

[0047] S2: According to the estimated result of the image background, scan the image in full frame, and calculate the two-dimensional plane coordinates (x, y) of all star images on the image, where the upper left corner of the image is set as the coordinate origin (0, 0), The right side of the image is the increasing direction of the x-axis, the lower side of the image is the increasing direction of the y-axis, x is the distance between the position of the star image in the image and the origin of the coordinates in the...

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Abstract

The invention discloses a space debris detection method based on stellar retrieval. The method comprises: receiving images and estimating image backgrounds; performing full-frame scanning on the images according to the estimation results of the image backgrounds, and calculating two-dimensional plane coordinates of all the stars on the images; acquiring three-dimensional vectors of inertial spacecorresponding to all stars by combining the actually measured coordinates of the two-dimensional planes of all stars on the images by means of astronomical positioning and acquiring two-dimensional tangent plane theoretical coordinates of all fixed stars; identifying and rejecting background fixed stars in all images; and acquiring track features of the remaining stars, and detecting all space debris in the images. Therefore, the fixed stars in the single-frame images can be identified and rejected based on preset fixed star identification conditions; multi-frame images can be used flexibly; and the space debris of the image is detected, so that the detection false alarm caused by factors like the bright fixed star is reduced; and the detection success rate of the weak space debris is improved.

Description

technical field [0001] The invention relates to the technical field of space debris identification, in particular to a space debris detection method and system based on star retrieval. 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. Because the CCD read out with frame transfer and interline transfer usually has the advantages of small target area, fast readout speed and almost no t...

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Application Information

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IPC IPC(8): G01C11/00G01C11/04
CPCG01C11/00G01C11/04
Inventor 张晓祥高昕李希宇
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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