High precision positioning method of dark space debris

Abstract

A high precision positioning method of dark space debris comprises the following working steps: (1) acquiring three continuous frames of CCD images; (2) calculating negative models of a first frame image and a third frame image; (3) calculating a negative model of a second frame image; (4) positioning a dark space debris; (5) carrying out the above four steps to finally obtain a positioning result of the dark space debris on the second frame CCD image; and (6) storing and displaying the positioning result. The method of the invention can realize high precision positioning on the dark space debris, when the CCD image has a long exposure time, and is quite a good method for positioning the dark space debris. The method has good actual treatment and can be widely applied to monitoring of space debris.

Description

technical field [0001] The invention relates to a real-time faint space debris positioning method, which can realize high-precision positioning of faint space debris under the condition of long CCD image exposure time, and is a very good faint space debris positioning method. Background technique [0002] In many fields such as scientific research and military affairs, it is necessary to monitor space debris, so as to 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, thereby Provide relevant information to spacecraft in orbit. [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. In the process of observing space debris, in order to improve the positioning accuracy of space debris, there are usually certain req...

AI Technical Summary

Problems solved by technology

When the integration time is short, the signal-to-noise ratio of the star image formed by faint space debris on the CCD image is low, which may cause the star image not to be detected or the positioning accuracy of the star image to be low. Therefore, in order to improve the signal-to-noise ratio of the faint space debris , that is, to improve the positioning accuracy of faint space debris, it is necessary to increase the exposure time of the CCD image

However, if the exposure time of the CCD image is longer, the trajectory of the background stars on the CCD image will become very long, that is, the aspect ratio of the star image will become larger, thereby reducing the signal-to-noise ratio of the background star image and reducing the intensity of the star image. Positioning accuracy, thus affecting the positioning accuracy of faint space debris

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