A Space Debris Detection Method Based on Inertial Space

Abstract

The invention discloses a space debris detection method based on inertial space, which comprises the following working steps: image background estimation; astrology scanning and two-dimensional plane coordinate reduction; three-dimensional space vector reduction; background star elimination; space debris detection. The present invention abandons the process of relying on two-dimensional plane coordinates to meet a given threshold to eliminate star images, and only relies on the different motion rules of background stars and space debris astrology in inertial three-dimensional space (vectors of adjacent frame stars in inertial space basically coincide or their corresponding The right ascension and declination of the telescope are basically unchanged) and the astrology of background stars is eliminated, which realizes the detection of space debris in different observation modes of the telescope, and is especially suitable for the unstable situation of space debris tracking. According to the given detection threshold, the present invention can flexibly adopt multi-frame CCD images to detect non-stellar targets whose apparent motion speed is faster than that of stars, reduce detection false alarms caused by bright stars and other factors, and improve dim space debris. detection success rate.

Description

technical field [0001] The invention belongs to the technical field of space debris detection, in particular to a space debris detection method based on inertial space. Background technique [0002] In many fields such as scientific research and military, it is necessary to monitor space debris, give the position and change of space debris in the sky at every moment, determine the orbit of space debris, and obtain accurate information of space debris. [0003] The invention of CCD has replaced 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. CCDs that use frame transfer and inter-line transfer readout usually have the advantages of small target surface, fast readout speed, and almost no tail-off phenomenon on the readout ...

AI Technical Summary

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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