Space debris observation method based on alternating of different exposure times of CCD camera

Abstract

The invention discloses a space debris observation method based on alternating of different exposure times of a CCD camera. The space debris observation method comprises the steps: controlling the CCDcamera to continuously carry out the alternate collection of short exposure images and long exposure images according to the given exposure time; by processing odd frames of short-exposure images, realizing detection and astronomical positioning of low, medium and high orbit space debris; by processing the even-frame-length exposure images, detecting medium-high orbit space debris, and meanwhileachieving astronomical positioning of the medium-high orbit space debris detected by the current frame through negative film model coefficients of the front-back adjacent odd-frame images; and in a search observation mode, through a multipoint adjustment method and negative film model coefficients of adjacent odd frames, realizing precise astronomical positioning of low, medium and high orbit space debris. The space debris observation method realizes simultaneous detection and precise astronomical positioning of all-orbit space debris, improves the observation efficiency of observation equipment, and guarantees the measurement precision of the observation equipment for the all-orbit space debris.

Description

technical field [0001] The invention relates to the technical field of space debris observation, in particular to a space debris observation method based on the alternation of different exposure times of a CCD camera. 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] No matter in the tracking mode or the search mode, the traditional observation method is that the CCD camera basically collects images according to a fixed exposure time within a certain period of time. [0004] In the tracking mode, in order to improve the detection success rate of space debris in dim low-medium-high orbits, the only way to increase the exposure time is to cause the background stars to be too long, making it impossible to achieve astronomica...

AI Technical Summary

Problems solved by technology

[0007] (1) The short exposure of the CCD camera is beneficial to the detection of space debris in low orbits and ensures the accuracy of astronomical positioning, but it causes the detection of space debris in dim and high orbits to fail

[0008] (2) The long exposure of the CCD camera in the tracking mode is conducive to the detection of space debris from low, medium and high orbits, but it will lead to a decrease in the astronomical positioning accuracy of space debris in low, medium and high orbits or failure of astronomical positioning

[0009] (3) The long exposure of the CCD camera in the constant motion search mode is conducive to the detection of space debris in the dark, middle and high orbits and ensures the accuracy of astronomical positioning. However, due to the serious elongation of the star image of the space debris in low orbits, the detection of space debris in low orbits fails.

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