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Detection system of space debris

A space debris and detection system technology, applied in the theodolite and other directions, can solve problems such as affecting the detection success rate and increasing the probability of false alarms, and achieve good results in actual detection.

Inactive Publication Date: 2012-02-22
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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  • Summary
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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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  • Detection system of space debris
  • Detection system of space debris

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Embodiment Construction

[0017] Further description will be made below in conjunction with drawings and embodiments.

[0018] like figure 1 As shown, a space debris detection system 1 includes a frame transfer CCD imaging device,

[0019] 1. Time-keeping system

[0020] Receive GPS time signal in real time, monitor CCD exposure start signal and end signal in real time, and latch the time information of CCD exposure start and end moment, including year, month, day, hour, minute, second, millisecond, accurate to 0.1 mm (millisecond?).

[0021] 2. Image acquisition subsystem

[0022] The image acquisition subsystem performs real-time acquisition of frame-shifted CCD images. Its workflow is to control the frame shift CCD device, collect CCD images according to the sampling frequency (for example: 5Hz) obtained by the readout frequency of the image device of the frame transfer CCD according to the given exposure time, and collect the space debris and background stars. Frame transfer CCD image transmiss...

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Abstract

The invention relates to a detection system of space debris. The detection system comprises a frame transfer CCD image device, a time division recording system monitoring the exposure start signals and the end signals of CCD in real time, locking and storing the exposure start and end time information of CCD, an image collecting subsystem collecting frame transfer CCD images in real time, an image background estimation device comprehensively analyzing the frame transfer CCD images and estimating the background of the frame transfer CCD images, a full frame scanning device inputting the initial frame transfer CCD mages according to the estimation result of the background of the frame transfer CCD mages, scanning the full frame of the frame transfer CCD mages and providing the scanning result images of the frame transfer CCD mages, a star image detection device adopting different detection thresholds, synthesizing a plurality of various judgment characteristics of a star image and detecting all the motion star images on the frame transfer CCD images according to the scanning result of the frame transfer CCD images and a device providing the detection result of the motion star images on the frame transfer CCD images.

Description

technical field [0001] The present invention is a brand-new space debris detection system. With the cooperation of an optical imaging subsystem equipped with a frame transfer CCD (CCD image sensor), the system can flexibly use single-frame and multi-frame frames according to a given detection threshold. Transfer the CCD image, detect the moving astrology on the image, and complete the detection of the moving astrology on the empty image. The servo control subsystem uses the detection results of the system to realize the tracking of moving stars on the image. This system is a very good space debris detection system. 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 photog...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C1/02
Inventor 张晓祥
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI