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Space-target real-time astronomical positioning method

A space target, astronomical positioning technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of low precision, low stability, unable to achieve precise measurement of space targets, etc., and achieve the effect of high precision and good stability

Inactive Publication Date: 2005-12-21
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

As the shafting positioning is affected by a series of factors, the result of shafting positioning has the characteristics of low stability and low precision, and it is impossible to achieve precise measurement of space targets.

Method used

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  • Space-target real-time astronomical positioning method

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Embodiment 1

[0021] Embodiment 1, the device of space target real-time astronomical positioning method, refer to figure 1 . Including the following working steps:

[0022] 1. The image collection subsystem collects images of space objects and background stars,

[0023] After determining the frequency of image acquisition (for example, 5HZ), the image acquisition subsystem initializes the CCD every predetermined time (for example, 200 milliseconds), and the CCD starts to expose according to the set time, and gives an exposure start signal, and the exposure ends After that, the image is transferred to the buffer designated by the computer memory, and the image acquisition ends;

[0024] 2. The servo control subsystem provides code disc readings to the computer;

[0025] The servo control subsystem monitors the CCD exposure start signal in real time, and when the CCD exposure start signal arrives, it provides the computer with the code disc reading at the corresponding time;

[0026] 3. T...

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Abstract

A method of real time astrofix for space target includes using image collection subsystem to collect image of space target and background star , using servo subsystem to provide code wheel reading to computer , using GPS time subsystem to provide time data to computer and using astrofix software system to calculate out accurate positioning result of space target based on three input factors given as above .

Description

technical field [0001] The invention relates to a real-time astronomical positioning method for a space target, in particular to a precise measurement method for a space target. Background technique [0002] In many fields such as scientific research and military affairs, it is necessary to monitor space objects, so as to give the position and changes of space objects in the sky at every moment, determine the orbit of space objects, and obtain accurate information of space objects ( orbital characteristics, physical configuration and purpose). [0003] In the prior art, the space target is positioned by means of shaft positioning, and the method includes the following steps: collecting CCD images, the direction of the telescope and GPS time, calculating the position of the space target on the CCD image, and synthesizing the position of the space target. Because this space target positioning method is an absolute positioning method, the positioning accuracy is affected by a ...

Claims

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Application Information

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IPC IPC(8): G01B11/03
Inventor 鲁春林张晓祥顾光德
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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