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Real-time astronomical positioning and photometry of space debris based on automatic pointing determination

A technology for astronomical positioning and space debris, which is applied in astronomical navigation, measurement devices, surveying and navigation, etc., and can solve problems such as low correction accuracy of telescope pointing errors and influence of correction accuracy.

Active Publication Date: 2021-03-16
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Problems solved by technology

Even so, in the sky area with a low elevation angle, the correction accuracy of the telescope pointing error is low due to the influence of the correction accuracy of atmospheric refraction

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  • Real-time astronomical positioning and photometry of space debris based on automatic pointing determination
  • Real-time astronomical positioning and photometry of space debris based on automatic pointing determination
  • Real-time astronomical positioning and photometry of space debris based on automatic pointing determination

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Embodiment Construction

[0065] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0066] combine figure 1 , the present invention refers to a real-time astronomical positioning and photometry method for space debris based on automatic pointing determination, the real-time astronomical positioning and photometry method comprising the following steps:

[0067] S1: Generate the astronomical positioning star library, and the first index data used to express the information of all the stars contained in the astronomical positioning star library; based on the astronomical positioning star library, generate the theoretical star map of the whole sky area, and use it for expression The second index data of the angular distance information between stars contained in the theoretical star map of the whole sky area.

[0068] S2: Receive at least one frame of images including space debris an...

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Abstract

The invention discloses a method for real-time astronomical positioning and photometry of space debris based on automatic determination of pointing, including: generation of theoretical star map; star image of stars and space debris; generation of measured star map; matching of theoretical star map and measured star map; pointing and Image plane rotation determination; star retrieval; film model optimization; photometric model calculation; space debris astronomical positioning and photometry. The invention can automatically optimize the negative film model according to the size of the observation field of view, automatically measure the image center pointing and image plane rotation angle according to the given time on the image, realize the automatic matching of the theoretical coordinates of the stars and the measured coordinates, and realize the gray value of the stars on the image. The automatic matching of its theoretical magnitude enables the real-time astronomical positioning and photometry of space debris.

Description

technical field [0001] The invention relates to the technical field of space debris positioning, in particular to a method for real-time astronomical positioning and photometry of space debris based on automatic pointing determination. Background technique [0002] In many fields such as scientific research and military affairs, it is necessary to monitor space debris. On the one hand, it measures the position and changes of space debris in the sky at each observation moment, and determines the orbit of space debris, so as to obtain accurate information about space debris. Based on this requirement, accurate measurement of space debris is a very important basic link. Without accurate measurement of space debris, space debris orbit identification, cataloging orbit determination, and precise orbit determination cannot be realized. [0003] There are two methods for accurately measuring the position of space debris: absolute positioning and relative positioning. Absolute positi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02
CPCG01C21/025
Inventor 张晓祥高昕李希宇
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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