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

Abstract

The invention discloses a space debris real-time astronomical positioning method based on automatic pointing measurement. The method comprises the steps of forming a theoretical star map; forming starimages of fixed stars and space debris; generating an actually measured star map; matching the theoretical star map with the actually measured star map; performing pointing and image plane rotation measurement; performing fixed star retrieval; optimizing a negative film model; and performing space debris astronomical localization. According to the invention, a negative film model can be automatically optimized according to the size of an observation view field, the image center pointing and the image plane rotation angle are automatically measured according to the given time on the image, andthe automatic matching of fixed star theoretical coordinates and actually measured coordinates is realized, so that the real-time astronomical positioning of space debris is realized; the telescope shafting machining precision requirement and the external field installation and debugging requirement are reduced, the observation station environment temperature parameter input requirement is reduced, and the requirement for pointing calibration before observation is reduced; under the condition that telescope pointing calibration cannot be achieved without precise astronomical longitude and latitude, the two-axis zero point difference of the telescope can be automatically measured, and real-time astronomical positioning of space debris can also be achieved.

Description

technical field [0001] The invention relates to the technical field of space debris positioning, in particular to a real-time astronomical positioning method for 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] Usually, in order to realize the astronomical positioning of space debris, the following three things must be done in advance: (1) Obtain the rotation angle ...

AI Technical Summary

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

Images