A method for enhancing and extracting high-magnitude sliding stars in the field of view of a telescope

Abstract

The invention discloses a method for enhancing and extracting high stars and other sliding fixed stars in the view field of a telescope. Aiming at the problems that high background stars and other sliding fixed stars are low in detection rate and not high in positioning precision in the celestial positioning process, the astronomy and an image processing technique are combined, the sliding tracks of the fixed stars are calculated by using astronomical information, and reliable enhancement and high-precision extraction of the high stars and other sliding fixed stars are realized by using a background equalization method, a quasi-randomized orbital determination method, a noise normalization method, a double-threshold orbital determination correlation method, a two-step centroid extraction method and other image processing techniques, so that technical support is provided for the celestial positioning. The method has the benefits that the false detection rate and the misdetection rate are extremely low; the influence from interference factors among fixed stars, of other celestial bodies and background noise and the like can be better overcome; weak high stars and other fixed stars are extracted; information about the number, the size, the position, the precision and the like of the fixed stars are synchronously obtained; besides, fewer parameters are set and the set parameters are simple, and real-time processing can be realized.

Description

technical field [0001] The invention belongs to the field of photoelectric measurement, in particular to a method for enhancing and extracting high-magnitude sliding stars in the field of view of a telescope. Background technique [0002] Astronomical positioning is a method commonly used by telescopes to track and locate space targets. It refers to using the telescope image system to collect images of space targets and background stars, and after star extraction and star map matching, the position information of the target relative to the stars is obtained. Compared with other positioning methods, the astronomical positioning method is not affected by factors such as telescope pointing error and atmospheric refraction, and greatly improves the positioning accuracy. It is the main method used by the new generation of telescopes to determine space targets. For a telescope with a large field of view, there are usually more stars with low magnitudes in the field of view, so a c...

AI Technical Summary

Problems solved by technology

[0013] The technical problem solved by the present invention: Aiming at the problems of low detection rate of sliding stars with high background magnitude and low positioning accuracy in astronomical positioning, a fast and effective star enhancement and extraction method is provided by combining astronomy and image processing technology, which can Greatly improve the signal-to-noise ratio of sliding stars, realize reliable detection of high-magnitude sliding stars, and accurately extract the real-time barycenter position of stars, thus providing technical support for astronomical positioning

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