Adaptive satellite selection method and system with celestial body interference

Abstract

The invention discloses an adaptive satellite selection method and system with celestial body interference. The method comprises: obtaining the optical axis information of a star sensor sent by a starlight analog module and formed by an orbit; selecting a optimum interval of observing the refractive starlight; establishing a starlight observation window according to the position of a spacecraft, determining the area of the fixed star observed by the star sensor; analyzing the starlight refraction celestial body interference to select and optimize the starlight observation window; determining an observing star area of the spacecraft according to the obtained starlight observation window to obtain a selectable refraction star range of the spacecraft, predicting the direction and information of the fixed star of which starlight occurs refraction according to the given position and time information of the spacecraft by using a starlight refraction navigation error minimum satellite selection method, and selecting the adaptive navigational star. The adaptive satellite selection method and system with celestial body interference can exclude the celestial body interference according to the given position and time information of the spacecraft, and can predict the direction and information of the fixed star of which starlight refracting accurately, so that the function of selecting the adaptive navigational star is realized.

Description

technical field [0001] The invention relates to an adaptive star selection method and system, in particular to an adaptive star selection method and system with celestial body interference. Background technique [0002] With the continuous improvement of star sensor accuracy, starlight positioning and navigation technology has become more and more mature, and its passive, concealed, and navigation error does not accumulate with time and other characteristics have attracted more and more attention from experts and scholars at home and abroad. However, due to the limitation of cost, technical conditions and other factors, it is unrealistic to conduct frequent flight tests to test and study the starlight navigation method, so the research is usually carried out through the semi-physical simulation experiment platform of the laboratory at home and abroad. [0003] figure 1 It is a schematic diagram of the architecture of the laboratory starlight semi-physical simulation experim...

AI Technical Summary

Problems solved by technology

The above methods are all based on the minimum geometric precision attenuation factor to select several positioning stars for positioning. The calculation amount in the process of star selection is large, and it takes a long time. There is no effective analysis and screening of celestial interference for starlight refraction navigation and the realization of star selection navigation. Fast and high-precision star selection strategy with minimum error

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