A space target relative navigation system and method based on constellation coordination

Abstract

The present invention provides a space target relative navigation system coordinated by a constellation, comprising: a constellation, including a main star and at least six auxiliary stars, the main star communicates with any auxiliary star, and the auxiliary star is centered on the main star, according to the design Flying around in configuration, the auxiliary star measures its position coordinates relative to the main star and sends it to the main star. The selection method of the design screens out four auxiliary stars; the relative navigation filter is set on the main star, and according to the position measurement values ​​sent by the four selected auxiliary stars at the same time, through filtering estimation, it is calculated that the space target is in the orbit system. Relative to the position of the main star, the relative navigation of the space target through the constellation is realized only by angle measurement. The invention also includes a multi-angle relative navigation method under the modified spherical coordinate system.

Description

Technical field [0001] The present invention relates to the field of spacecraft navigation technology, and more particularly to a spatial target relative navigation system and method for a coordinated coordination. Background technique [0002] As space exploration is increasing, on the one hand, the micro-satellite is booming, and the large-scale micro-wear plans have been introduced; the number of space spam has also grown sharply, and it is threatening to run safety in the rail. Space garbage is usually a non-cooperative target of out-of control, and most of them are completely non-cooperative targets, so they cannot obtain any prior information on morphology, motion, optical, optically, and to detect space garbage. Effective way to clink in track collision. [0003] In the case of ultimate relative distances, only relative angle information can be obtained by tracking stars, and conventional single tracking stars are positioned by the angle relative navigation, which is usual...

AI Technical Summary

Problems solved by technology

[0003] In the case of ultra-long relative distances, only the relative angle information can be obtained by the tracking star. The traditional single tracking star locates the target by only measuring the angle relative navigation, which usually seriously affects the positioning accuracy due to insufficient observability.

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