Distance control method and system for relative movement between satellites

Abstract

The invention relates to the technical field of satellite control, and discloses a distance control method for relative motion between satellites, and the method comprises the steps: reducing the distance between an accompanying satellite and a reference satellite through a first position relation, and increasing the distance between the accompanying satellite and the reference satellite according to a second position relation; the distance between satellites can be kept between the set maximum distance and the set minimum distance. In this way, on one hand, the inter-satellite distance can be prevented from being too large, and it is guaranteed that the two satellites are located in the maximum distance range required by communication or other cooperative relations; and meanwhile, the situation that the distance between satellites is too small and the two satellites collide with each other can be avoided. According to the method provided by the invention, the influence of satellite orbit perturbation can be tolerated, and the inter-satellite distance is allowed to naturally change between the maximum distance and the minimum distance, so that the fuel consumption can be saved and controlled. According to the method provided by the invention, only relative motion state information between satellites is needed, the satellite orbital elements do not need to be accurately controlled, and the method has simplicity and convenience in motion measurement and control implementation.

Description

technical field [0001] The invention relates to the technical field of satellite control, in particular to a distance control method and system for relative movement between satellites. Background technique [0002] One or more auxiliary satellites are used to accompany the movement of the main satellite. Through the cooperative work of the main satellite and the auxiliary satellite, the capability of the main satellite can be expanded or the mission performance can be improved, and even tasks that cannot be completed by a single satellite have become a reality. New mode for space missions. For short-distance multi-satellite cooperative missions, some require that the satellites strictly maintain a prescribed relative trajectory, and some only need to maintain a loose accompanying flight with a bounded distance between satellites. For cooperative tasks with strict requirements on relative motion trajectory, since maintaining the specified relative motion requires continuous...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the above-mentioned distance maintenance control problem of two satellites flying together in close proximity on a near-circular orbit, and provides a distance control method and system for relative motion between satellites to solve the problems existing in the prior art

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