Rendezvous docking method and device of space non-cooperative target

Abstract

The invention relates to the aerospace field, and provides a rendezvous docking method and device of a space non-cooperative target. The method comprises the steps of guiding the space non-cooperative target to a system capture range through ground guideness; determining measurement angle of sight, relative distance and azimuthal angle respectively according to the simplest combination of measurement components capable of determining relative parameters of the space non-cooperative target; carrying out relative navigation by using an extended Kalman filter algorithm, according to the capture measurement results; tracking track the target by executing CW reference trajectory guidance and linear reference trajectory guidance respectively to according to navigation results and giving out a relative position and relative speed equation of an ideal trajectory; and carrying out thrust control by adopting a PID control law and a pseudo rate pulse modulator during an approaching process. Through capturing, tracking and approaching of the space non-cooperative target, autonomous capturing, continuous tracking and stable approaching of the space non-cooperative target can be finished after a spacecraft enters a work range of capturing the non-cooperative target, thereby realizing rendezvous docking of the space non-cooperative target.

Description

technical field [0001] The invention belongs to the field of aerospace and aviation, and in particular relates to a rendezvous and docking method and device for space non-cooperative targets. Background technique [0002] With the development of aerospace technology, space on-orbit service has become an important trend in space exploration missions due to the requirements of spacecraft maintenance, renewal, and assembly, and the demand for rendezvous and docking of space targets, especially space non-cooperative targets, is also increasing. more and more urgent. [0003] Most of the current rendezvous and docking experiments are aimed at space cooperation spacecraft. Among them, cooperative spacecraft usually include the following features or structures: laser reflectors, radio frequency transmitters for ranging and communication transmission, easily distinguishable visible or reflective apparent features, capture fixtures, and appropriate attitude control systems . Other...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method and device for rendezvous and docking of non-cooperative objects in space, so as to solve the problem in the prior art that non-cooperative objects in space are not equipped with characteristic structures such as targets and reflectors, and cannot complete the rendezvous and docking with non-cooperative objects in space. Communication, the problem of not being able to accurately complete accurate and effective rendezvous and docking with non-cooperative targets

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