Track prediction processing method based on in-orbit data fusion

Abstract

The invention discloses a track prediction processing method based on in-orbit data fusion. The method comprises the following steps of determining an initial pulse and a terminal brake pulse according to a first relative position, a first relative speed, a second relative position, a second relative speed, and a predicted destination information extracted from telemeasuring data; determining a first vector speed and a second vector speed according to the first relative speed, the second relative speed, the initial pulse, and the terminal braking pulse; and acquiring a track prediction resultaccording to a motion state sequence determined by the first relative position, the first relative speed, the first vector speed, and the second vector speed under each resolving step length time point, and generating a track prediction curve. In the invention, the specific requirements of real-time performance, accuracy, customizability and in-orbit state consistency to the track prediction during a spacecraft rendezvous and docking flight control mission process are realized, a track can be accurately predicted and can be clearly and effectively displayed, and a reference is provided for ground flight control monitoring and decision making.

Description

technical field [0001] The invention belongs to the technical field of spacecraft ground flight control and support, and in particular relates to a trajectory prediction processing method based on on-orbit data fusion. Background technique [0002] Facing the increasingly complex on-orbit flight control tasks of spacecraft, although the autonomous flight capability of spacecraft and the level of automation and intelligence have been greatly improved, the participation of ground personnel is still required in the execution of many major flight events, especially In the face of rendezvous and docking, which involves the coordinated control of multiple spacecraft and requires very high safety and timeliness, at present, domestic and foreign countries still choose to rely mainly on the ground for decision-making and intervention, and the trajectory prediction of the relative position of the two spacecraft is It is an important means to evaluate the safety of flight trajectory an...

AI Technical Summary

Problems solved by technology

[0005] However, there are many problems in the existing trajectory prediction: poor flexibility, there is a big difference between the flight state of the spacecraft and the nominal design state, the processing results will deviate from the actual flight state, and the reference value for ground monitoring and decision-making of flight control tasks is low; The processing cycle is relatively long, and the real-time forecast and monitoring of the trajectory cannot be achieved

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