Energy control method for high-precision orbit control of inclined-orbit marine dynamic satellites

Abstract

The invention discloses an energy control method in the high-precision orbit control process of an inclined-orbit marine power satellite, which includes: determining the orbit change time Torbit and the orbit change time length L 1 ;Determine the time T when the satellite starts to return to the zero attitude maneuver towards the ground from the yaw tracking mode 0 ; when t≥T 0 , set the satellite sailboard tracking to adopt the angle control method, and the satellite starts to yaw and return; the calculated sailboard control target angle α fr , and output the sailboard control command; when the satellite attitude is close to 0, the satellite automatically maintains the normal zero attitude to the ground; when t=Torbit, the satellite starts to change orbit autonomously, until the orbit change time length L is satisfied 1 ; when t≥Torbit+L 1 +T 1 When , the yaw tracking is carried out from zero attitude; when the attitude error meets the threshold condition, it is converted from the angle control mode to the simulated sun control mode. Under the premise of ensuring the energy safety of the whole satellite, the invention can well realize the high-precision orbit control of the satellite.

Description

technical field [0001] The invention belongs to the technical field of spacecraft orbit control, and in particular relates to an energy control method in the process of high-precision orbit control of a marine dynamic satellite in an inclined orbit. Background technique [0002] The main mission of the marine dynamic environment observation satellite is to observe the global marine dynamic environment parameters, including important ocean parameters such as sea surface wind field, sea surface height field, wave field, ocean current, sea storm, tide, ocean dynamic field, ocean circulation and sea surface temperature field. . It is an important monitoring method for marine disaster prevention and mitigation, of which the global high-resolution marine geoid data can directly serve national defense. [0003] In order to solve the continuous real-time observation of the ocean and reduce the time required for the coverage of the global marine area of ​​the marine dynamic environm...

AI Technical Summary

Problems solved by technology

In order for marine dynamic environment satellites to have high-precision and high-resolution marine geoid measurement data, high requirements are placed on the accuracy of satellite orbit maintenance. Generally, the maximum drift range of the ground trajectory is required to be better than 1km, and the half-field axis control error of the satellite orbit The requirement is better than 1m. For polar-orbiting marine satellites, the low-thrust orbit control scheme in the wheel control mode of the HY-2 satellite can be used. Under the constraints of various aspects, it is a great challenge to realize satellite high-precision orbit control

Images