Energy control method in high-precision orbit control process of inclined orbit ocean power satellite

Abstract

The invention discloses an energy control method in a high-precision orbit control process of an inclined orbit ocean power satellite. The energy control method comprises the following steps: determining an orbit transfer moment Torbit and an orbit transfer duration L1; determining a maneuvering moment T0 when the satellite starts to return to the earth zero attitude from the yaw tracking mode; when t is greater than or equal to T0, setting a rotation angle control mode for satellite sailboard tracking, and enabling the satellite to start yawing and returning; calculating to obtain a sailboard control target angle [alpha]fr, and outputting a sailboard control instruction; when the attitude of the satellite approaches 0, enabling the satellite to automatically keep a normal earth zero attitude; when t is equal to Torbit, enabling the satellite to autonomously start orbital transfer until the orbital transfer duration L1 is met; when t is greater than or equal to Torbit + L1 + T1, performing yaw tracking from a zero attitude; and when the attitude error meets a threshold condition, converting from a corner control mode to a simulated sun control mode. According to the invention, on the premise of ensuring the energy safety of the whole satellite, the high-precision orbit control of the satellite is well realized.

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 high-precision orbit control process of an inclined-orbit marine power satellite. Background technique [0002] The main mission of the ocean dynamic environment observation satellite is to observe global ocean 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, and 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 to cover the global ocean area of ​​the marine dynamic environment, the satellites of the marine...

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

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