Sun protection attitude control associated design method of optical imaging satellite camera

Abstract

The invention provides a sun protection attitude control associated design method of an optical imaging satellite camera and is applicable to geostationary orbit large-aperture optical imaging satellites. The method includes: providing a yaw guide control method, and using polynomial fitting to obtain the optimal yaw guide law using the solar altitude as the variable and the optimal yaw angle as the dependent variable; aiming at the design constraint that a satellite only has a three fold plate type sunshade mounted in the -X direction, providing yaw maximum angle maneuver control before and after noon, and building a satellite-borne attitude maneuver path planning algorithm which is performed automatically according to the current solar altitude to achieve the seamless connection of loadsun protection; providing a maneuver control strategy combining limit area work before and after midnight and sun avoiding to achieve midnight load sun protection, and allowing the working time of thesatellite to be maximum at the same time. By the method, the eight-stage type attitude control strategy with each orbit comprising three attitude maneuvers, the whole-orbit load sun protection of thegeostationary orbit large-aperture optical imaging satellites and the longest business imaging are achieved.

Description

Technical field [0001] The present invention relates to a space vehicle control and propulsion subsystem and payload subsystem technology, in particular to a new type of geostationary orbit large-aperture optical imaging satellite camera sun protection attitude control associated design method. Background technique [0002] In recent years, the world's major aerospace countries have formulated plans for the development of large-aperture optical imaging satellites in geostationary orbit. Compared with low-orbit high-resolution optical imaging satellites, satellites operating in this orbit have the characteristics of staying above the equator and operating synchronously with the rotation of the earth, which is very conducive to long-term imaging of fixed areas. However, due to the constraints of the geometrical relationship between the satellite, the earth, and the sun, a large-aperture optical imaging satellite in a geostationary orbit must be equipped with a hood or a visor to pr...

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Problems solved by technology

[0003] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

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