A method and system for obtaining solar trajectory
A motion trajectory and acquisition method technology, applied in the solar motion trajectory acquisition method and system field, can solve the problems of increasing satellite remote control channel pressure, unable to eliminate model truncation error, and reduce model unreliability, so as to achieve small error and increase reliability , The effect of simplifying the system solution
Inactive Publication Date: 2021-06-22
SHANGHAI ENG CENT FOR MICROSATELLITES
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Problems solved by technology
[0012] 1) Due to the inclusion of remote control processing, the pressure on the satellite remote control channel is increased, and the unreliability of the model is reduced;
[0013] 2) Remote control processing can only eliminate the error caused by the small change of astronomical parameters to the model, but cannot eliminate the truncation error caused by the model itself
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[0053] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0054] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...
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The present invention provides a method and system for acquiring the trajectory of the sun, including acquiring the true celestial longitude and the flat celestial longitude of the sun in a set time period; acquiring the fluctuation curve of the true celestial longitude of the sun relative to the flat celestial longitude in the set time period; The true celestial longitude of the sun is fitted with the fluctuation curve of the flat celestial longitude of the sun to obtain the true celestial longitude of the sun; according to the true celestial longitude of the sun and the solar motion model obtained by the fitting, the coordinates of the solar trajectory are obtained. The method and system for obtaining the solar motion trajectory of the present invention can describe the complex solar motion law without remote control correction, and the calculation is simple, the error is small, and the error will not increase with time.
Description
technical field [0001] The invention relates to the technical field of attitude measurement of spacecraft and satellites, in particular to a method and system for acquiring solar motion trajectory. Background technique [0002] Due to the complex system, high cost and irreparable features of satellites, reliability requirements are often put at the top of the list. As one of the core technologies of satellites, the reliability of attitude control technology determines the success or failure of satellite missions. In order to ensure the high reliability of the satellite attitude control system, on the one hand, it is necessary to use simple and reliable components and methods as much as possible while ensuring the system performance; on the other hand, it is necessary to increase the system redundancy configuration. [0003] The satellite attitude control system consists of attitude determination and control to ensure that the satellite attitude meets the mission requirement...
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IPC IPC(8): G01C21/02G01C21/24
CPCG01C21/025G01C21/24
Inventor 米鹏张静朱振才王磊闫骁绢林晓冬谢祥华刘善伍
Owner SHANGHAI ENG CENT FOR MICROSATELLITES