Earthlight light pressure perturbation modeling method for navigational satellite complicated model

Abstract

The invention provides an earthlight light pressure perturbation modeling method for a navigational satellite complicated model. The method particularly includes the first step of obtaining related parameters of all surface components on a satellite to be analyzed in a satellite body coordinate system, the second step of calculating the optical radiation intensity of earthlight when the included angle between a sun vector and the positive Z-axis in the satellite body coordinate system is theta EPS, the third step of establishing light path tracking of the earthlight according to the related parameters and the optical radiation intensity of the earthlight and calculating the light pressure perturbation accelerated speed a of the earthlight, the fourth step of allowing the included angle theta EPS to be different values and calculating the light pressure perturbation accelerated speed a corresponding to each included angle theta EPS, and the fifth step of establishing an earthlight light pressure perturbation model f (theta EPS) on the basis of the light pressure perturbation accelerated speed corresponding to each included angle theta EPS with the included angle theta EPS as an independent variable. Trough the method, a high-precision satellite dynamical model can be improved, and the accuracy of precise orbit determination and orbit prediction can be further improved.

Description

technical field [0001] The invention relates to a modeling method for earth albedo light pressure perturbation, in particular to a modeling method for earth albedo light pressure perturbation modeling of complex models of navigation satellites, and belongs to the technical field of aircraft design. Background technique [0002] With the improvement of precision orbit determination and orbit prediction accuracy requirements of navigation satellites, the establishment of accurate satellite dynamic models has become an engineering requirement. Photopressure perturbation is the most important error source of navigation satellites at present, and its accuracy directly affects the precise orbit determination and orbit prediction of satellites. The perturbation sources that conform to the light pressure perturbation mechanism include sunlight, the satellite's own thermal radiation, and the Earth's return light. At present, there is no published research on the precise modeling of ...

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Problems solved by technology

At present, there is no published research on the precise modeling of the Earth's albedo light pressure perturbation at home and abroad

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