On-satellite autonomous satellite orbit prediction method

A technology of orbit forecasting and satellite orbit, which is applied in the direction of integrated navigator, etc., can solve the problems of simplified algorithm with less running time, slow running time, and occupation of total rudder computing resources, so as to achieve the accuracy of engineering practice, reduce running time, and high calculation effect of ability

Active Publication Date: 2018-12-21
中科天智运控(深圳)科技有限公司
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Problems solved by technology

As mentioned above, although the precise algorithm has high orbit prediction accuracy, it needs to occupy the total rudder computing resources and the running time is slow; the simplified algorith

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  • On-satellite autonomous satellite orbit prediction method
  • On-satellite autonomous satellite orbit prediction method
  • On-satellite autonomous satellite orbit prediction method

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[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention, and further details will be given.

[0029] Such as image 3 As shown, the present invention provides an on-board autonomous satellite orbit prediction method, which mainly adopts the idea of ​​segmented multi-initial value and segment interval prediction, thereby reducing the running time of the prediction algorithm and improving the accuracy of the prediction. At the ground end, that is, the ground control system predicts the satellite orbit parameters through precise algorithms, and injects multiple initial precise orbit parameters into the satellite at one time ( figure 2 Middle: Inject the initial time at time A and the initial orbit parameters including stages 1 to 4), and the onboard control system uses the simplified orbit prediction algorithm to calculate th...

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Abstract

The invention discloses an on-satellite autonomous satellite orbit prediction method. Firstly, a user comprehensively considers prediction precision of an orbit and the acceptable running time of an actual project and presets an orbit prediction period and segment time intervals, and a ground control system performs precise prediction on orbit prediction requirements proposed by the user to generate all segment initial orbital parameters in the orbit prediction period; secondly, the ground control system inputs the generated segment initial orbital parameters into an on-satellite control system sequentially in accordance with the preset segment time intervals as the input of the on-satellite control system autonomous satellite orbit prediction; and finally, the on-satellite control systemperforms on-satellite autonomous orbit prediction of based on the segment initial orbital parameters. Based on satellite-ground cooperation, the high computing power of the ground is effectively exerted. The operation time of an on-satellite autonomous satellite orbit prediction algorithm is reduced. Engineering practice precision of orbit prediction is balanced.

Description

technical field [0001] The invention belongs to the technical field of aerospace orbit dynamics, and relates to an on-board orbit prediction method that takes into account both satellite orbit accuracy and orbit calculation running time. Background technique [0002] Orbit prediction refers to predicting the position and velocity of the satellite in the future according to the kinematic differential equation of the satellite on the premise of knowing the current state of the satellite. Orbit prediction plays an important role in satellite navigation, satellite measurement and control mission planning, etc. At present, the orbit calculation of low-orbit satellites in my country generally uses the quasi-average root method that considers the main harmonic items of the earth's non-gravitational field. At the same time, the long-term effect of the semi-major axis caused by the influence of atmospheric perturbation is considered in the injection parameters. This method It has bee...

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Application Information

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IPC IPC(8): G01C21/24
CPCG01C21/24
Inventor 常中祥徐雪仁张少丁贺雷鹏谢廷峰
Owner 中科天智运控(深圳)科技有限公司
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