Navigation satellite orbit rapid recovery method based on short arc orbit determination and forecast

Abstract

The invention belongs to the technical field of navigation satellite precision orbit determination, and specifically relates to a navigation satellite orbit rapid recovery method based on short arc orbit determination and forecast. The navigation satellite orbit rapid recovery method based on short arc orbit determination and forecast includes the steps: through short arc orbit determination and short arc forecast, taking the distance from of the satellite at a reference epoch to the geocenter as the radial component, taking the distance from the satellite to the initial orbit plane as the secondary normal component, taking the third component defined according to the right hand rule of the coordinate system as the tangential component, taking the time rate of change of the radial component, the secondary normal component and the tangential component, and performing rapid recovery of the navigation satellite orbit through compatible user ephemeris calculation with an additional component correction value. The navigation satellite orbit rapid recovery method based on short arc orbit determination and forecast can realize seamless docking of the ephemeris solution method of the userbefore and after orbit control, can improve the accuracy of satellite orbit determination and forecast, can obtain the satellite precise orbit of the user application demand in a relatively short timeafter orbit control, and can make accurate forecast so as to enable the satellite to resume normal use and guarantee normal operation of the satellite system, and has important guiding significance for the technical field of navigation satellite orbit determination.

Description

technical field [0001] The invention belongs to the technical field of precise orbit determination of navigation satellites, in particular to a method for fast recovery of navigation satellite orbits based on short-arc orbit determination and prediction. Background technique [0002] Satellite orbit determination and forecasting, including precise orbit determination and forecasting of high-orbit satellites, is one of the basic issues of satellite geodesy. It is not only a basic theoretical issue, but also has an engineering background, and has important practical significance. General application satellites have specific requirements for their orbits. Due to the motion of the satellite, the orbit drifts. When the drift accumulates to a certain level, it will exceed the allowable range of orbit requirements. At this time, it is necessary to fine-tune the satellite orbit. Usually, the reaction thruster on the satellite is used to change the tangential, radial and subnormal (...

AI Technical Summary

Problems solved by technology

For surveying and navigation application satellites, it will mean that the satellite is not working properly for this period of time, that is, it is in an unavailable state

[0003] At present, after the orbit control of navigation satellites, the main method is to mark the orbit control satellite as unavailable, or at least several hours to several days of observation data accumulation to restore the orbit determination accuracy level that meets the accuracy requirements, which affects the overall availability of the system

Existing methods only focus on orbit determination and prediction accuracy, but lack the design of user-compatible algorithms. Some algorithms are not compatible with user algorithms during orbit control and non-orbit control periods, which affects the convenience of navigation users in applying ephemeris

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