Method for calculating broadcast ephemeris and clock error parameters of regional navigation satellite system

Abstract

The invention relates to the technical field of satellite navigation, and provides a method for calculating broadcast ephemeris and clock error parameters of a regional navigation satellite system, which comprises the following steps of: observing in an L wave band to obtain satellite-ground two-way time synchronization observation data and pseudo-range phase observation data of the L wave band; preprocessing and comparing the satellite-ground two-way time synchronization observation data to calculate a satellite-ground two-way measurement clock error; performing data preprocessing on the pseudo-range phase observation data, and deducting the satellite-ground bidirectional measurement clock error to obtain clock error-free distance measurement data; carrying out multi-satellite statistical orbit determination based on the distance measurement data without the clock error so as to obtain orbit parameters; determining a broadcast ephemeris of a regional navigation satellite system by using the satellite initial orbit and solar radiation pressure empirical parameters; and deducting a constant deviation from the satellite-ground two-way measured clock error, and forecasting the clock error to determine the clock error of the regional navigation satellite system.

Description

technical field [0001] The present invention generally relates to the technical field of satellite navigation. Specifically, the present invention relates to a method for calculating broadcast ephemeris and clock error parameters of a regional navigation satellite system. Background technique [0002] Under the circumstances that my country's current economic foundation is weak and technology accumulation is insufficient, and it is difficult to directly construct a global navigation satellite system, it is possible to deploy GEO satellites (geostationary orbit satellites), IGSO satellites (inclined geosynchronous orbit satellites) and MEO satellites by launching a small number of satellites. (Satellites in the Earth’s middle circular orbit) form a mixed constellation to construct a regional satellite navigation system to provide land, sea and air navigation and positioning services for the military and civilians in the region, so as to meet the needs of national security, eco...

AI Technical Summary

Problems solved by technology

[0011] In order to at least partially solve the problems in the prior art that the satellite clock error parameters have constant deviations and the satellite orbit accuracy is low and the satellite orbit accuracy is significantly attenuated as the satellite enters and exits the earth shadow, the present invention proposes a broadcasting system for regional navigation satellite systems. Calculation method of ephemeris and clock error parameters, including:

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