Beidou Navigation Satellite Regional Orbit Determination Method Based on Multiple Co-located Receivers

Abstract

The invention provides a multiple parallel address receiver-based Beidou navigation satellite region orbit determination method. The method comprises the steps of aiming at tracking stations of a China regional network, selecting data of multiple receivers at each station, and generating a medium long reference line and an ultrashort reference line according to the principle of the maximal common view observed quantities; based on single difference data of the medium long reference line and the ultrashort reference line, generating dual difference data to perform primary satellite precise orbit determination, and obtaining an ambiguity floating point solution and an estimation parameter; tracking station coordinates, and adopting different methods to calculate carrier phase ambiguity for reference lines of different lengths; using the generated carrier phase ambiguity to re-perform parameter estimation to calculate a satellite orbit. The Beidou navigation satellite region orbit determination is carried out by using multiple receivers placed in a parallel-address mode, the calculation successful rate of the carrier phase ambiguity can be improved, the value of a carrier phase observation value in the Beidou navigation satellite region orbit determination is improved and the Beidou navigation satellite orbit determination precision is finally improved.

Description

technical field [0001] The invention relates to a method for regional orbit determination of Beidou navigation satellites, relates to the field of precise satellite orbit determination, and can significantly improve the accuracy of orbit determination of Beidou navigation satellites under the condition of regional station deployment. Background technique [0002] In view of the huge role of the satellite navigation system in the military, economic and political fields, our country is actively developing its own satellite navigation system. In 1994, the Beidou-1 satellite navigation system was officially launched. The system includes 3 satellites, all in geostationary orbit. Compared with the US GPS, Beidou-1 has a small coverage area, low positioning accuracy, and cannot be used on high-speed mobile platforms. In order to break through the limit on the number of users, improve the viability of the system, expand the coverage of the system, and achieve compatibility and int...

AI Technical Summary

Problems solved by technology

Compared with the uniform distribution of tracking stations around the world, domestic tracking stations have fewer observable arcs of Beidou satellites, which hinders the full arc tracking of satellites by tracking stations

In addition, although domestic tracking stations are evenly distributed, due to my country's vast territory, the distance between stations is far away, which is not conducive to double-difference ambiguity resolution, which reduces the success rate of carrier phase ambiguity resolution, which in turn affects high-precision carrier phase observation. Applied value of value

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