A fast solution method for bds satellite carrier phase integer ambiguity

Abstract

A fast solution method for BDS satellite carrier phase integer ambiguity, including: calculating the wide-lane integer ambiguity of B1 frequency double-difference carrier phase and B3 frequency double-difference carrier phase of IGSO satellite and MEO satellite; using IGSO satellite and MEO The wide-lane integer ambiguity of the B1 frequency double-difference carrier phase and the B3 frequency double-difference carrier phase of the satellite is used to solve the wide-lane integer ambiguity of the B1 frequency double-difference carrier phase and the B3 frequency double-difference carrier phase of the GEO satellite; The wide-lane integer ambiguity of B1 frequency double-difference carrier phase and B3 frequency double-difference carrier phase of each satellite, calculate the B1 frequency double-difference carrier phase integer ambiguity, B2 frequency double-difference carrier phase integer ambiguity, B3 frequency double-difference carrier phase integer ambiguity, and then calculate the coordinates of the BDS station. The invention calculates the carrier phase wide-lane integer ambiguity of MEO satellites and IGSO satellites by using pseudo-range observation values, overcomes the influence of large pseudo-range observation noise of GEO satellites, and solves the key problem of high-precision and fast positioning of BDS.

Description

technical field [0001] The invention belongs to the technical field of satellite positioning system and positioning measurement, and in particular relates to a method for quickly resolving the ambiguity of the entire cycle of BDS satellite carrier phase. Background technique [0002] At present, the BeiDou Navigation Satellite System (BDS), which has independent intellectual property rights in my country, has officially provided navigation and positioning services to the Asia-Pacific region; due to the influence of various observation errors, the accuracy of the standard positioning services provided by the BDS system About 10m, BDS system standard positioning service uses pseudo-range observation value, which can only meet the requirements of low-precision navigation and positioning; using BDS carrier phase observation data, can realize high-precision real-time positioning of BDS station; if you need to use BDS carrier phase observation The data realizes the high-precision an...

AI Technical Summary

Problems solved by technology

Since the BDS system has just been established, and the GPS system is the most mature and stable satellite navigation and positioning system, the broadcast ephemeris satellite orbit accuracy of the BDS is inferior to the GPS system, especially the majority of the satellites in the BDS system are GEO satellites and IGSO satellites. , so that the processing method of the integer ambiguity of the GPS carrier phase observation value cannot well solve the problem of solving the BDS carrier phase integer ambiguity, especially for the fast and accurate determination of the BDS carrier phase integer ambiguity, the BDS integer The solution efficiency of the surrounding ambiguity is lower

[0004] The motion period of IGSO satellites in the BDS system is about 24 hours, and the GEO satellites are relatively stationary relative to the earth. In a short period of time for the real-time and fast resolution of the BDS carrier phase ambiguity, the BDS on-orbit working satellites observed by the station The change in geometric configuration is small; therefore, the geometric configuration of the observation satellites caused by the composition of the BDS satellite constellation (more GEO and IGSO satellites) is not good, which is not conducive to the rapid determination of the ambiguity of the BDS carrier phase cycle; and the pseudorange of the GEO satellite The observation noise is large, and it is difficult to solve the carrier phase integer ambiguity of the GEO satellite by using the pseudo-range observation value

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