Quick resolving method for integer ambiguity of BDS satellite carrier phase

Abstract

A quick resolving method for integer ambiguity of a Beidou navigation satellite system (BDS) satellite carrier phase comprises the steps of calculating wide lane integer ambiguities of a B1 frequency double-difference carrier phase and a B3 frequency double-difference carrier phase of an IGSO satellite and a MEO satellite; by means of the wide lane integer ambiguities of the B1 frequency double-difference carrier phase and the B3 frequency double-difference carrier phase of the IGSO satellite and a MEO satellite, resolving the wide lane integer ambiguity of the B1 frequency double-difference carrier phase and the B3 frequency double-difference carrier phase of an GEO satellite; by means of the wide lane integer ambiguity of the B1 frequency double-difference carrier phase and the B3 frequency double-difference carrier phase of each satellite, calculating the B1 frequency double-difference carrier phase integer ambiguity, the B2 frequency double-difference carrier phase integer ambiguity and the B3 frequency double-difference carrier phase integer ambiguity of each satellite, and furthermore calculating out the coordinate of a BDS measuring station. According to the quick resolving method, a pseudo-range observed distance is used for calculating the wide lane integer ambiguities of the carrier phases of the MEO satellite and the IGSO satellite, overcoming an influence of relatively large pseudo-range observed noise of the GEO satellite, and settling a key problem of BDS high-precision quick positioning.

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 is 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 data to achieve The core issue of hi...

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 ...

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