A Method for Determining Integer Ambiguity of Three-frequency Carrier Phase in BDS Reference Station

Abstract

The invention discloses a method for determining the integer ambiguity of the three-frequency carrier phase of a BDS reference station, which belongs to the technical field of satellite positioning systems and positioning measurement. Accurate determination of the integer ambiguity of the three-frequency carrier phase observation value; the method of the present invention can determine the integer ambiguity of the three-frequency carrier phase of the BDS reference station network in a single epoch, overcome the slow change of the geometric configuration of the BDS observation satellite, and not It is beneficial to the real-time and rapid determination of the BDS carrier phase ambiguity of the reference station network; at the same time, it does not consider whether there is a cycle slip in the carrier phase observation data of the BDS reference station, and avoids the work of cycle slip detection and processing of the observation data. The satellite is used as the object to determine the ambiguity of the whole cycle, and there is no need to solve the carrier phase observation equations of the BDS reference station network, so that the calculation amount of the carrier phase ambiguity determination of the BDS reference station network is small.

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 determining the ambiguity of the triple-frequency carrier phase of a BDS reference station. 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, the BDS system standard positioning service can only meet the requirements of low-precision navigation and positioning; using the BDS reference station network to provide the BDS regional error correction model or correction number can realize the error correction of BDS users within the coverage of the reference station network to eliminate Or...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the shortcomings of the prior art, the present invention proposes a method for determining the ambiguity of the three-frequency carrier phase of the BDS reference station, which uses BDS's unique full-constellation three-frequency carrier phase observation data to achieve the carrier phase adjustment of the BDS reference station network. Accurate determination of the cycle ambiguity overcomes the problem that the geometric configuration of the BDS observation satellite changes slowly, which is not conducive to the real-time and rapid determination of the carrier phase cycle ambiguity of the BDS reference station network, and avoids the work of cycle-slip detection and processing of observation data, The purpose of reducing the workload of ambiguity resolution in BDS reference station network

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