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Quick resolving method for integer ambiguity of BDS satellite carrier phase

A technology of integer ambiguity and carrier phase, which is applied in the field of satellite positioning system and positioning measurement, which can solve the low efficiency of BDS integer ambiguity solution, which is disadvantageous to the rapid determination of BDS carrier phase integer ambiguity, and the difficulty in solving GEO satellites. Carrier phase integer ambiguity and other issues

Active Publication Date: 2016-04-20
LIAONING TECHNICAL UNIVERSITY
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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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  • Quick resolving method for integer ambiguity of BDS satellite carrier phase
  • Quick resolving method for integer ambiguity of BDS satellite carrier phase
  • Quick resolving method for integer ambiguity of BDS satellite carrier phase

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Embodiment Construction

[0043] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] A fast solution method for BDS satellite carrier phase integer ambiguity, such as figure 1 shown, including the following steps:

[0045] Step 1. Using the B1 frequency double-difference pseudo-range observation value and the B3 frequency double-difference pseudo-range observation value of the IGSO satellite and the MEO satellite, calculate the B1 frequency double-difference carrier phase and the B3 frequency double-difference carrier phase of the IGSO satellite and the MEO satellite Full-circle ambiguity of wide lane;

[0046] Such as figure 2 As shown, the specific steps are as follows:

[0047] Step 1-1, the BDS satellite broadcasts the three-frequency non-difference carrier phase observation data and the three-frequency non-difference pseudorange observation data to the BDS station receiver;

[0048] The non-diff...

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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...

Claims

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Application Information

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IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 祝会忠高猛徐宗秋徐爱功葛茂荣徐彦田
Owner LIAONING TECHNICAL UNIVERSITY
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