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Beidou tri-band network RTK ambiguity single epoch fixing method accompanied by wide-lane constraint

An ambiguity and single epoch technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problems of model ill-conditioning, multi-system network RTK, etc.

Inactive Publication Date: 2014-04-16
SOUTHEAST UNIV
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Problems solved by technology

This method makes the model more rigorous by modeling the influence of atmospheric errors as parameters. However, due to the introduction of new parameters, there is a correlation between the newly introduced parameters and the ambiguity, resulting in serious ill-conditioned models. How to effectively improve The ill-conditioned nature of the model requires further study
[0007] To sum up, the network RTK based on GPS system has been widely used, and the network RTK technology of GPS / GLONASS system integration is relatively mature, but the network RTK based on Beidou or the multi-system network RTK of Beidou and GPS / GLONASS system integration has not there is too much research

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  • Beidou tri-band network RTK ambiguity single epoch fixing method accompanied by wide-lane constraint
  • Beidou tri-band network RTK ambiguity single epoch fixing method accompanied by wide-lane constraint
  • Beidou tri-band network RTK ambiguity single epoch fixing method accompanied by wide-lane constraint

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Embodiment Construction

[0040] The present invention will be further explained below in conjunction with the accompanying drawings.

[0041] A single-epoch ambiguity fixing method for RTK ambiguity of Beidou tri-frequency network with wide-lane constraints, comprising the following steps:

[0042] Step (1), performing cycle slip detection and repair preprocessing;

[0043] Step (2), establishing a double-difference observation model based on reference stations;

[0044] Step (3), using the combined solution of the carrier wave and the pseudorange to calculate the integer ambiguities of the two ultra-wide lanes;

[0045]Step (4), the basic ambiguity N corresponding to the B1, B2, B3 carrier frequency bands of BDS is solved in a single epoch 1 , N 2 , N 3 :

[0046] First, combine the two equations of the ultra-wide lane, the two equations of the ionosphere-free combination and the two equations of the geometry-free combination to solve the three ambiguity parameters; Carrier frequency band basic...

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Abstract

The invention discloses a Beidou tri-band network RTK ambiguity single epoch fixing method accompanied by wide-lane constraint. The method comprises steps of utilizing a combined single epoch of a carrier wave and a pseudo range to resolve two super-wide-lane ambiguity values of whole cycles of Beidou, performing simultaneity on two equations free of ionized layer combination and two equations free of geometric combination, and resolving three ambiguity parameters through third-kind six equations. By reasonably weighing the third-kind equations, Beidou tri-band basic ambiguity N1, N2 and N3 can be resolved in a single epoch mode. By means of the method, accuracy and efficiency on fast resolving of Beidou ambiguity are increased remarkably.

Description

technical field [0001] The invention relates to the RTK double-difference ambiguity calculation of the Beidou triple-frequency network, in particular to a single-epoch fixing method for the triple-frequency double-difference ambiguity. Background technique [0002] In order to break the current global positioning system monopoly of the United States and Russia, China is building a fully functional, open and compatible Beidou satellite navigation system (BDS). All satellites of the BDS system have triple-frequency functions, and it is the only satellite navigation system that works on all three frequencies. [0003] Network RTK, also known as multi-reference station RTK, is a new generation of real-time dynamic positioning technology developed on the basis of conventional RTK, Internet, wireless communication, computer network management and other technologies in recent years. The data of the entire reference station network is uniformly calculated by the data processing cen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 潘树国王胜利高成发时小飞
Owner SOUTHEAST UNIV
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