GPS, GLONASS and BDS unified solution positioning method

A positioning method and solution technology, applied in the positioning field of GPS, GLONASS and BDS joint solution, can solve the problem of less combination research and so on

Active Publication Date: 2014-07-23
SHANGHAI HUACE NAVIGATION TECH
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Problems solved by technology

[0004] However, the above studies are all based on the combination of GPS and GLONASS, but there are few studies on BDS, especially the combination of GPS, GLONASS and BDS

Method used

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  • GPS, GLONASS and BDS unified solution positioning method
  • GPS, GLONASS and BDS unified solution positioning method
  • GPS, GLONASS and BDS unified solution positioning method

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Embodiment Construction

[0089] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0090] Static relative positioning method of GPS / GLONASS / BDS Samsung joint solution, such as figure 1 As shown, the specific steps are as follows:

[0091] The first step is to perform GPS / GLONASS / BDS data preprocessing, which may specifically include the following sub-steps:

[0092] Step 1.1: Unify the GNSS space-time reference and unify it as the GPS space-time reference;

[0093] Step 1.2: Observation linearization and error model correction, mainly including station coordinate tidal correction, antenna phase center deviation correction, satellite clock error correction, earth rotation error correction, satellite-ground geometric distance calculation, and tropospheric delay correction; among them, ionospheric delay And the tropospheric delay is the main error source, the correction method is as follow...

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Abstract

The invention relates to a GPS, GLONASS and BDS unified solution positioning method. The method includes the steps of conducting static relative positioning based on GPS, GLONASS and BDS three-satellite unified solution, and conducting dynamic relative positioning based on GPS, GLONASS and BDS three-satellite unified solution. By means of the GPS, GLONASS and BDS unified solution positioning method, solution is achieved through three-satellite unification, positioning accuracy and positioning reliability under the severe observation environment are improved, and initialization time is shortened; the partial ambiguity fixing strategies, namely, the partial ambiguity fixing method oriented to statistic relative positioning and based on the RMS and the partial ambiguity fixing method oriented to dynamic relative positioning and based on the coordinated factor matrix, are adopted, and therefore the success rate of ambiguity fixing can be increased, and accuracy and reliability of baseline solution can be improved; a unified observation model is set up, the method can be easily expanded and used, and the method has a wider application range.

Description

technical field [0001] The invention relates to the field of global navigation satellite systems, in particular to the field of joint positioning of global navigation satellite systems, and specifically refers to a positioning method for joint calculation of GPS, GLONASS and BDS. Background technique [0002] Beidou Navigation Satellite System (BeiDou Navigation Satellite System, English abbreviation BDS) is a global satellite navigation system that China is implementing independently, independently operated, and compatible with other satellite navigation systems in the world. At present, it has formed the US GPS (Global Position System, Global Positioning System), Russian GLONASS (Glonass Satellite Navigation System), China's BDS three mature satellite navigation systems coexist. Therefore, it is of great practical significance to study the combined high-precision positioning among the three major systems of GPS, GLONASS and BDS. [0003] Many scholars at home and abroad h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/48G01S19/07
CPCG01S19/07G01S19/425G01S19/44
Inventor 沈雪峰王杰俊何伟孙慧敏唐尔辉
Owner SHANGHAI HUACE NAVIGATION TECH
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