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High-precision GNSS ionosphere TEC observation value extraction method

An extraction method and observation value technology, applied in the field of high-precision GNSS ionospheric TEC observation value extraction, can solve problems such as low extraction accuracy of ionospheric TEC observation values, and achieve the effect of solving the low extraction accuracy

Inactive Publication Date: 2018-04-20
WUHAN UNIV
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Problems solved by technology

[0004] The embodiment of the present application solves the problem of low extraction accuracy of ionospheric TEC observations in the prior art by providing a high-precision GNSS ionospheric TEC observation value extraction method

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  • High-precision GNSS ionosphere TEC observation value extraction method
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  • High-precision GNSS ionosphere TEC observation value extraction method

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Embodiment Construction

[0053] The embodiment of the present application solves the problem of low extraction accuracy of the ionospheric TEC observation value in the prior art by providing a high-precision GNSS ionospheric TEC observation value extraction method.

[0054] The technical solution of the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0055] A high-precision GNSS ionospheric TEC observation value extraction method, using the original observation data of the GNSS observation network, combined with the high-precision orbit, clock error, and antenna information provided by the IGS, to carry out precise single station-by-station standard mode of the GNSS observation network. Point positioning calculation, fix the wide-lane ambiguity and narrow-lane ambiguity of the phase observation value, and substitute the fixed wide-lane integer ambiguity and narrow-lane integer ambiguity into the geometric distance-free phas...

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Abstract

The invention belongs to the technical field of GNSS data processing and ionosphere monitoring, and discloses a high-precision GNSS ionosphere TEC observation value extraction method. Precise single point positioning calculation of the station-by-station standard mode is performed on a GNSS observation network by using the original observation data of GNSS observation network through combination of the high-precision track, clock error and antenna information provided by the IGS, the wide lane ambiguity and the narrow lane ambiguity of the phase observation value are fixed and the fixed wide lane integer ambiguity and the narrow lane integer ambiguity are substituted in the no-geometric-distance phase combination observation value so as to extract the ionosphere TEC observation value. Theproblem of low extraction accuracy of the ionosphere TEC observation value in the prior art can be solved so that the ionosphere TEC observation values of different observation stations in the whole network are enabled to have great self-consistency and consistency, the influence of arc segment length and multipath error on the extraction result is low and thus the extraction accuracy of the ionosphere TEC observation value can be effectively enhanced.

Description

technical field [0001] The invention relates to the technical field of GNSS data processing and ionospheric monitoring, in particular to a high-precision GNSS ionospheric TEC observation value extraction method. Background technique [0002] GNSS (Global Navigation Satellite System) is a general term for various navigation satellite positioning systems, such as GPS, GLONASS, BDS, Galileo, etc. In addition to enabling navigation, positioning, and timing services, it also plays an important role in the field of atmospheric environment monitoring (such as the ionosphere). Using GNSS technology to monitor the ionosphere, compared with traditional ionosphere monitoring methods (ionospheric dipmeter, high-power scattering radar, laser radar, etc.), has a wide coverage, high retrieval accuracy, all-weather continuous monitoring and can measure more than 2000km The plasma layer electron content and other advantages. [0003] The accurate extraction of high-precision ionospheric TE...

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Application Information

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IPC IPC(8): G01S19/14G01S19/37
CPCG01S19/14G01S19/37
Inventor 任晓东张小红李星星袁勇强解为良
Owner WUHAN UNIV
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