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GNSS observation station network original observation equation resolving method

A technology of observation equation and original observation data, applied in the field of satellite navigation, can solve the problem of not realizing the benchmark of phase deviation parameter phase deviation estimation, etc., and achieve the effect of good consistency

Pending Publication Date: 2022-02-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0003] However, when using the original observation equations to solve these enhanced information, the existing methods for the selection of phase deviation estimation benchmarks mainly rely on selecting the phase deviation corresponding to a single receiver or a single satellite as the benchmark for all estimates, and have not realized the All phase deviation parameters as a basis for phase deviation estimation

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  • GNSS observation station network original observation equation resolving method
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  • GNSS observation station network original observation equation resolving method

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Embodiment Construction

[0031] A method for solving original observation equations of a GNSS observation station network, comprising the following steps:

[0032] (1) Use the pseudorange and phase observation data of the GNSS single-system global or regional tracking station network, including the triple-frequency of the Beidou-2 system, the triple-frequency of the Beidou-3 system, the dual-frequency or triple-frequency of the GPS system, the dual-frequency of the GLONASS system, and Galileo System dual-frequency or triple-frequency or quadruple-frequency observation data.

[0033] (2) Construct the non-difference and non-combined original observation equation by using the pseudorange and phase observation values ​​of all station systems and frequencies in the tracking station network. The known satellite position and station coordinates are introduced into the observation equation, that is, the geometric distance from the satellite to the receiver is known. The parameters to be estimated include: tr...

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Abstract

The invention discloses a GNSS observation station network original observation equation resolving method, and belongs to the technical field of satellite navigation. According to the method, on the basis of multi-frequency-point pseudo-range and phase observation data of a global or regional GNSS tracking station network, a full-rank non-difference non-combination all-parameter estimation model is constructed by increasing constraint conditions, and unified estimation of positioning enhancement parameters such as receiver clock correction, satellite clock correction, troposphere delay, ionosphere delay and basic frequency satellite phase deviation is achieved; by endowing the to-be-estimated parameter with the weight, the reference of the parameter estimation value can be flexibly selected and adjusted, and the problem that the reference selection of the phase deviation estimation value is single when the original non-difference and non-combination observation equation is used for resolving is effectively solved. Parameters estimated by the method can be used as PPP-RTK high-precision positioning enhancement service, and can also be used for service requirements of traditional positioning modes such as PPP and RTK.

Description

technical field [0001] The invention relates to a method for solving the original observation equation of a GNSS observation station network, which belongs to the technical field of satellite navigation and can be used for solving the original (non-difference and non-combination) observation equation of the GNSS observation station network. Background technique [0002] The Global Navigation Satellite System (GNSS) was established to provide outdoor positioning, navigation and timing services. Today, real-time high-precision satellite navigation and positioning technologies include: real-time differential kinematic positioning (RTK), real-time precise single-point positioning (Real-TimePPP and Real-Time PPP-AR), real-time kinematic positioning based on a network of reference stations (network RTK) , and PPP-RTK technology, etc. The realization of real-time high-precision positioning technology not only depends on the corresponding algorithm, but also needs the support of a ...

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Application Information

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IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 陈永昌盛传贞张京奎蔚保国易卿武
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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