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Embedded long distance real time GPS common view time comparison method

A time comparison and long-distance technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., to achieve strong engineering realizability, solve time synchronization problems between different stations, and solve modular problems

Inactive Publication Date: 2018-10-19
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of embedded long-distance real-time GPS common-view time comparison, and the purpose is to solve the problem that real-time time synchronization can be completed between different stations thousands of kilometers apart

Method used

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  • Embedded long distance real time GPS common view time comparison method
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  • Embedded long distance real time GPS common view time comparison method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as figure 1 As shown, the embedded long-distance real-time GPS common-view time comparison method is based on the FPGA prototype board. The core components of the entire system are DSP and FPGA; the GPS common-view time comparison part is embedded in the DSP to realize real-time time comparison. For processing, the main tasks include GPS common view and stand-alone collaboration, without increasing the computational complexity and space complexity, to ensure the stable output of the clock difference results, including the following steps:

[0027] (1) Real-time data analysis: Receive GPS real-time data streams, analyze data from different stations to obtain original observation data and message data, and store them in categories at the same time;

[0028] (2) Data preprocessing: Gross error elimination, cycle slip detection and repair, and ...

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Abstract

The invention aims to solve the long distance based GPS common view time comparison technical demands, and discloses an embedded long distance real time GPS common view time comparison method; based on a FPGA prototype board card, the method can embed a GPS common view time comparison algorithm into a DSP, thus realizing time comparison in real time; the main task contains GPS common view and single machine synergy; the method can ensure to stably output a clock error result without increasing operation complexity and space complexity, thus realizing inter-station time synchronization within thousands of kilometers.

Description

technical field [0001] The invention relates to the time transfer technology in satellite positioning and navigation, in particular to the aspect of embedded long-distance real-time GPS common-view time comparison. Background technique [0002] Time unification as a space carrier / distributed application system works together, and high-precision relative measurement is the basic condition for time unification. It is an important research content of modern national defense high-precision measurement and global integration, and affects aerospace, communications, transportation, and high-speed digital networks. In the fields of synchronization and other fields, how to realize real-time time synchronization of different nodes in a large-scale range is an important guarantee for the unification of modern time references and time maintenance. [0003] As an important technology for unified time reference, GPS common-view time comparison has low construction cost and simple implemen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/05
CPCG01S19/05
Inventor 张京奎盛传贞应俊俊杨开伟王永杰王永刚郭晓松
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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