GNSS (Global Navigation Satellite System) high-precision augmentation system-based wide-area precision timing system

A technology of enhanced system and timing system, applied in the field of global navigation satellite system, can solve the problems of non-applicability, no time scale output, and terminal time calibration, etc., and achieve the effect of cost saving

Active Publication Date: 2017-01-04
武汉羲和科技有限公司 +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In many applications, there are some technical deficiencies in atomic clock timing: First, atomic clocks can only provide high-precision frequency output, but no time scale output. tame
This method can only achieve time synchronization between the rover and the base station, but cannot perform absolute time calibration on the terminal, so it is only a time synchronization system rather than a timing system in the strict sense
In addition, the relative time synchronization method requires two receivers to view the same satellite, so it is limited by the length of the baseline. It is a regional time synchronization system and is not suitable for wide-area timing.

Method used

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  • GNSS (Global Navigation Satellite System) high-precision augmentation system-based wide-area precision timing system
  • GNSS (Global Navigation Satellite System) high-precision augmentation system-based wide-area precision timing system

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] See figure 1 , the wide-area precision timing system shown includes three parts: an infrastructure system 101, a reference service station system 102 and a user terminal system 103, wherein the infrastructure system 101 is used to receive satellite signals and provide wide-area differential data, and the reference service station system 102 is used to provide regional differential data and response services, and user terminal system 103 is used to provide high-precision time scale.

[0032] The infrastructure system 101 further includes a ground reference station subsystem 104, a data processing subsystem 106, and a data dissemination subsystem 108, and the ground reference station subsystem 104, the data processing subsystem 106, and the data dissemination subsystem 108 are sequentially connected by signals. The ground ...

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Abstract

The invention discloses a GNSS (Global Navigation Satellite System) high-precision augmentation system-based wide-area precision timing system. The system comprises an infrastructure system, a reference service station system and a user terminal system, wherein the infrastructure system is used for receiving satellite signals and providing wide-area differential data, the reference service station system is used for providing regional differential data and response services, and the user terminal system is used for providing high-accuracy time marks. With the system of the invention adopted, wider-range, higher-precision, high-convenience and lower-cost absolute time output can be realized in a whole country or even in the whole world.

Description

technical field [0001] The invention belongs to the field of Global Navigation Satellite System (GNSS), and in particular relates to a wide-area precision timing system based on a GNSS high-precision augmentation system. Background technique [0002] The Global Navigation Satellite System (GNSS) is a satellite-based radio positioning, navigation and timing system, mainly including the Global Positioning System (GPS) of the United States, the BeiDou System (BDS) of China, the Galileo of Europe, the Russian Grid GLONASS etc. GNSS broadcasts navigation signals through satellites, which can realize precise transmission of position and time, and has a wide range of applications in many fields. In the application field of time service / time synchronization, the GNSS receiver can use the radio signals broadcast by navigation satellites to correct the local clock, so that the time of the receiver is synchronized with the GNSS system time, achieving the purpose of time service or tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04R20/02G01S19/13
CPCG01S19/13G04R20/02
Inventor 施闯楼益栋郭文飞牛小骥江鹏
Owner 武汉羲和科技有限公司
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