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Network time server calibration method and device based on satellite common view

A technology of network time and calibration method, applied in measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of inaccurate calibration results of time equipment, no unified traceability standard, no remote traceability, etc., so as to solve the problem of traceability. Sexual problems, significant effects, simple effects

Pending Publication Date: 2021-03-23
北京卓越航导科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the calibration and testing of time-frequency equipment is still based on traceability to GPS or Beidou, and there is no unified traceability standard to UTC(k); the testing methods are also limited to local testing and LAN testing, and cannot be networked in production and applications Testing, Cloud Metering
These factors may lead to inaccurate and unreliable calibration results of the time equipment
The time accuracy of many network time servers is measured using GPS or Beidou timing benchmarks. Not only is the accuracy poor, but it cannot be directly traced to the national time frequency measurement benchmark, and it does not have the feature of remote traceability.
[0004] According to the above problems, a method and device for solving the problems of high precision, remote traceability and remote calibration of the network time server existing in the current technology are proposed

Method used

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  • Network time server calibration method and device based on satellite common view
  • Network time server calibration method and device based on satellite common view
  • Network time server calibration method and device based on satellite common view

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Embodiment 1

[0039] Please also refer to Figure 1 to Figure 5 Now, a specific implementation of a method and device for calibrating a network time server based on satellite common viewing provided by the present invention will be described. The specific steps of the network time server calibration method and device based on satellite common viewing include:

[0040] S1. Obtain the satellite common-view data (reference terminal) of the national time-frequency measurement benchmark through the network or Beidou communication, and obtain the satellite common-view data (client end) of the local clock through the satellite common-view receiver;

[0041] S2. According to the obtained common-view data and based on the common-view principle of GNSS (Global Navigation Satellite System), the local clock is adjusted and controlled, so that the local clock is locked to the standard time, and the remote traceability of time and frequency is realized. Remotely traceable to the measurement standard UTC...

Embodiment 2

[0062] Please also refer to Figure 1 to Figure 5 Now, a specific implementation of a network time server calibration device based on satellite common viewing provided by the present invention will be described. This kind of network time server calibration device based on satellite common viewing includes satellite common viewing receiver, local clock, FPGA (Field Programmable Gate Array Field Programmable Logic Gate Array) processor and time synchronization processing module, wherein satellite common viewing receiver uses It is used to perform common-view observation with the satellite common-view receiver of the national time-frequency measurement standard; the local clock is electrically connected to the satellite common-view receiver; the FPGA processor is electrically connected to the satellite common-view receiver and the local clock respectively; the time synchronization processing module is connected to the FPGA The processor is connected and used for data transmission...

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Abstract

The invention discloses a network time server calibration method based on satellite common view, which comprises the following steps of: firstly, remotely tracing a local clock to a national time frequency measurement reference by utilizing satellite common view, and then remotely accessing a network time server to be tested by taking the local clock as a reference and a client of network time service, time service precision of the network time server is measured through time service methods of different network time servers, and calibration is carried out. The invention also discloses a network time server calibration device based on satellite common view, which remotely traces to the national standard time through satellite common view and directly or remotely calibrates the network timeserver. According to the invention, remote calibration of the network time server is realized based on remote tracing of satellite common-view time, the problems of high precision, remote tracing andremote calibration of the network time server are solved, the structure is simple, the action effect is remarkable, and the method is suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of time calibration, in particular to a method and device for calibrating a network time server based on satellite common viewing. Background technique [0002] Accurate time is becoming more and more important in the current new infrastructure, such as: 5G communication, Internet of Things, big data, and national defense construction. Therefore, remote traceability, remote comparison, and remote calibration of time and frequency are particularly urgent and important. [0003] At present, the calibration and testing of time-frequency equipment is still based on traceability to GPS or Beidou, and there is no unified traceability standard to UTC(k); the testing methods are also limited to local testing and LAN testing, and cannot be networked in production and applications Testing, cloud metering. These factors may lead to inaccurate and unreliable calibration results of time equipment. The time accuracy of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04B7/185G01S19/25G01S19/23
CPCH04J3/0661H04B7/18513H04B7/18519G01S19/256G01S19/235Y02D30/70
Inventor 张思德
Owner 北京卓越航导科技有限责任公司
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