GNSS timing receiver system delay calibration method based on time-guard laboratory resource

A technology of system delay and calibration method, which is applied in the field of GNSS timing receiver system delay calibration based on punctual laboratory resources, can solve the problems of few reference receiver resources and inconvenient use, and achieve low cost, simple implementation steps, and easy The effect of the operation

Active Publication Date: 2019-04-16
北京跟踪与通信技术研究所 +2
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Problems solved by technology

The delay of the reference receiver will change with time, and it needs to be recalibrated at a certa

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  • GNSS timing receiver system delay calibration method based on time-guard laboratory resource
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  • GNSS timing receiver system delay calibration method based on time-guard laboratory resource

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0024] In this embodiment, the data UTC(NTSC)-GPST of the time difference monitoring platform of the National Time Service Center of the Chinese Academy of Sciences is used as a reference to illustrate the calibration process of the GPS timing receiver. The delay of the GPS timing receiver system to be calibrated is figure 1 T to R delay shown in.

[0025] Specifically, the calibration is achieved through the following steps:

[0026] Step 1: Place the GPS timing receiver to be calibrated at the National Time Service Center of the Chinese Academy of Sciences. The receiver uses the UTC (NTSC) 10MHz frequency signal and 1PPS time signal maintained by the Timekeeping Laboratory as reference inputs, and the antenna of the receiver to be calibrated is placed on On the foundation pier with accurate...

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Abstract

The invention provides a GNSS timing receiver system delay calibration method based on a time-guard laboratory resource. A satellite navigation system monitored by a time-guard laboratory and a physical implementation UTC in the coordination world are utilized (K), and a high-precision time-frequency signal kept in the time-guard laboratory, and the delay of a GNSS timing receiver system can be calibrated. Compared with a receiver delay calibration method based on the signal analog source, the method is low in cost and does not need additional auxiliary calibration equipment, the calibration step is simple and easy to operate, and the calibration precision is equivalent to that of a receiver delay calibration method based on the signal simulation source. Compared with a relative delay calibration method of the GNSS timing receiver, the method does not need to be implemented by an internal delay known reference receiver, and the method has universality.

Description

Technical field [0001] The invention relates to a delay calibration method for a GNSS timing receiver system based on punctual laboratory resources. The method uses the physics of the satellite navigation system monitored by the punctual laboratory and the coordinated universal time to realize the traceability deviation or time difference between UTC(k) The monitoring platform data and the high-precision time-frequency signal maintained by the punctual laboratory can realize the calibration of the GNSS timing receiver system delay. The calibration steps are simple and easy to operate, and there are no special requirements for the calibration personnel. The calibration accuracy is equivalent to the traditional delay calibration method of the receiver based on the signal simulator. Background technique [0002] The GNSS timing receiver system used for timing must accurately measure its delay before it is used, otherwise the timing result will have a certain deviation, resulting in ...

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/235
Inventor 刘莹焦文海许龙霞李孝辉
Owner 北京跟踪与通信技术研究所
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