A time-frequency calibration method and service system between long-distance time-frequency laboratories

Abstract

The invention relates to a time frequency calibration method and a time frequency calibration service system between long distance time frequency laboratories. The method comprises steps that: time difference of at least one data type between a standard time source of a center station and a GNSS satellite clock is measured and stored; at least one data type of the GNSS satellite data which is observed at the center station is acquired and stored in real time; time difference of at least one data type between a time source of a client station and the GNSS satellite clock is measured and stored, and the data type of the client station corresponds to the data type of the center station; a calibration request from the client station is responded, common-view contrast or carrier wave phase contrast between the contrast data from the client station and the contrast data from the center station are carried out by a calibration system based on the satellite data, and a contrast result is returned; the time source of the client station is calibrated according to the returned contrast result. The method and the system facilitate effective utilization of frequency standard in the time frequency laboratories, further guarantees accuracy and reliability of magnitude transmission and improves metering and detecting quality of the time frequency.

Description

technical field [0001] The invention relates to a time-frequency calibration method, in particular to a time-frequency calibration method and a service system between long-distance time-frequency laboratories. Background technique [0002] The measurement stations of the national defense military system, especially the frequency measurement standard sources established by the enterprise group companies and the national defense calibration laboratories of the provinces, municipalities and municipalities directly under the central government: rubidium atomic frequency standard, cesium atomic frequency standard or hydrogen atomic frequency standard according to the national metrology verification regulations It is stipulated that verification is required once a year, and atomic frequency standards across the country must be sent to higher-level metrological technical institutions for verification. At present, most metering stations use the method of carrying bells for inspectio...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a time-frequency calibration method and service system between long-distance time-frequency laboratories to solve the problems of difficulty and low efficiency in sending atomic frequency standards

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