National benchmark controlled local time standard generating system and method

Abstract

The invention provides a national benchmark controlled local time standard generating system and method and belongs to the field of time frequency calibration. The national benchmark controlled local time standard generating system comprises a GSP (global position system) receiver, a time-interval counter, a local atomic clock and a computer; the GSP receiver and the time-interval counter are respectively connected with the computer; the GSP receiver and the local atomic clock are respectively connected with the time-interval counter; the time-interval counter takes a 1pps (pulse per second) signal outputted by the local atomic clock as a door opening pulse and a 1pps signal outputted by the GSP receiver as a door closing pulse, the difference value between the two pulses per second is measured to be the time-interval measurement value; the computer generates a local standard format file by the aid of the different value and information acquired by the GSP receiver; the local standard format file and a standard file generated according to national standard are then compared to generate local standard time.

Description

technical field [0001] The invention belongs to the field of time-frequency calibration, and in particular relates to a system and method for generating a local time standard controlled by a national standard. Background technique [0002] Time is one of the seven basic physical quantities in the International System of Units, and it is the physical quantity with the highest accuracy among all physical quantities at present. The applications of time frequency range from major scientific experiments to daily life consumption, and their uses are very wide. With the rapid development of the satellite navigation industry, the demand for testing of navigation-related products continues to expand. The accuracy and stability of navigation products and equipment are based on the accurate time value of the satellite receiving module, so the accurate time value of the satellite receiving module is the basis for ensuring the accuracy and reliability of navigation equipment data. The ...

AI Technical Summary

Problems solved by technology

At present, the GPS common-view technology has developed quite maturely, but domestically, the common-view method has not yet been used to trace the driving time scale of the national benchmark, while the foreign GPS common-view technology is limited to the comparison between the national and national time-frequency benchmarks. There is no related application in value transfer, so it is impossible to transfer real-time time value to satellite navigation products

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