Low frequency time code propagation delay correcting machine

Abstract

A low-frequency time-code spread delay corrector comprises a single-chip microcomputer system for controlling the whole machine; a time-code parallel interface circuit, an output end of which is connected with the single-chip microcomputer system; a second pulse delay, an input end of which is connected with the time-code parallel interface circuit and the single-chip microcomputer system; a serial transceiver, the input end of which is connected with the single-chip microcomputer system; a second pulse shaper, the input end of which is connected with the second pulse delay; and a line drive circuit, the input end of which is connected with the second pulse delay. When the low-frequency time-code spread delay corrector outdoors moves a receiver for receiving in a certain position, the impact of the strong interference noise can be avoided, and the receiver can normally receive and decode, thereby correcting the time information which is obtained after the time delay caused by the signal spread and has the precision of the millisecond level. Compared with the prior low-frequency time-code spread delay corrector, the low-frequency time-code spread delay corrector of the invention has the advantages of strong anti-interference ability, accurate correction of the spread delay and far code distance during the transportation, etc., so as to be applicable to e-government, e-commerce, transportation, power industry and other industries.

Description

technical field [0001] The invention belongs to the technical field of radio measurement, and in particular relates to a low-frequency time code propagation delay corrector. Background technique [0002] Today, with the rapid development of information technology, high-precision time synchronization is very important in emerging industries and important sectors of the national economy. Low-frequency time code timing technology has the most complete time information in land-based radio timing, and can be widely used in e-government, e-commerce, transportation, electric power and other technical fields. [0003] As we all know, low-frequency radio waves propagate in the form of ground waves and sky waves, and the signal propagation delay is related to the frequency of radio waves, propagation distance, atmospheric refraction coefficient, and characteristics of the ionosphere. In practical applications, it can be corrected with reference to the actual delay value to achieve mi...

AI Technical Summary

Problems solved by technology

At present, there is no cheap and easy-to-make low-frequency timecode propagation delay corrector

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