Transponder for transmitting navigation satellite time service information into low frequency time-code time service signal

Abstract

Provided is a transponder for transmitting navigation satellite time service information into a low frequency time-code time service signal. The device for providing a time service signal to an electric wave time service timekeeper comprises a low frequency time-code generating circuit, a carrier wave signal generating circuit, a modulator circuit, a power amplification circuit, a power supply, an outputting and sending unit, and the like, and is characterized in that the transponder is provided with an RS485 interface device, can receive a serial signal which is transmitted by a "navigation satellite time service information transponder", accords with an RS485 protocol and contains the satellite time service information, can obtain a 1 pulse per second (PPS) embedded in the signal and accurate time, and enables the sent low frequency time-code time service signal to have very high time service precision. According to the transponder provided by the invention, the electric wave time service timekeeper also can be used in the places or occasions that cannot receive the electric wave time service signal originally or stably. The outputting and sending unit of the transponder is formed by connecting a plurality of basic sending units in parallel, and one transponder can supply a signal source to many electric wave time service timekeepers.

Description

technical field [0001] The invention relates to a device for forwarding navigation satellite timing information into low-frequency time code timing signals, in particular to a device for receiving navigation satellite timing information forwarded by a "navigation satellite timing information transponder" and forwarding it into low-frequency time code A timing signal device belongs to the technical field of timing. Background technique [0002] Over the past two decades, clocks that receive low-frequency time code timing signals, commonly known as radio-controlled clocks, have been widely used in countries all over the world because of their accurate travel time, automatic calibration every day, and no cumulative error. In recent years, radio-controlled clocks have also become popular in our country. The low-frequency time code timing signal uses long wave as the carrier, and is usually called radio wave timing signal. Several high-power time service broadcasting stations i...

AI Technical Summary

Problems solved by technology

These methods only slightly improved the receiving situation, but did not satisfactorily solve the above-mentioned problem of being unable to receive or difficult to receive radio time service signals, so there are still many places or places in China that still do not have the conditions for using radio time clocks.

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