Generation of GPS Based Time Signal Outputs for Time Synchronization Application

Abstract

Many advanced microprocessor based systems like SCADA system, remote terminal units, protection relays, Sequence of event recorders (SER), digital fault recorders require precise timing for their proper working. In This paper a low cost Global Positioning System (GPS) based time synchronized system with various time signal output like 1 Pulse per Second (1 PPS), National Grid Technical Standard (NGTS) / T format output and National Marine Electronics Associations (NMEA) output is presented. Here T format and NMEA output is transmitted at the interval of one second, whereas NGTS output is transmitted at the interval of one minute. System is directly connected with the satellite through antenna. So it can give precise time from satellite’s atomic clock.