Li C H,Teng Y T,Zhou J C,Hu X X,Wang X Z,Li X J,Wang Y S. 2022. Design on high-precision time-synchronization system for distributed seismic data acquisition. Acta Seismologica Sinica44(6):1111−1120. DOI: 10.11939/jass.20210124
Citation: Li C H,Teng Y T,Zhou J C,Hu X X,Wang X Z,Li X J,Wang Y S. 2022. Design on high-precision time-synchronization system for distributed seismic data acquisition. Acta Seismologica Sinica44(6):1111−1120. DOI: 10.11939/jass.20210124

Design on high-precision time-synchronization system for distributed seismic data acquisition

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  • Received Date: February 12, 2022
  • Revised Date: May 25, 2022
  • Available Online: October 24, 2022
  • Published Date: December 12, 2022
  • In order to solve the time-synchronization problem of distributed seismic data acquisition system, we designed a new high-precision time-synchronization technical system in this paper. In this system, a synchronous timing pulse was transmitted periodically during data communication. Through transmitting time measurement and its transmission delay time correction of synchronous timing pulse, high-precision multi-channel time synchronization was achieved in this technical system. And a time-synchronization technical system designed with high-speed programed chips was used to carry out the time-synchronous test. The result proves that the synchronous timing accuracy of time-synchronous system is better than 200 ns when the optical fiber is 2 km, which indicates that the time-synchronization system is stable and practical.
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