Title :
A method of high precision time transfer based on DVB-S
Author :
Xiang Yu ; Hua Yu ; Xu Linsheng ; Shi Shaohua
Author_Institution :
Nat. Time Service Center, Xi´an, China
Abstract :
A method of transferring high precise time based on the satellite digital TV broadcasting system (DVB-S) is presented in this paper. PCR (Program Clock Reference) in the signal of TV is considered as the Time Synchronization Flag, precise timestamp captured by PCR is real-time recorded in both transmitting segment and user segment, so time in both sides will be synchronized roughly. Then the period of signal from transmitting segment to user segment is calculated by Precise Satellite Ephemeris, and the time will be synchronized precisely. The experimental result showed the method is feasible, and the RMS<; 100ns.
Keywords :
clocks; digital television; direct broadcasting by satellite; DVB-S; PCR; high precision time transfer; program clock reference; satellite digital TV broadcasting system; Delays; Receivers; Satellite broadcasting; Satellites; Synchronization; TV; DVB-S; PCR; satellite digital TV; signal transmission delay; time service;
Conference_Titel :
European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013 Joint
Conference_Location :
Prague
DOI :
10.1109/EFTF-IFC.2013.6702139
