【摘要】 为了降低当前无缆地震仪的功耗,并且提高其同步采集的精度,文中采用定时开启GPS,利用GPS输出的1 PPS脉冲校准采集站内置32.768 MHz恒温晶振,将校正输出的秒分频信号作为无缆地震仪采集站的同步时标。同时,利用GPS接收机输出的UTC信息校正采集站内部时钟,从而达到低功耗校钟的目的。更多还原

【Abstract】 To reduce the power consumption and improve the synchronous acquisition accuracy of the current cable-less seismograph. This paper opened GPS regularly,used the GPS 1PPS output to correct 32. 768 MHz OCXO in acquisition station. The corrected outputs of the divided second signals served as the synchronization time scale for acquisition stations of cable-less seismograph. The universal time coordinated information from GPS receiver was used to correct the internal clock of acquisition station.The system achieved the purpose of correcting the clock in low-power consumption.更多还原