地震仪器数据采集同步技术

“采集同步精度”反映了所采集的地震数据的真实性,影响地震资料的处理和解释,是当今分布式地震数据采集系统的一项重要技术指标。野外施工中,仪器中心记录单元通过有线或无线方式,管理着距其几百米到几千米范围内分布的地震数据采集单元,进行数据采集、回收和记录,而地震测线上的数十个甚至数百个采集单元的同步启动采集尤显重要。鉴于现有的相关技术资料较少,文章以SN388仪器为例,对有线遥测地震数据采集系统采用的“采集同步”技术进行了较全面的介绍,供设计人员参考。

Simultaneous data acquisition of seismograph

"Simultaneous acquisition precision" reflects the trueness of acquired seismic data that affects the processing and interpretation of seismic data and is an important technical index of distributed seismic data acquisition system. During field construction, the record unit of seismograph center manages seismic data acquisition units distributing from several hundreds to several thousands meters away from the center by wire or wireless mode and implements data acquisition, receiving and record, in which simultaneous start-up of dozens even hundreds of acquisition units on seismic line for data acquisition is very important. In view of less available relative technical materials, so the paper, taking SN388 seismograph as an example, comprehensively introduced "simultaneous acquisition" technique adopted by remote wire seismic data acquisition system, which give a reference to designer.