广州数字地震台IP传输质量分析

IP transfer signal quality analysis for Guangzhou Digital Seismic Station

概述广州数字地震台数据传输的现状和IP传输技术的应用。详细介绍了IPDataTerminal地震数据传输终端的功能和特点。分析了167天来广州台DDN传输与IP传输对比观测的结果,结果表明,DDN传输受天气影响较大,而IP传输波形误码率低,并受益于“断点续传”,使波形连续率逐步提高。对IP数据传输的质量进行了分析,并对将来用IP传输代替DDN传输提出了建议。

The current situation of data transmission and the application of IP transfer technique for Guangzhou Digital Seismic Station have been reviewed. The function and characteristics of seismographic data transmission terminal and IP Data Terminal device have introduced in detail.Comparison of signal transfer between through DDN and IP transfer technique during past 167 days at Guangzhou Digital Seismic Station has indicated that DDN transmit is influenced by weather, and IP transfer with low error code rate and benefit from the “breakpoint continue”,make continuous rate of waveform raise progressively. We have analyzed the IP signal quality,and suggested to replace the DDN transmission with IP transfer technique in future.