利用噪声功率谱密度的统计特征评价台站对主动源信号的接收效能  

Estimating the Receiving Efficiency of Stations by Using the Statistical Characteristics of Noise Power Spectral Densities on Active Source Signals

作　　者：李孝宾[1] 陈佳[1] 高琼[1] 叶泵[1] 龙志强 张云鹏[2] 杨军[1] LI Xiaobin;CHEN Jia;GAO Qiong;YE Beng;LONG Zhiqiang;ZHANG Yunpeng;YANG Jun(Western Yunnan Earthquake Prediction Study Area,China Earthquake Administration,Dali 671000,Yunnan,China;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)

机构地区：[1]中国地震局滇西地震预报实验场,云南大理671000 [2]中国地震局地球物理研究所地震观测与地球物理成像重点实验室,北京100081

出　　处：《地震研究》2017年第4期572-580,共9页Journal of Seismological Research

基　　金：国家自然科学基金资助项目(41474048);云南省地震局青年基金(201608);云南省陈颙院士工作站(2014IC007)共同资助

摘　　要：利用背景噪声的功率谱密度的统计特征,对宾川主动源周边接收台站1~10 Hz有效频带的噪声水平进行了分析。结果表明:较好的台站观测条件和观测环境可以大大提高气枪信号的记录质量,通过建立和维护高质量的观测台站,可以减少获取高信噪比的气枪信号的叠加次数,也可以在同等叠加次数下获取更远的传播距离。We analysis the noise level of stations by using the statistical characteristics of background noise power spectral densities when the effective frequency is in the range of1~10Hz at Binchuan region The results show that the quality of records can be improved greatly with better observation condition and environment,the superposition of air-gun signals with high signal-to-noise ratio can be reduced,and the farther propagation distance also can be achieved with the same superposition by building and maintaining the stations with high quality

关 键 词：概率谱密度 噪声评估 台基处理 对比观测 气枪震源 

分 类 号：P315.63[天文地球—地震学]