目标触底瞬态地震波信号的检测

Detection of Instantaneous Seismic Wave Signals of Target Hitting Bottom

摘要:

目标触底过程中通常会产生强烈的瞬态地震波信号,通过对此类地震波信号的监测、处理和分析,能够帮助判断该信号的产生是否是由异常活动产生的,并且能够根据信号分析相关信息,实现早期预警, 从而做出快速响应。 由于双谱检测具有很好的抗高斯干扰能力,对高斯平稳随机过程和试验模拟目标触底瞬态地震波信号的双谱特性进行了分析,并在高斯背景中对试验采集的瞬态信号进行了检测仿真,仿真试验结果表明:在高斯背景的干扰下,双谱检测能够有效实现对瞬态信号的检测^[1] 。

Abstract:

In the process of the target hitting the bottom, strong instantaneous signals are generated. Monitoring, processing and analyzing these signals can help to determine whether the signal is from abnormal activities or not, and analyzes relevant infor- mation according to signal to realize early warning and quick response. Since bispectrum detection has a good capability in depress- ing Gaussian interference, stationary Gaussian random processes and bispectrum characteristics of simulating instantaneous seismic wave signals produced by bottoming experiments are analyzed in this paper. Instantaneous signals acquired by test are detected and simulated in the Gaussian background, and results show that bispectrum detection can effectively detect the instantaneous signals un- der background with Gaussian interference^[1] .