CAJ | 학술논문

利用统计假设原理及地震信号瞬时相位的相关特性,计算了叠加速度谱.理论模型的试算和实际资料的处理结果表明:与常规速度分析方法相比,该方法具有较高的时间分辨率和速度分辨率,而且抗噪性非常好.该方法不仅不受时窗边界奇异性的影响,还可以有效地避免边缘效应,反映更多反射波信息.该方法对于层速度的精确计算很关键,同时也表明了统计方法用在多道信号估计上是有效的.
이용통계가설원리급지진신호순시상위적상관특성,계산료첩가속도보.이론모형적시산화실제자료적처리결과표명:여상규속도분석방법상비,해방법구유교고적시간분변솔화속도분변솔,이차항조성비상호.해방법불부불수시창변계기이성적영향,환가이유효지피면변연효응,반영경다반사파신식.해방법대우층속도적정학계산흔관건,동시야표명료통계방법용재다도신호고계상시유효적.
In this paper, we calculate stack velocity spectrum using instantaneous phase correlation characteristic of seismic signal and statistical hypothetical test principle in probability method. We conduct test and calculation using synthetic and real data and compare with conventional velocity spectrum. The results showed that the method has higher resolution in velocity and in time and has better anti-noise property compared with conventional methods. This method, which does not suffer from time-window boundary singularity, can avoid edge effects and give much more reflection information. This method is taken as the key to calculate interval velocity and the result indicates that using statistical method in multi-channel signal estimation is also effective.