A method for extracting both effective reflection events and zero-offset trace signals is developed using the lateral coherence and the property that signal amplitude changes with offset.
本文利用信号的横向相关性和信号振幅随炮检距变化的特征，提出一种既能提取有效反射信号同相轴，又能提取零炮检距道信号的方法。
With the method of dynamic focus, the focus point can be located in the coherence gate during the whole depth scanning. So, the lateral resolution keeps constant.
采用了动态聚焦的方法，能使整个扫描过程中，焦点一直落在相干门内，保证横向分辨率是不变的。
With the method of dynamic focus, the focus point can be located in the coherence gate during the whole depth scanning. So, the lateral resolution keeps constant.
采用了动态聚焦的方法，能使整个扫描过程中，焦点一直落在相干门内，保证横向分辨率是不变的。
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