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本文分析了现行的最大似然法速度谱估计的基本运算过程。结果表明,各记录道间的幅度差异将严重降低方法的分辨率,对此,文中提出两种改进方法,并用人工合成记录方式进行了方法的可行性试验。
This paper analyzes the basic operation of the current maximum likelihood method for speed spectrum estimation. The results show that the amplitude difference between the recording channels will seriously reduce the resolution of the method. In this paper, two improved methods are proposed, and the feasibility test of the method is made with synthetic recording method.