二维地震资料波动方程非线性反演
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摘要
针对反演的要求和实际问题的需要,提出利用地震资料叠前数据进行二维波动方程反演,采用最小平方拟合修正模型参数的非线性反演方法,构造了问题的加速迭代算法.反演算法充分利用了冗余的叠前数据和多道相关性,可以分离噪声和信号,使噪声不参与或很少参与反演,算法抗噪能力强.数值模拟例子表明算法有效和稳定,得到了令人满意的结果.
In order to meet the requirements of inversion problem and its application to red data, this paper presents two-dimensional wave equation inversion problem with seismic prestack data. Nonlinear least squares method is applied to inversion problem. And a rapid iterative algorithm is constructed. The algorithm makes full useof redundancy available in prestack data and multichannel correlation to distinguish signal from the noise in case seismic data contain noise. So noise has slightly contaminated the result of inversion which shows good noise resistance of the method.Numerical results are satisfacfory.
引文
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