一种子波估算与反褶积的方法

常用的反褶积程序是在确定期望输出后直接从输入数据中估算反褶积算子,然后褶积得到输出数据。本文采用的方法是,先在剖面上指定的区段(时空方向定义),由定义的目标函数计算出判别值,用迭代法估算子波,再用子波求反子波,最后得到反褶积输出。子波估算是方法成功的关键。在迭代过程中,每次迭代均输出反褶积数据,计算出判别值,确定下一次迭代参数,同时用来计算子波每次迭代的校正量,修改其子波,最终得到高质量的反褶积剖面。

A method for wavelet estimation and deconvolution

The procedure of usual deconvolution is that after the definition of expectation output,the deconvolution operator is derived from input seismic data,then convolved with seismic data to yield output data.My new method includes the steps:defining an area in a seismic section,calculating criterion with the use of predefined objective func- tion,estimating wavelet by iterative method,deriving inverse wavelet from the known wavelet,and finally obtaining deconvolution output. Wavelet estimation is the key to the success of this method.Each iteration outputs deconvolution data.Then criterion is calculated,and next iterative parameter is deter- mined and used to calculate correction value for improving wavelet.Good deeonvolu- tion section can be obtained finally.