资源简介
包含最小平方反褶积,预测反褶积,稀疏脉冲反褶积,尖脉冲反褶积
代码片段和文件信息
function [w_min] = kolmog(wtype_of_inputL);
%KOLMOG: Kolmogoroff spectral factorization.
% Given a wavelet this function retrieves the minimum
% phase wavelet using Kolmogoroff factorization.
% If the input is a trace the spectral factorization
% is applied to the autocorrelation after smoothing.
%
% [w_min] = kolmog(wtype_of_inputL)
%
% IN w: a wavelet of arbitrary phase if
% type_of_input = ‘w‘
% or a seismic trace if
% type_of_input = ‘t‘
% L: lenght of wavelet if type_of_input=‘t‘
%
% OUT w_min: a min phase wavelet
%
% Reference: Claerbout 1976 Fundamentals of geophysical data processing
%
% Example:
%
% w = [1;2;-1;0;0;0;0]
% wmin = kolmog(w‘w‘);
% subplot(221); stem(w);
% subplot(222); stem(wmin);
%
% Copyright (C) 2008 Signal Analysis and Imaging Group
% For more information: http://www-geo.phys.ualberta.ca/saig/SeismicLab
% Author: M.D.Sacchi
%
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published
% by the Free Software Foundation either version 3 of the License or
% any later version.
%
% This program is distributed in the hope that it will be useful
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details: http://www.gnu.org/licenses/
%
[n1n2]=size(w);
if n2~=1;
error(‘Input wavelet or trace must be a column vector‘);
end;
if isequal(type_of_input‘w‘)
nw = length(w);
nfft = 8*( 2^nextpow2(nw));
W = log ( abs(fft(wnfft)) +0.00001);
W = ifft(W);
for k=nfft/2+2:nfft;
W(k)=0.;
end;
W = 2.*W;
W(1) =W(1)/2.;
W = exp(fft(W)) ;
w_min = real(ifft(W));
w_min = w_min(1:nw);
else;
nt = length(w);
nfft = 8*( 2^nextpow2(nt));
nw = L;
A = xcorr(wwL);
A = A.*hamming(2*L+1);
W = log ( sqrt(abs(fft(Anfft))) +0.00001);
W = ifft(W);
for k=nfft/2+2:nfft; W(k1)=0.;end;
W = 2.*W;
W(11) =W(11)/2.;
W = exp(fft(W)) ;
w_min = real(ifft(W));
w_min = w_min(1:nw1);
w_min_max = max(abs(w_min));
w_min = w_min/w_min_max;
end;
return
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 2243 2018-10-22 14:54 decon\kolmog.m
文件 2189 2018-10-22 14:54 decon\ls_inv_filter.m
文件 1230 2018-10-22 14:54 decon\polar_plot.m
文件 1957 2018-10-22 14:54 decon\predictive.m
文件 2228 2018-10-22 14:54 decon\smooth_spectrum.m
文件 2247 2018-10-22 14:54 decon\sparse_decon.m
文件 2268 2018-10-22 14:54 decon\spiking.m
文件 941 2018-10-22 14:54 decon\zeros_wav.m
目录 0 2018-10-22 14:54 decon
----------- --------- ---------- ----- ----
15303 9
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