基于 GA 和 MP 的信号稀疏分解%% MATLAB script for MP algorithm based on FFT%%％＊*＊*＊＊＊***＊＊＊＊＊*＊＊*＊ Preparation part *＊**＊******＊**＊＊****＊＊＊＊＊＊＊＊＊％％＊＊＊＊*＊＊**＊**＊*＊*****＊****＊ part 1:imput signal ****＊＊*＊＊*＊＊***＊＊**********Im=wavread('FEM’)；Im=Im'；%*＊*＊*＊*＊＊*******＊*＊**＊**＊＊** part 2: set parameters *＊＊＊＊**＊*****＊*****＊**＊f1=50；f2=160;fs=200;iterative_number=100; ％ the matching pursuit processing iterative number［a,N]=size(Im）； % the longth of signal and the longth of atoms； Na_base=2； ％ scale: the scale is determined by a and j；j_min=0;j_max=log2(N）；u_base=1/2; % the transmission or displacement u should determined as following v_base=pi; % the frequency vk_min=0； w_base=pi/6; ％ the phase wi_min=0;i_max=12；%％**＊＊*＊＊＊*****＊＊＊***＊**＊* initialization *＊＊＊***＊＊＊***＊＊＊＊＊＊*＊******＊＊*＊＊signal=Im；signal_reconstruct=zeros（1,N)；signal_r=Im；%＊***＊＊＊****＊*＊＊ wipe off the direct current vector *＊＊*＊＊＊＊***＊＊*＊*＊＊**＊*＊*＊signal_reconstruct=(1/N）＊sum(signal);signal_r=signal—signal_reconstruct; %＊**＊＊*＊*＊**＊＊*＊***＊＊＊start calculation*＊＊**＊＊*＊*＊*****＊*＊＊＊*＊＊***＊＊**＊＊ for n=1：iterative_number％ *＊＊**＊＊*the following program uses one subroutine to select the best atom*＊***＊＊**＊**＊* ［proj，scale，translation，freq,phase]=gas（signal_r,N，a_base,j_min，j_max，u_base,p_min，v_base，k_min,w_base,i_min,i_max)；％***＊＊＊reconstruct the best atom from the parameters got by above subroutine**＊*＊＊**＊t=0：N-1;t=（t—translation)/scale;g=(1/sqrt（scale）)＊exp(—pi*t.*t）。*cos（freq＊t+phase）； g=g./sqrt(sum（g。*g））; ％normalizatiom the atom%*＊*＊***＊***reconstruct signal and renew the residual＊＊＊**＊＊**＊**＊＊*＊*＊*＊**signal_reconstruct=signal_reconstruct+proj＊g；signal_r=signal_r-proj...
