fit_it_block_ar12

PURPOSE ^

SYNOPSIS ^

function [PSD,operador,coef_ar] = fit_it_block_ar12(observado)

DESCRIPTION ^

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 
0002 function [PSD,operador,coef_ar] = fit_it_block_ar12(observado)
0003 
0004 M = size(observado,1);
0005 Y=[];
0006 rhs=[];
0007 
0008 bloque = observado;
0009 
0010 for jj=3:M-2
0011    for kk=3:M-2
0012       Y=[Y; bloque(jj,kk-1) bloque(jj,kk-2) bloque(jj-1,kk+2:-1:kk-2) bloque(jj-2,kk+2:-1:kk-2)];
0013       rhs =[rhs;bloque(jj,kk)];
0014    end
0015 end
0016 
0017 coef_ar = Y\rhs;
0018 
0019 ptos=M;
0020 
0021 w=linspace(-pi,pi,ptos);
0022 
0023 z1=exp(sqrt(-1)*w);
0024 z2=exp(sqrt(-1)*w);
0025 
0026 F = zeros(ptos);
0027 
0028 for jj=1:ptos
0029    for kk=1:ptos
0030       v1 = coef_ar(1)*z1(jj)^0*z2(kk)^(-1);
0031       v2 = coef_ar(2)*z1(jj)^0*z2(kk)^(-2);
0032       v3 = coef_ar(3)*z1(jj)^(-1)*z2(kk)^2;
0033       v4 = coef_ar(4)*z1(jj)^(-1)*z2(kk)^1;
0034       v5 = coef_ar(5)*z1(jj)^(-1)*z2(kk)^(0);
0035       v6 = coef_ar(6)*z1(jj)^(-1)*z2(kk)^(-1);
0036       v7 = coef_ar(7)*z1(jj)^(-1)*z2(kk)^(-2);
0037       v8 = coef_ar(8)*z1(jj)^(-2)*z2(kk)^2;
0038       v9 = coef_ar(9)*z1(jj)^(-2)*z2(kk)^1;
0039       v10 = coef_ar(10)*z1(jj)^(-2)*z2(kk)^(0);
0040       v11 = coef_ar(11)*z1(jj)^(-2)*z2(kk)^(-1);
0041       v12 = coef_ar(12)*z1(jj)^(-2)*z2(kk)^(-2);
0042 
0043       val = 1 - (v1 + v2 + v3 + v4 + v5 + v6 + v7 + v8 +v9 + v10 + v11 + v12);
0044       F(jj,kk) = val;
0045       PSD(jj,kk) = 1 / abs(val)^2;
0046    end
0047 end
0048 
0049 operador = F;

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