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Caf2tfr

From ambiguity plane to time frequency plane

Calling Sequence

TFR = Caf2tfr(AF, kernel)

Parameters

AF :

Square complex matrix, the ambiguity function of the signal

kernel :

Square real matrix with same sizes as AF, the kernel of the TFR

TFR :

Square real matrix, the time frequency response for the given kernel

Description

Computes the Cohen's group Time Frequency Representation (TFR) of a signal given its ambiguity function and the kernel of the TFR. Warning : AF and kernel are matrices of the same size and square!

Examples

//Wigner TFR of a tone embedded in noise
AF = Cambifunb(hilbert(sin(2*%pi*0.25*(1:128))+0.5*rand(1,128,'normal')),-63:64,128);
ker = Ctfrker(128,128,'WV');
Wigner_TFR = Caf2tfr(AF,ker);
grayplot(1:128,linspace(0,0.5,128),Wigner_TFR');

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