稀疏分量分解。

function [y A]=sparseBSS1(X,L,langda,G,h,delta)-function　[y　A]=sparseBSS1(X,L,langda,G,h,delta)

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　　　　　　　　　 2009-04-15 YangZhicong

　X: observed signal,each row correspond to a sensor observations

　L: the length　of FFT (or the length of Hanning window)

　langda: adjust the desired angular width

　G:　 discretize the potential field by taking a sample of G points

　h: threshold

　y: estimated sourses

　A: estimated mix matrix