Geometric Interpretation of LS The Signal Model 8=e,h: 2=1 J(O)=(x-H0)T(x-H0) N-1 VaW-空h2 =1 whxiong@uestc.edu.cn 23whxiong@uestc.edu.cn Geometric Interpretation of LS 23 The Signal Model ^s = X p i=1 µi hi J(µ) = (x ¡ Hµ) T (x ¡ Hµ) = vuut N X¡1 n=0 (x[n] ¡ X p i=1 µi hi ) 2