卡尔曼滤波器设计的一个例子

				% y = sovfilt(h,x,L1,L2)
				%    Returns the response of the nonlinear second 
				%    order Volterra filter h when the signal x is 
				%    applied at the filter input. L1 is the memory 
				%    length of the linear part of h, and L2 is the 
				%    memory length of the nonlinear part.
								%       Author : John Garas PhD.				%       Version 2.1, Release October 2002.				%       Copyright (c) DSP ALGORITHMS 2000-2002.