www.pudn.com > Correlation.Multiple.Cluster.rar > Rxx_uniform.m

function result = Rxx_uniform(d_norm,phi_0_deg,AS_deg) 
% result = Rxx_uniform(d_norm,phi_0_deg,AS_deg) 
% 
% Computes the correlation of the real/imaginary parts of the 
% signals in the case of a uniform Power Azimuth Spectrum (PAS) at 
% spacings given by d_norm. The PAS is characterised by the Angle 
% Of Arrival (AOA) phi_0_deg and by its Azimuth Spread (AS) AS_deg. 
% 
% 
% STANDARD DISCLAIMER 
% 
% CSys is furnishing this item "as is". CSys does not provide any 
% warranty of the item whatsoever, whether express, implied, or 
% statutory, including, but not limited to, any warranty of 
% merchantability or fitness for a particular purpose or any 
% warranty that the contents of the item will be error-free. 
% 
% In no respect shall CSys incur any liability for any damages, 
% including, but limited to, direct, indirect, special, or 
% consequential damages arising out of, resulting from, or any way 
% connected to the use of the item, whether or not based upon 
% warranty, contract, tort, or otherwise; whether or not injury was 
% sustained by persons or property or otherwise; and whether or not 
% loss was sustained from, or arose out of, the results of, the 
% item, or any services that may be provided by CSys. 
% 
% (c) Laurent Schumacher, AAU/TKN/I8/KOM/CPK/CSys - July 2001 
 
D                     = 2.*pi.*d_norm; 
% Conversion degree -> radian 
phi_0_rad             = phi_0_deg*(pi/180); 
AS_rad                = AS_deg*(pi/180); 
% Relation between AS and limits phi_0 +/- delta_phi 
delta_phi_uniform_rad = AS_rad*sqrt(3); 
 
m              = 0; 
result         = zeros(size(D)); 
tmp_xx_uniform = ones(size(D)); 
while (m < 100) 
    m              = m + 1; 
    tmp_xx_uniform = 2.*besselj(2*m,D).*sin(2*m* ... 
					    delta_phi_uniform_rad) ... 
	                              .*cos(2*m*phi_0_rad)./m; 
    result         = result + tmp_xx_uniform; 
end;