function noisedef = defnoise(noiseType, noisePower, noiseCorrMx)%DEFNOISE Defines a noise source in a structure of type NoiseDefT.%%Synopsis:%  noisedef = defnoise(noiseType, noisePower, corrMx)%%Description:%  Defines a struct variable containing all information needed by function%  "simradarsig" in combination with function "simnoise" to simulate the%  radarsignal from noise that are created in the receiving radarsystem's%  channels. see simnoise for more detailed information.%%Input:%  noiseType [D](StringT)      : Type of noise, available type are:%     = 'Gaussian': Complex gaussian noise. (Default).%  noisePower [D](RealScalarT) : Power of noise in receiving antenna%     channels. Default is 1 [W].%  noiseCorrMx [D](CxMatrixT)  : The correlations matrix describing the%     correlation of noise between channels. Default is white noise.%%OutPut:%  noisedef (NoiseDefT) : A definition of the noise in a struct.%%--------%Notations:%  Data type names are shown in parentheses and they start with a capital%  letter and end with a capital T. Data type definitions can be found in%  [1] or by "help dbtdata".%%Examples:%  noiseSrc1 = defnoise('Gaussian', 0.3, eye(noChannels));%     This defines a noise source of the type 'Gaussian' which is a%     complex gaussian noise source with the power 0.3. i.e the variance%     of the complex noise is equal to 0.3. This noise source is also%     uncorrelated between the antenna channels.%%Software Quality:%%Known Bugs:%%References:%  [1]: Bj鰎klund S., Rejdemyhr D. Athley F.: "DBT, A MATLAB Toolbox%       for Radar Signal Processing. Reference Guide",%       FOA-D--9x-00xxx-408--SE, To be published.%%See also:%  deftarget defclutter defjammer simradarsig%   *  DBT, A Matlab Toolbox for Radar Signal Processing  *%  (c) FOA 1994-2000. See the file dbtright.m for copyright notice.%%  Initiation    : 981001 David Rejdemyhr (davrej).%  Latest change : $Date: 2000/10/16 15:20:32 $ $Author: svabj $.%  $Revision     : 1.0 $%*************************************************************************%-------------------------------------------------------------------------%----         In-parameter control & default values handling          ----%-------------------------------------------------------------------------if nargin < 3  noiseCorrMx = [];               % Defaults to white noiseend%ifif nargin < 2  noisePower = 1;                 % Defaults to the power 1 [W].end%ifif nargin < 1  noiseType = 'Gaussian';         % Defaults to gaussian noiseend%if%-------------------------------------------------------------------------%----               Setting up the output parameter                   ----%-------------------------------------------------------------------------noisedef.dataType = 'NoiseDefT';noisedef.Type     = noiseType;noisedef.Power    = noisePower;noisedef.CorrMx   = noiseCorrMx;%End Of File -------------------------------------------------------------