splot2h.m

阵列信号处理的工具箱

function splot2h(estDirSpec,plotType)

% *****************************************************************************
%   *  DBT, A Matlab Toolbox for Radar Signal Processing  *
% (c) FOA 1994-2000. See the file dbtright.m for copyright notice.
%
%  function splot2h(estDirSpec,plotType)
%
%  Plots a DOA-spectrum, either a power spectrum or a pseudo
%  spectrum.
%
%  estDirSpec  EstDirSpecT
%  plotType    StringT     plotType(1,1)  = 'd' : logaritmic y-axis or
%                  'l' : linear y-axis.
%                  ' ' : Default y-axis type.
%           plotType(1,3:5)= see 'linetype' for the usual
%                   Matlab 'plot' command.
%
%  Start        : 951220 Svante Bj鰎klund (svabj).
%  Latest change: $Date: 2000/10/16 15:22:10 $ $Author: svabj $.
%  $Revision: 1.16 $
% *****************************************************************************

floorLevel = -70; % Values below this [dB] is not plotted in
         %  logaritmic plots.

cax = newplot;
%        NEWPLOT
%        "does the right thing" in terms of determining which axes and/or
%        figure to draw the plot in, based upon the setting of the
%        NextPlot property of axes and figure objects, and returns a
%        handle to the appropriate axes.

% ----------------------------------------------------------------------- %
% Pick out fields from record variables.
% ----------------------------------------------------------------------- %

chkdtype(estDirSpec, 'DoaSpecT')

if (estDirSpec.version < 4)
    error(['DBT-Error: Too old version of input parameter "estDirSpec". ',...
      'Probably because a definition of the "DoaSpecT" variable ',...
      'somewhere else than in function "DoaSpecT".'])
end%if

spectrum    = estDirSpec.specSmpl;
doas     = estDirSpec.doaPos;
thetasvepg  = r2d(doas(1,:));

if (nargin == 1)
  plotType = 'da-';
end

if (size(plotType,2) == 0)
 plotType = 'da-';
end
if (size(plotType,2) == 1)
 plotType = [plotType 'a-'];
end
if (size(plotType,2) == 2)
 plotType = [plotType '-'];
end


yAxisType =  plotType(1,1);
xAxisType =  plotType(1,2);
lineType  =  plotType(1,3:size(plotType,2));
if ((yAxisType == ' '))
  yAxisType = 'd';
end%if
if ((xAxisType == ' '))
  xAxisType = 'a';
end%if



% ------------------------------------------------------------------------- %
% Plot
% ------------------------------------------------------------------------- %

if strcmp(xAxisType,'s')
  thetasvepg = sin(d2r(thetasvepg));
elseif strcmp(xAxisType,'a')
  % Do nothing.
else
  error('DBT-Error: Unknown x-axis type.');
end

if strcmp(yAxisType,'l')
  plot(thetasvepg, (abs(spectrum))./max(abs(spectrum)), lineType)
  axis([thetasvepg(1,1), thetasvepg(1,size(thetasvepg,2)), 0, 1])
  ylabel('Normalized directional spectrum [linear]')
elseif strcmp(yAxisType,'d')
  plot(thetasvepg, 10*log10(abs(spectrum)+eps), lineType)
%  plot(thetasvepg, max(10*log10((abs(spectrum))./max(abs(spectrum))),floorLevel), lineType)
  ylabel('Directional spectrum [dB]')
else
  error('DBT-Error: Unknown y-axis type.');
end

if strcmp(xAxisType,'s')
  xlabel('Direction: sin(angle)')
elseif strcmp(xAxisType,'a')
  xlabel('Direction [degrees]')
else
  error('DBT-Error: Unknown x-axis type.');
end

title(estDirSpec.spectrumType)
grid on

%plotType(1,2:size(plotType,2))