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A Synchronized Mil-Std-188-110B Receiver

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A Synchronized Mil-Std-188-110B Receiver

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12 Nov 2008 (Updated )

Extends the shipping "188" modem. Features a synchronized 1200 bps / short interleave receiver.

mil_188_gui(varargin)
function varargout = mil_188_gui(varargin)
% MIL_188_GUI M-file for mil_188_gui.fig
%      MIL_188_GUI, by itself, creates a new MIL_188_GUI or raises the existing
%      singleton*.
%
%      H = MIL_188_GUI returns the handle to a new MIL_188_GUI or the handle to
%      the existing singleton*.
%
%      MIL_188_GUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in MIL_188_GUI.M with the given input arguments.
%
%      MIL_188_GUI('Property','Value',...) creates a new MIL_188_GUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before mil_188_gui_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to mil_188_gui_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help mil_188_gui

% Last Modified by GUIDE v2.5 15-Sep-2008 09:20:58
% Copyright 2008-2010 The MathWorks, Inc. 

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @mil_188_gui_OpeningFcn, ...
                   'gui_OutputFcn',  @mil_188_gui_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before mil_188_gui is made visible.
function mil_188_gui_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to mil_188_gui (see VARARGIN)

% Choose default command line output for mil_188_gui
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes mil_188_gui wait for user response (see UIRESUME)
% uiwait(handles.main_figure);


% --- Outputs from this function are returned to the command line.
function varargout = mil_188_gui_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on button press in Run_Button.
function Run_Button_Callback(hObject, eventdata, handles)
% hObject    handle to Run_Button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
mil_std_188_Rx_6;  % open the Simulink Model
% set up to close model when this gui closes
set(handles.main_figure,'CloseRequestFcn','closereq; close_system(gcs,0)')

global data_out

% select channel impairment
Channel=get(handles.Channel_Select,'value');
ss=['mil_std_188_Rx_6/IQ_Source/Chan_Sel'];
set_param(ss,'value',num2str(Channel)); 


% set SNR in dB
snr_dB = get(handles.snr_edit,'string');
ss=['mil_std_188_Rx_6/IQ_Source/Freq Translator and Channel/'];
% get_param([ss,'AWGN/AWGN Channel'],'DialogParameters')   % gets block
% parameters, handy for debugging.
set_param([ss,'AWGN/AWGN Channel'],'SNRdB',snr_dB)
set_param([ss,'Static Channel/AWGN Channel'],'SNRdB',snr_dB)
set_param([ss,'Fading Channel/AWGN Channel'],'SNRdB',snr_dB)

set_param('mil_std_188_Rx_6/Demodulation and Error Correction/Text_On','value','0')

h=handles.Text_Display;
% Run through 4 different wave files for input to the modem
for run=1:4
    switch run
        case 1
             !copy mil_188_message_1.wav mil_188_waveform.wav
             set(h,'String','Waiting for Modem to Receive Transmission.')
        case 2
             !copy mil_188_message_2.wav mil_188_waveform.wav
        case 3
             !copy mil_188_message_3.wav mil_188_waveform.wav
        case 4
             !copy mil_188_message_4.wav mil_188_waveform.wav     
    end
   
   sim('mil_std_188_Rx_6');
   
   % find leading zeros in the data.
   k=1;
   while data_out(k)==0
       k=k+1;
   end;
   % send characters to text box
   
   set(h,'String',{char(data_out(k:end)')});
end

% --- Executes on selection change in Channel_Select.
function Channel_Select_Callback(hObject, eventdata, handles)
% hObject    handle to Channel_Select (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns Channel_Select contents as cell array
%        contents{get(hObject,'Value')} returns selected item from Channel_Select



function snr_edit_Callback(hObject, eventdata, handles)
% hObject    handle to snr_edit (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of snr_edit as text
%        str2double(get(hObject,'String')) returns contents of snr_edit as a double


% --- Executes during object creation, after setting all properties.
function snr_edit_CreateFcn(hObject, eventdata, handles)
% hObject    handle to snr_edit (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


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