AIS 信号を使用した船舶の追跡

cmdlineInput = 0;
if cmdlineInput
    % Request user input from the command-line for application parameters
    userInput = helperAISUserInput;
else
    load('defaultInputs.mat');
end
% Calculate AIS parameters based on the user input
[aisParam,sigSrc] = helperAISConfig(userInput);

% Create the data viewer object and configure based on user input
viewer = helperAISViewer('LogFileName',userInput.LogFilename, ...
                         'SignalSourceType',userInput.SignalSourceType);

% Launch map based on user input
if userInput.LaunchMap
    startMapUpdate(viewer);
end

% Log data based on user input
if userInput.LogData
    startDataLog(viewer);
end

% Start the viewer and initialize radio time
start(viewer)
radioTime = 0;

% Main loop for capturing and decoding the AIS samples
while radioTime < userInput.Duration  
    if aisParam.isSourceRadio       
        if aisParam.isSourceRTLSDRRadio         % For RTL-SDR
            [rcv,~,lost,~] = sigSrc();
            lostFlag = logical(lost);         
        elseif aisParam.isSourcePlutoSDRRadio   % For ADALM-PLUTO
            [rcv,~,lostFlag] = sigSrc();
        elseif aisParam.isSourceUSRPRadio       % For USRP
            [rcv,~,lostFlag] = sigSrc(); 
        end
    else                                        % For baseband file
        rcv = sigSrc();
        lostFlag = uint32(0);
    end

    % Recover the information by decoding AIS samples
    [info, pkt] = helperAISRxPhy(rcv,aisParam);

    % View decoded information on viewer
    update(viewer, info, pkt, lostFlag);

    % Update radio time
    radioTime = radioTime + aisParam.FrameDuration;
end

% Stop the viewer and release the signal source
stop(viewer)

release(sigSrc)