receive

Receive IQ signal from radars in the scenario

collapse all in page

Syntax

sig = receive(scenario)
[sig,info] = receive(scenario)
[sig,info,pids] = receive(scenario)

Description

sig = receive(scenario) returns the target echos, sig, received at radars in the scenario.

[sig,info] = receive(scenario) also returns a structure array of configurations at each radar, info, of each radar when the signal is received.

example

[sig,info,pids] = receive(scenario) also returns a column array of platform IDs pids.

Examples

collapse all

Open Live Script

Obtain the signal from two platforms in a radar scenario using a radar transceiver. Set the random number seed to ensure the repeatability of the data.

s = rng(0);
scenario = radarScenario('UpdateRate',1);
plat1 = platform(scenario);
plat1.Trajectory.Position = [0,0,0];
plat1.Sensors = radarTransceiver;
plat2 = platform(scenario);
plat2.Trajectory.Position = [1000,0,0];
[sig,sensorConfs] = receive(scenario)
sig = 1×1 cell array
    {100×2 double}


sensorConfs = struct with fields:
              IsScanDone: 0
         MechanicalAngle: 0
         ElectronicAngle: [2×1 double]
          OriginPosition: [3×1 double]
             Orientation: [3×3 double]
      NextRepetitionTime: 1.0000e-04
    ReferenceSensorIndex: 0
                  Sensor: [1×1 radarTransceiver]

Platform 1 receives echo from platform 2.

rgrid = physconst('lightspeed')*(0:size(sig{1},1)-1)/ ...
    (2*sensorConfs.Sensor.Waveform.SampleRate)/1e3;
plot(rgrid,abs(sum(sig{1},2)))
xlabel('Range (km)')
ylabel('Magnitude')

Figure contains an axes object. The axes object with xlabel Range (km), ylabel Magnitude contains an object of type line.

Input Arguments

collapse all

Radar scenario, specified as a radarScenario object.

Output Arguments

collapse all

Signal received at the radar receiver, returned as a cell array. Each element of the cell array is the received echoes at each radar.

Complex Number Support: Yes

Radar configurations, returned as a structure array. Each structure contains the following fields:

  • IsScanDone –– Whether one period of mechanical scan is done

  • MechanicalAngle –– Current antenna pointing angle due to mechanical scan

  • Origin –– Radar location in the platform coordinate system

  • Orientation –– Radar orientation axes in the platform coordinate system

Data Types: struct

Platform IDs on which radars are mounted, returned as a column vector of real values.

Data Types: double

Version History

Introduced in R2021a

See Also

| | | | |