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Plot Array Directivity Using Sensor Array Analyzer App

The sensorArrayAnalyzer is a Matlab™ App that lets you examine important properties of a phased array such as shape and directivity.

Open sensorArrayAnalyzer App

When you type sensorArrayAnalyzer from the command line or select the app from the App Toolstrip, an interactive window opens. The default window shows the geometry of a 4-element uniform linear array. You can then select various options to analyze different arrays, other element types, geometry, and directivity.


Create 3D Directivity Plot of 4-by-4 URA

As an example, use the app to create a 4-by-4 uniform rectangular array of cosine antenna elements and then show the array directivity. Space the elements 0.4 wavelengths apart.

  1. Set the Array Type to Uniform Rectangular

  2. Set the Element Type to Cosine Antenna

  3. Set the Size of the arry to [4 4]

  4. Set the Element Spacing to [0.4 0.4] wavelengths

  5. Make sure to select the spacing units to wavelength

  6. Select the Steering check box

  7. Set the Steer Angle to [-30,0] to show a steered array

  8. Choose the type of View as 3D Array Directivity

  9. Choose the view Option as Polar to get a polar diagram

  10. Select the Show Geometry check box to show the array shape as well

Then, you will see a plot of array directivity similar to this.

filenm = fullfile(matlabroot,'examples','phased','SensorArrayAnalyzerAppExample_02.png');
im = imread(filenm);
figure('Position',[315 160 906 690])
axis off
set(gca,'Position',[0.078 0.077 0.845 0.896])

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