plotResponse

System object: phased.AngleDopplerResponse
Package: phased

Plot angle-Doppler response

Syntax

plotResponse(H,X) plotResponse(H,X,ELANG) plotResponse(H,X,PRF) plotResponse(___,Name,Value) hPlot = plotResponse(___)

Description

plotResponse(H,X) plots the angle-Doppler response of the data in X in decibels. This syntax is available when the ElevationAngleSource property is 'Property'.

The size of the first dimension of the input matrix can vary to simulate a changing signal length. A size change can occur, for example, in the case of a pulse waveform with variable pulse repetition frequency.

plotResponse(H,X,ELANG) plots the angle-Doppler response calculated using the specified elevation angle ELANG. This syntax is available when the ElevationAngleSource property is 'Input port'.

plotResponse(H,X,PRF) plots the angle-Doppler response calculated using the specified pulse repetition frequency PRF. This syntax is available when the PRFSource property is 'Input port'.

plotResponse(___,Name,Value) plots the angle-Doppler response with additional options specified by one or more Name,Value pair arguments.

hPlot = plotResponse(___) returns the handle of the image in the figure window, using any of the input arguments in the previous syntaxes.

Input Arguments

`H`	Angle-Doppler response object.
`X`	Input data.
`ELANG`	Elevation angle in degrees. Default: Value of `Elevation` property of `H`
`PRF`	Pulse repetition frequency specified as a positive scalar. To enable this argument, set the `PRFSource` property to `'Input port'`. Units are in Hertz.

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

'NormalizeDoppler'

Set this value to true to normalize the Doppler frequency. Set this value to false to plot the angle-Doppler response without normalizing the Doppler frequency.

Default: false

'Unit'

The unit of the plot. Valid values are 'db', 'mag', and 'pow'.

Default: 'db'

Examples

expand all

Plot Angle-Doppler Response

Open Live Script

Plot the angle-Doppler response of the 190th cell of a collected data cube.

load STAPExampleData;
x = shiftdim(STAPEx_ReceivePulse(190,:,:));
hadresp = phased.AngleDopplerResponse(...
    'SensorArray',STAPEx_HArray,...
    'OperatingFrequency',STAPEx_OperatingFrequency,...
    'PropagationSpeed',STAPEx_PropagationSpeed,...
    'PRF',STAPEx_PRF);
plotResponse(hadresp,x,'NormalizeDoppler',true);

Documentation