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System object: phased.BarrageJammer
Package: phased

Generate noise jamming signal


Y = step(H)
Y = step(H,N)



Starting in R2016b, instead of using the step method to perform the operation defined by the System object™, you can call the object with arguments, as if it were a function. For example, y = step(obj,x) and y = obj(x) perform equivalent operations.

Y = step(H) returns a column vector, Y, that is a complex white Gaussian noise jamming signal. The power of the jamming signal is specified by the ERP property. The length of the jamming signal is specified by the SamplesPerFrame property. This syntax is available when the SamplesPerFrameSource property is 'Property'.

Y = step(H,N) returns the jamming signal with length N. This syntax is available when the SamplesPerFrameSource property is 'Input port'.


The object performs an initialization the first time the object is executed. This initialization locks nontunable properties (MATLAB) and input specifications, such as dimensions, complexity, and data type of the input data. If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first call the release method to unlock the object.


expand all

Create a barrage jammer with an effective radiated power of 1000W. Then plot the magnitude of the jammer output. Your plot might vary because of random numbers.

Hjammer = phased.BarrageJammer('ERP',1000);
x = step(Hjammer);
plot(abs(x)); xlabel('Samples'); ylabel('Magnitude');