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Barrage Jammer

Barrage jammer interference source

Since R2021a


Radar Toolbox

  • Barrage Jammer block


The Barrage Jammer block generates a wideband noise-like jamming signal.


Effective radiated power (W)

Specify the effective radiated power (ERP) in watts of the jamming signal as a positive scalar.

Source of number of samples per frame

Specify the source for number of samples per frame as Property or Derive from reference input port. When you choose Property, the block obtains the number of samples from the Number of samples per frame parameter. When you choose Derive from reference input port the block uses the number of samples from a reference signal passed into the Ref input port.

Number of samples per frame

Specify the number of samples in the jamming signal output as a positive integer. The number of samples must match the number of samples produced by a signal source. This parameter appears only when Source of number of samples per frame is set to Property. As an example, if you use the Rectangular Waveform block as a signal source and set its Output signal format to Samples, the value of Number of samples per frame should match the Rectangular Waveform block's Number of samples in output parameter. If you set the Output signal format to Pulses, the Number of samples per frame should match the product of Sample rate and Number of pulses in output divided by the Pulse repetition frequency.

Simulate using

Block simulation method, specified as Interpreted Execution or Code Generation. If you want your block to use the MATLAB® interpreter, choose Interpreted Execution. If you want your block to run as compiled code, choose Code Generation. Compiled code requires time to compile but usually runs faster.

Interpreted execution is useful when you are developing and tuning a model. The block runs the underlying System object™ in MATLAB. You can change and execute your model quickly. When you are satisfied with your results, you can then run the block using Code Generation. Long simulations run faster than they would in interpreted execution. You can run repeated executions without recompiling. However, if you change any block parameters, then the block automatically recompiles before execution.

When setting this parameter, you must take into account the overall model simulation mode. The table shows how the Simulate using parameter interacts with the overall simulation mode.

When the Simulink® model is in Accelerator mode, the block mode specified using Simulate using overrides the simulation mode.

Acceleration Modes

Block SimulationSimulation Behavior
NormalAcceleratorRapid Accelerator
Interpreted ExecutionThe block executes using the MATLAB interpreter.The block executes using the MATLAB interpreter.Creates a standalone executable from the model.
Code GenerationThe block is compiled.All blocks in the model are compiled.

For more information, see Choosing a Simulation Mode (Simulink).



The block input and output ports correspond to the input and output parameters described in the step method of the underlying System object. See link at the bottom of this page.

PortDescriptionSupported Data Types
RefReference signal inputDouble-precision floating point
OutJammer outputDouble-precision floating point

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2021a