Targets and Interference

Model radar cross section, sonar target strength, Swerling targets, clutter, and jammers.

The toolbox models target reflection and scattering by point-like reflectors. You can specify scattering radar cross sections (RCS) for non-polarized radiation or scattering matrices for polarized radiation. The four standard Swerling target scattering models are implemented. For the special case of backscattering radar scenarios, you can simulate an angle-dependent radar cross-section model. Radar cross-section models apply to both narrowband and wideband signals. Clutter and jammer models let you model land and sea reflections and interference sources. You can also simulate the four standard Swerling backscattering models in sonar scenarios. The toolbox enables you to simulate radar reflections from a walking pedestrian. For sonar system simulations, you can employ target strength models and create underwater noise sources. To simulate clutter, you can use a computer graphical processing unit (GPU) to speed up computations. In this case, use the phased.gpu.ConstantGammaClutter System object™.

Objects

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phased.BackscatterPedestrianBackscatter radar cross-section of pedestrian
phased.RadarTargetRadar target
phased.BackscatterRadarTargetBackscatter radar target
phased.BackscatterSonarTargetSonar target backscatter
phased.WidebandBackscatterRadarTargetBackscatter wideband signal from radar target
phased.BarrageJammerBarrage jammer
phased.ConstantGammaClutterConstant gamma clutter simulation
phased.gpu.ConstantGammaClutterSimulate constant-gamma clutter using GPU
phased.UnderwaterRadiatedNoiseRadiate acoustic noise from underwater or surface sound source

Blocks

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Backscatter PedestrianBackscatter signals from pedestrian
Radar TargetRadar target
Backscatter Radar TargetBackscatter radar target
Wideband Backscatter Radar TargetBackscatter wideband signals from radar target
Range Angle CalculatorRange and angle calculations
Constant Gamma ClutterConstant gamma clutter simulation
GPU Constant Gamma ClutterConstant gamma clutter simulation using gpu
Barrage JammerBarrage jammer interference source

Functions

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rcscylinderRadar cross section of cylinder
rcsdiscRadar cross section of flat circular plate
rcssphereRadar cross section of sphere
rcstrunconeRadar cross section of truncated cone
billingsleyicmBillingsley’s intrinsic clutter motion (ICM) model
depressionangDepression angle of surface target
grazingangGrazing angle of surface target
horizonrangeHorizon range
physconstPhysical constants
surfacegammaGamma value for different terrains
surfclutterrcsSurface clutter radar cross section (RCS)

Topics

Path Loss

Free Space Path Loss

Propagation environments have significant effects on the amplitude, phase, and shape of propagating space-time wavefields.

Clutter and Interference

Barrage Jammer

Create jamming signals that can reduce a receiver’s target detection performance.

Clutter Modeling

Reflections from land and sea can overwhelm a target echo. Use these tools to simulate clutter.

Target Models

Radar Target

Model targets with fluctuating and nonfluctuating radar cross-sections.

Swerling Target Models

The example illustrates the use of Swerling target models to describe the fluctuations in radar cross-section.

Electromagnetic Waves

Polarized Fields

What are polarized fields?

Standards and Conventions

This section introduces the concept of baseband signals and defines the local and global coordinate systems used in the toolbox.

Units of Measure and Physical Constants

Phased Array System Toolbox™ uses the International System of Units.