SkyRadar iSAR — From Rotating Targets to Radar Signatures and Images

Training Advantages

• Observe Aspect-Dependent Signatures — Study how a rotating target changes its radar return as the viewing angle changes.
• Work with Real Radar Measurements — Acquire measurements with the NextGen 8 GHz Pulse Radar family rather than relying on simulation alone.
• Control Target Motion — Use the Rotary Unit and target holder to create repeatable aspect-angle sequences.
• Process Data in FreeScopes — Transform measured signatures into an iSAR representation and compare processing results.
• Connect Physics and Imaging — Relate target geometry, rotation and scattering behaviour to the resulting radar image.
• Build Repeatable Exercises — Prepare structured laboratory demonstrations and trainee experiments.

From Rotating Targets to Radar Signatures and Images

In synthetic aperture radar, the radar platform moves and observes a largely stationary scene from successive positions. In inverse synthetic aperture radar, the observing radar remains fixed while the target rotates or otherwise changes its aspect relative to the radar.

Rotary Unit and target → changing aspect angles → NextGen 8 GHz measurements → FreeScopes iSAR processing

SkyRadar iSAR turns this distinction into a practical laboratory workflow. Two Radar Box stations support the training architecture, while suitable targets or aircraft models are mounted on the controlled Rotary Unit. The exact laboratory distance depends on the installation; approximately seven metres is an example geometry, not a fixed system specification.

What Trainees Do

• Prepare a suitable target or aircraft model on the target holder
• Configure controlled rotation with the Rotary Unit
• Set up the fixed NextGen 8 GHz observing station
• Acquire radar measurements across changing aspect angles
• Inspect aspect-dependent amplitude and signature changes
• Transfer or access the measurements in FreeScopes
• Apply the iSAR processing workflow
• Compare radar signatures with the resulting iSAR representation
• Repeat experiments with changed targets, motion or processing choices

Main Training Scope

Where It Fits

Rotary Unit and target → two Radar Box stations / NextGen 8 GHz Pulse Radar → FreeScopes iSAR

The Rotary Unit supplies controlled aspect change. The NextGen 8 GHz Pulse Radar family provides real radar measurements, and FreeScopes supplies the trainee processing and visualisation environment.

SAR and iSAR: The Essential Distinction

Both approaches synthesise an aperture from measurements taken at changing observation angles. In SAR training, the radar moves relative to a stationary scene. In iSAR training, the radar is fixed and the target provides the relative angular motion. SkyRadar offers separate hands-on systems so trainees can study both geometries directly.

Prerequisites

• SkyRadar Rotary Unit, target holder and suitable target
• Two Radar Box stations within the NextGen 8 GHz Pulse Radar training architecture
• FreeScopes with iSAR processing environment
• Suitable laboratory space and installation geometry

Who It Is For

• Radar-engineering students
• Defence academies and technical training centres
• Universities and applied radar programmes
• Research and teaching laboratories
• Instructors teaching radar imaging and signature analysis

Learning Outcomes

After completing the exercises, trainees can explain how changing target aspect produces an inverse synthetic aperture, configure a controlled rotating-target measurement, interpret aspect-dependent radar signatures, process measurements in FreeScopes and distinguish clearly between SAR and iSAR geometries.

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