FreeScopes Basic II - 2D Radar Processing | SkyRadar

FreeScopes Basic II

Build on FreeScopes Basic I by applying the 2D FFT to radar data and examining targets across range and Doppler. Trainees learn how movement appears in Doppler views, then explore the results in spectrograms, heatmaps and the 3D Scope. Practical exercises also show how window functions and target properties affect the radar signal.

Designed for ATSEP teachers, military academy instructors, universities and radar-training laboratories using a supported radar, simulator or replayed dataset.

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See how FreeScopes Basic II supports practical exploration of two-dimensional radar processing and visualisation.

Training Advantages

Apply 2D FFT processing to radar data
Examine targets across range and Doppler
Connect signal-processing blocks with 3D Scope, spectrogram and heatmap views
Compare static thresholds with CFAR 2D
Explore radar cross section, Doppler and windowing through practical experiments
Prepare for later ATC, ECCM, SAR, AI and military radar training modules

Move from Single Frames to Two-Dimensional Radar Analysis

FreeScopes Basic II takes learners beyond individual signal traces. A burst of radar frames forms a matrix that can be processed with the 2D FFT. This lets trainees examine how target returns develop across range and Doppler and then interpret the result in a 3D Scope, spectrogram or heatmap.

Learners follow the signal chain from bursts and transforms to thresholding, detection and visual interpretation. Basic II is a training module; available results depend on the connected radar, simulator or replayed dataset and on the functions included in the current build.

What Trainees Do

Compare A-Scope and 3D Scope outputs
Use Burst and 3D Scope to represent frames over time
Apply FFT 1D processing and reorder FFT indices
Apply the 2D FFT and examine range-Doppler views
Analyse movement in Doppler visualisations, spectrograms and heatmaps
Compare static thresholds with CFAR 2D
Apply window functions and observe their spectral effects
Investigate how target size, angle, shape and material affect radar cross section
Use inverse FFT in relevant exercises where applicable

Main Functions

Range and Doppler Views

3D Scope, Heatmap, Spectrogram and Doppler visualisation.

Transforms

Burst, FFT 1D with index shift, FFT 2D and iFFT where applicable.

Detection

CFAR 2D, threshold controls and Suppress Source.

Radar Cross Section

Practical experiments with target size, angle, shape, material and orientation.

Window Functions

Hann/Hanning, Hamming, Blackman, Bartlett and Kaiser windows.

Additional Scope

SSR Scope where included in the current software build.

Where It Fits

FreeScopes Basic I → FreeScopes Basic II → ATC / ECCM / SAR / AI / SkySim

Basic I establishes the core DSP and radar-measurement foundation. Basic II adds matrix-oriented processing, 2D FFT and range-Doppler visualisation. Learners can then continue into specialised training paths.

Who It Is For

ATSEP training organisations and civil aviation academies
Defence academies and military radar schools
Universities and technical colleges teaching radar or signal processing
Instructors building practical radar laboratory exercises
Engineering learners with foundational DSP knowledge

Learning Outcomes

After suitable instruction and practical exercises, learners should be able to explain why 2D processing is used in radar analysis, distinguish major 1D and 2D transform stages, interpret range-Doppler, spectrogram, heatmap and 3D Scope representations, describe how window functions affect spectral analysis, and explain the teaching role of CFAR 2D, thresholding and radar cross-section experiments.

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Build the Next Stage of Your Radar-Processing Curriculum

Discuss how FreeScopes Basic II can extend an existing Basic I laboratory with two-dimensional processing, range-Doppler visualisation and practical experiments.

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