FreeScopes Basic V - Surveillance & ATM Integration | SkyRadar

FreeScopes Basic V — Surveillance & ATM Integration

FreeScopes Basic V extends the FreeScopes DSP environment into surveillance and ATM data processing.

Working with signals and data streams generated by the CNS Interface Trainer, trainees can visualize, decode and analyse surveillance signals from the RF and interrogation/reply level through message decoding, network transport and aircraft-track reconstruction.

The module combines SSR Mode A/C/S, ADS-B, TCAS-related surveillance processes, ASTERIX and IP-based data transport in one end-to-end training environment.

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Training Advantages

CONNECT RF TO SURVEILLANCE MESSAGES — Follow 1030 / 1090 MHz interrogation and reply signals through decoding and interpretation.
TRAIN SSR, ADS-B AND TCAS CONCEPTS — Analyse Mode A, Mode C, Mode S, ADS-B / 1090 ES and TCAS-related surveillance processes.
RECONSTRUCT AIRCRAFT TRACKS — Associate identity, altitude, position and velocity fields with aircraft and target scenarios.
ANALYSE IMPAIRMENTS AND FAULTS — Investigate garbling, overlapping replies, noise, missing responses and corrupted messages.
WORK WITH ASTERIX AND IP TRANSPORT — Map decoded surveillance information into ASTERIX, including CAT 21, and downstream track data.
TROUBLESHOOT END TO END — Correlate RF, protocol, network and timing behaviour in controlled exercises.

From Interrogation to Aircraft-Track Visualization

FreeScopes Basic V is the surveillance and ATM integration module of the FreeScopes CNS training environment. It extends the existing plot, track and structured-data scope with primary and secondary surveillance context, SSR Mode A/C/S, ADS-B and TCAS-related workflows.

Interrogation / RF signal → reply → decoding → surveillance message → ASTERIX / network → track → visualization

Working with signals and data streams generated by the CNS Interface Trainer, trainees can inspect how information changes across processing layers and troubleshoot the complete surveillance path. The module remains an educational environment and does not represent an operational certified ATM system.

What Trainees Do

Receive, generate and decode ADS-B / 1090 Extended Squitter signals
Analyse Mode A/C/S interrogation and reply sequences at 1030 / 1090 MHz
Interpret Mode A identity, Mode C altitude and Mode S message fields
Exercise Mode S selective interrogation and aircraft addressing
Visualize and analyse TCAS-related interrogation and reply exchanges
Reconstruct aircraft tracks and associate surveillance messages with aircraft and target scenarios
Inspect detections, plots, tracks and supported ASTERIX structures
Analyse garbling, overlapping replies, noise and missing responses
Inject delayed, incomplete, inconsistent or corrupted surveillance messages
Evaluate network delay, packet loss, data integrity and update rates
Troubleshoot RF, message/protocol, network/data and timing layers end to end

Surveillance & ATM Integration Foundation

FreeScopes Basic V builds on the radar, signal-processing and RF foundations of Basic I–IV and introduces practical SUR and DPR workflows. It provides RF pulse and message-decoding views, interrogation/reply timelines, message-field inspection, aircraft-track plots, ASTERIX inspection, network packet timelines and multi-domain correlation of RF, messages, surveillance data and timing.

This module requires the CNS Interface Trainer for signal provision, data streaming and controlled fault injection.

Main Training Scope

SSR MODE A/C/S

Primary and secondary surveillance context
Mode A identity and Mode C altitude
Mode S messages, selective interrogation and aircraft addressing
1030 / 1090 MHz interrogation and reply timelines

ADS-B & TCAS SURVEILLANCE

ADS-B / 1090 ES structure, generation and decoding
Aircraft identity, altitude, position and velocity fields
TCAS surveillance and interrogation/reply principles
TCAS-related message-exchange visualization

TRACKS & SCENARIOS

RF signal to decoded message and aircraft-track reconstruction
Plot generation, track formation and continuity
Association with aircraft and target scenarios
Observability and surveillance-system behaviour

ASTERIX & ATM DATA

ASTERIX formats and message interpretation
CAT 21 as the confirmed category example where included
Mapping decoded information into ASTERIX and track data
Other categories only where project-specific and contractually defined

NETWORK & TIMING

UDP / TCP / IP-based surveillance-data transport
Data latency and packet-loss analysis
Data integrity and message consistency
Update-rate analysis

IMPAIRMENTS & TROUBLESHOOTING

Garbling, overlapping replies, noise and missing responses
Delayed, incomplete, inconsistent and corrupted messages
RF, protocol, network and timing correlation
End-to-end surveillance troubleshooting

CAT 034, CAT 048 and CAT 062 are project-specific categories and are not presented as universally supported.

Practical Experiment Examples

ADS-B AND SSR DECODING

Receive, generate and decode ADS-B signals; analyse Mode A/C/S interrogation/reply sequences and interpret identity, altitude and Mode S fields.

MODE S AND TCAS EXCHANGES

Exercise selective interrogation, aircraft addressing and TCAS-related surveillance message exchanges.

AIRCRAFT-TRACK RECONSTRUCTION

Associate surveillance messages with aircraft and target scenarios, then reconstruct and compare tracks.

GARBLING AND SIGNAL IMPAIRMENTS

Analyse overlapping replies, noise, missing responses and their effect on decoding and tracking.

CONTROLLED FAULT INJECTION

Investigate delayed, incomplete, inconsistent or corrupted messages in repeatable scenarios.

ASTERIX AND NETWORK ANALYSIS

Decode ASTERIX messages, inspect CAT 21 fields and analyse UDP / TCP / IP transport, packet loss, latency, integrity and update rates.

END-TO-END WORKFLOW

Interrogation / RF → decoding → ASTERIX → network → track → visualization

Correlate RF, message/protocol, data/network and timing observations to locate faults across the surveillance chain.

Visualizations and Scopes

RF pulse and message-decoding views
1030 / 1090 MHz interrogation and reply timelines
Mode A/C/S and Mode S message-field inspection
ADS-B field inspection and TCAS message-exchange visualization
Aircraft-track plots and ASTERIX field inspection
Network packet timelines
Multi-domain correlation of RF, messages, surveillance data and timing

Technical Specification Summary

PRODUCT & TRAINING ROLE

Product
FreeScopes Basic V

Primary role
Surveillance & ATM integration training

Environment
Browser-based FreeScopes

Hardware dependency
CNS Interface Trainer

Training level
Taxonomy levels 3 and 4 in conformity with ICAO Doc 10057 and the EASA Easy Access Rules for ATM in the sections SUR and DPR

SURVEILLANCE PROCESSING SCOPE

Surveillance
Primary/secondary context; SSR Mode A/C/S; ADS-B / 1090 ES; TCAS concepts

Data stages
RF signals, replies, decoded messages, ASTERIX, plots and tracks

Confirmed category example
ASTERIX CAT 21

Transport
UDP / TCP / IP where supported

Analysis
Latency, integrity, consistency, update rate and end-to-end observability

LICENSING

The scope of delivery includes one customer license unlimited in time and number of users within the restricted customer Intranet or Ethernet. Free provision of the software through the public Internet is explicitly excluded.

Where It Fits

FreeScopes Basic I → Basic II → Basic III → Basic IV → Basic V → surveillance and ATM-oriented training workflows

Basic V is responsible for decoding, analysis, visualization, data processing and troubleshooting. Recording, replay and live distribution are provided only through the separate FreeScopes Record, Replay & Livestream module.

The module remains training-focused and does not represent an operational certified ATM system.

Who It Is For

Universities and radar / ATM engineering programmes
ATSEP training organisations
Civil-aviation technical academies
Surveillance and radar laboratories
Defence radar / C4I training organisations
Applied research laboratories
Instructors teaching sensor-to-surveillance workflows

Learning Outcomes

After completing relevant exercises, trainees can explain SSR Mode A/C/S, ADS-B and TCAS surveillance principles; analyse interrogation/reply sequences; associate messages with aircraft scenarios; reconstruct tracks; decode supported ASTERIX fields; inspect IP transport; evaluate interference, timing, integrity and update-rate effects; and troubleshoot the complete RF-to-visualization workflow.

Related Products

Follow Surveillance Data from RF to Track Visualization

Use FreeScopes Basic V to decode, analyse and troubleshoot surveillance signals, messages and ATM data workflows.

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