Advanced Surface Movement Guidance and Control System (A-SMGCS)

A-SMGCS (Advanced Surface Movement Guidance and Control System) is a modular, standards-based system that enables airports to maintain safe, efficient, and orderly movement of aircraft and vehicles across the aerodrome surface in all weather and visibility conditions. It integrates advanced surveillance (including MLAT, ADS-B, and Surface Movement Radar), dynamic routing, automated guidance, and safety alerts to support controllers and airport operators, reduce the risk of runway incursions, and enable high throughput even during low visibility or complex operations.

1. Functional Scope of A-SMGCS

A-SMGCS is specified in progressive capability levels, each building on the previous:

• Level 1 – Surface Surveillance: Real-time tracking and identification of all aircraft and vehicles on runways, taxiways, and aprons. Integrates MLAT, ADS-B, and SMR data for a unified display.
• Level 2 – Safety Support: Automated conflict detection and alerting, including runway incursion and non-conformance warnings, supporting rapid controller intervention.
• Level 3 – Routing: Automated, dynamic route generation for aircraft and vehicles, optimizing movements and preventing conflicts as operational scenarios change.
• Level 4 – Guidance: Automated control of airfield lighting (e.g., “Follow the Greens”), stop bars, and visual docking systems to direct mobiles safely along assigned routes.

Each level allows airports to incrementally enhance their ground movement capabilities, manage installation and operational risk, and meet evolving regulatory milestones.

2. Core Services and Technical Components

Surveillance

A-SMGCS fuses data from:

• Multilateration (MLAT): Uses arrays of ground stations to triangulate transponder signals, enabling precise localization of aircraft and vehicles.
• ADS-B: Aircraft and equipped vehicles broadcast their positions and velocities, which are collected by ground receivers.
• Surface Movement Radar (SMR): Detects all objects (including those without transponders) on the movement area, ensuring coverage of both cooperative and non-cooperative targets.
• Vehicle Tracking: Vehicles are equipped with transponders or GNSS beacons for continuous localization.

Data Fusion and HMI

A sophisticated data fusion layer matches tracks, filters false positives, and ensures unambiguous identification. The Human-Machine Interface (HMI) provides controllers with a customizable, role-based display integrating real-time traffic, alerts, routing, and system status.

Safety Support

Automated modules monitor for runway incursions, unauthorized movements, and route deviations, issuing timely alerts to controllers via the HMI.

Routing and Guidance

Dynamic route generators calculate optimal paths for each mobile, adjusting to restrictions and operational changes. Automated airfield lighting (“Follow the Greens”), stop bars, and advanced visual docking systems guide aircraft and vehicles visually, reducing the risk of misrouting.

3. Benefits of A-SMGCS

• Safety: Reduces runway incursions, collisions, and misroutings, especially in low visibility or high-density scenarios.
• Operational Efficiency: Optimized taxi routing and automated guidance reduce taxi times, queues, and emissions, enabling higher throughput.
• Resource Optimization: Reduces controller workload, consolidates situational awareness, and automates routine decisions.
• Regulatory Compliance: Enables airports to meet ICAO, EASA, FAA, and ETSI requirements for safe surface operations and supports future integration with remote/digital towers and AI-based systems.
• Scalability: Modular design allows deployment at any airport, from major international hubs to regional fields.

4. Implementation, Standards, and Compliance

Key Standards

• ICAO Doc 9830: Global framework for A-SMGCS, defining operational concepts and minimum capabilities.
• EUROCONTROL Specification 171: Service-level expectations for European airports.
• ETSI EN 303 213-1: Minimum specifications for surveillance (Level 1), including coverage, accuracy, and integrity.
• EUROCAE ED-87B/ED-128: Performance standards and technical guidance for data fusion and safety nets.
• FAA AC 120-57B: US guidance on A-SMGCS requirements for low visibility operations.

Compliance is ensured through documentation, acceptance testing, performance validation, and ongoing audits.

Stakeholder Roles

• Airport Operator: Project leadership, regulatory coordination, acceptance testing, maintenance.
• ANSP: Integration into ATC, procedure updates, controller training, operations management.
• Regulators: Approval, inspection, and enforcement.
• Airlines/Pilots/Vehicle Operators: Participation in planning, training, and feedback.
• Vendors: System supply, integration, and lifecycle support.

5. Technical Architecture and Interoperability

Sensor Integration

Combines MLAT, ADS-B, SMR, and vehicle trackers for complete surface surveillance.

Data Fusion & Safety Nets

Processes sensor data into a unified operational picture, running safety net algorithms for conflict detection and alerting.

Guidance Systems

Automated lighting (centerline lights, stop bars), visual docking guidance, and illuminated signage are integrated for dynamic, real-time guidance.

HMI

Ergonomic, configurable displays support controller situational awareness, alert management, and route assignment.

Interoperability

Standards-based interfaces ensure modular integration of vendor subsystems and connectivity with airport and ATM systems, including weather, airport resource management, and predictive analytics.

6. Use Cases

Low Visibility Operations (LVO)

A-SMGCS is critical when RVR drops below minima (e.g., 1,200 feet). All-weather surveillance, automated lighting, and safety nets enable safe, efficient movement, as seen at major airports like London Heathrow and Seattle-Tacoma.

High-Density Airports

Facilitates simultaneous, conflict-free departures and arrivals, optimized taxiing, and efficient adaptation to operational changes, supporting complex, multi-runway environments.

Sustainability

Reduces fuel burn, emissions, and energy consumption with optimized routing and dynamic lighting.

Emergency & Contingency

Maintains situational awareness and safe movement during degraded visual environments, equipment outages, or emergencies.

7. Compliance Checklist (per ETSI EN 303 213-1)

8. Future Trends

• Remote/Digital Towers: A-SMGCS provides foundational surveillance and guidance for remote tower operations.
• AI Decision Support: Integration with AI for predictive analytics, congestion management, and collaborative decision-making.
• Green Airports: Supports environmental initiatives by minimizing taxi times, optimizing resource use, and reducing energy consumption.

9. Summary

A-SMGCS enables airports to maintain the highest standards of safety, capacity, and efficiency—regardless of weather or traffic complexity—making it a foundational component for modern, future-ready airport operations.

If you want to learn how A-SMGCS can transform your airport’s surface operations, contact us or schedule a demo .