ATDI

Optimising airport communications with innovative software solutions and services.

ATDI helps airport operators, civil aviation authorities, air traffic controllers, and national regulators to manage their wireless connectivity. As the demand for wireless technologies grows, ATDI provides reliable, cost-effective software solutions and services to enable organisations to manage their radio spectrum assets.

Our flagship RF planning and modelling software enables organisations to build robust, reliable, interference-free networks. This technology-neutral solution can be used on any radio technology, and handles multiple technologies across one project.

The scope of our services includes Aeronautical comms (HF, VHF/UHF, MW, Satellite including HAPS, Navigation systems (ILS, VOR, DMS, DME-DME), Surveillance (radars), and Multilateration (sensors).

HTZ models air-to-ground (A2G), ground-to-ground (G2G), and air-to-air (A2A) communications and analyses CNS (communications, navigation, and surveillance) radio instruments. It designs smart airports with IoT technologies like LoRa, SigFox, and WiFi, and supports spectrum coordination at national and regional levels.

Our consulting services cover the entire lifecycle of network implementation from initial radio network feasibility studies to optimisation. And, our team of experienced RF engineers leverage HTZ to model complex scenarios and design effortless network plans.

Explore a selection of our use cases below.

CNS – Assessing Coverage Analysis of Counter-Drones & Jamming Efficiency
Using the counter-drone efficiency analysis in HTZ, airport operators can assess network coverage at different height elevations of the UAV. This assessment highlights areas with poor signal coverage resulting from the topography and building heights. Once network black spots are identified, authorities can pinpoint locations where unauthorised UAVs can evade blocking or jamming. The authorities can then optimise their jammers or counter-drones to ensure they provide the required level of protection.
Using HTZ Warfare to design GNSS and CRPA jamming maps – ATDI

Flight Tracking
The flight tracking feature in HTZ analyses the impact of altitude, roll, pitch, and heading of aircraft. It calculates these effects on DL/UL thresholds and identifies interference between A2G stations and the aircraft.
ATDI – The planning power that airports trust – ATDI

MW link versus Flight altitude analysis
Understanding the likelihood of crossovers between MW path profiles and flight paths reduces the lost connections. HTZ identifies the potential impact of flight paths on MW links in and around an airport. This feature enables Civil Aviation Authorities and others to assess the viability of predefined microwave links and the potential intersections between the Fresnel zone for each beam and the flight paths.
MW links -v- flight altitude analysis – ATDI

Modelling the impact of the new buildings on VHF coverage airside
HTZ uses a high-resolution digital terrain model with building and clutter data to simulate the impact of new buildings on the airfield and surrounding areas. In HTZ, the new building footprint is overlaid on the map and the propagation model, Deygout 94 is applied. Simulations are calculated at 1m for ground use and 3m for aircraft receiver heights. The coverage analysis is exported for both receive and transmit sites, which highlights  areas where field strengths falls below ICAO recommendations.
Case study: modelling the impact of high-rise developments on airport comms – ATDI

Compatibility between broadcast & ILS
HTZ undertakes compatibility analyses between broadcast systems in Band II and instrument landing systems. It ensures compliance with ICAO standards by managing coexistence criteria between the systems, and preventing interference from impacting critical comms infrastructure.
Analysing interference between Broadcast & Instrument Landing systems (atdi.com)

Maximum building heights & exclusion zones
HTZ automatically computes the maximum building heights and exclusion zones on each point of the map for seen and not seen points to protect airport comms. This analysis checks the maximum clearance required and recalculates a new dataset based on the ASCII-GRID format. This is essential when modelling the impact of new buildings on radars and other airport comms equipment.

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