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Air Traffic Control 

ADS-B and WAM multilateration systems for air traffic control

Caratteristiche principali

ICAO Reference Standards – RTCA D0-282A
Operating frequency 1030/1090 MHz
Interoperable with Mode AC and Mode S systems (elementary and extended)
Great reception sensitivity up to -95dBm with 80 dB dynamics
High transmission power up to 3kW
Indoor or outdoor mounting
Redundant power supply with dual source (mains and battery)
Data output over Ethernet/IP Multicast interface
HW decoder on FPGA, extended squitter enhanced dectection
Coverage of over 200 nautical miles
Timing accuracy 0.125 ns
Internal thermal controlled oven clock
Remote system upgrade
Highly scalable system

Descrizione prodotto

SICE designs and builds a complete line of air traffic control (ATC) sensors based on ADS-B and Multilateration. They are an integral part of the monitoring systems of airports and their immediate surroundings but also of the monitoring systems over geographically large areas (wide area).

SICE sensors, easily positioned in both indoor and outdoor installations, are designed to process standard ICAO ac/S/S Extended Mode signals and are therefore able to interoperate with avionics transponders on board commercial aircraft. All sensors have a TCP/IP communication interface for interfacing with a Control Center, for traffic management and for the configuration, alarming and remote monitoring of the sensors themselves.

SICE supplies four basic types of sensors suitable for fixed installations on the ground: receivers, transmitters, transceivers and power amplifiers to expand the range of coverage of the transmitters. Depending on the needs, the sensors can be combined in various ways: many configurations are available and the system is extremely flexible. In addition to the four basic types of fixed devices, there is also a special mobile device to be placed on the roof of the service vehicles at the airport; this latter device, called Vehicular Mobile Transponder, is able both to transmit the position of the vehicle to the air traffic control network, and to provide the driver of the vehicle with a map showing the position of the aircraft manoeuvring in the vicinity of the vehicle itself. All fixed sensors (transmitters, receivers, transceivers) are manageable via TCP/IP network and are designed to build a real network of surveillance and control nodes. The ease of installation, the high scalability of the system, the dual technology of position calculation (ADS-B and Multilateration), the high sensitivity of the receivers and the power of transmitters make the ATC system built with SICE sensors highly reliable and easily scalable and redundant.

The sensors are based on ICAO Mode AC/S/S Extended signals. In particular, the receivers not only decode the messages received from the transponders but are also able to mark them temporally (with accuracy of the order of a tenth of a nanosecond) in order to make it possible not only to estimate the position of the aircraft through the declared GPS position but also to calculate the position itself with multilateration algorithms. The receivers, thanks to their very wide dynamic range (80 dB) and their high sensitivity (-95 dBm) are able to monitor areas up to 200 nautical miles. Transmitters, on the other hand, can be used to selectively query transponders. The maximum transmission power, thanks to the High Power Amplifier module, reaches 3KW impulsive. The receivers communicate the received data to the Control Center via TCP/IP network. Thanks to the decoder entirely developed in hardware, the maximum achievable throughput is very high and allows to process several thousand messages per second, ensuring the effectiveness of the system even in the most demanding scenarios. GPS is integrated into the system and allows to keep the sensors constantly synchronized; however, in contexts where it is not possible to use GPS for synchronization, there is an alternative mechanism that still allows the use of sensors.

In addition, thanks to the vehicle device, the position of mobile service vehicles can be monitored in real time directly in the traffic control system. Not only that: the vehicle device also has a receiver capable of sending to a tablet the entire vehicle the map of the airport with the location of the aircraft and service vehicles nearby. A peculiarity of the vehicle device is that it can transmit its position even when the GPS signal is absent for short distances.

SICE completes its portfolio of MLAT, ADS-B sensors with a range of radio links that allow to build complete networks for air traffic control even in areas where it is difficult to create wired networks. Such devices are especially useful when you want to build a large area ATC network (WAM).


Detection of avionics transponders to ICAO standards
Detection of aircraft position inside and outside tourist, military and civil airports
Dual detection technique: ADS-B and Multilateral
Air traffic control both within the airport grounds and wide area
Selective queries to targets


HousesRack 19'' 3U indoor and/ or full outdoor solution
Antenna connectorN male
Transmission poweradjustable up to 53dBm impulsive
Local alarmismLED/GPIO on the front
Remote alarmismvia dedicated software
Filtrationselective cavity filters according to ICAO 1030/1090MHz standards
ICAO SignalsMode S Short or Extended, Mode AC
ReceptionI/Q demodulator
Dynamicshigh thanks to double high-performance A/D bench
Sensibilityup to over -95dBm
SystemScalable and customizable
Digital Unitsignal processing
Filter Unit1030/1090MHz filtering
Mod & Power amplifiersignal amplification up to 53dBm
High Power amplifier with LNAtransmission power up to 3kW
Power switchchoice of rear power supply element
Feedingdouble redundant "hot swap" power supply
Power supplyalternating management 115/230Vac and 48VDC battery
Equipment configurationvia TCP/IP, web, CLI and GUI with dedicated software
Equipment controlvia TCP/IP, web, GUI, NMS and GPIO with dedicated software
Ethernet interfaceRJ45, Ethernet, Full Duplex, Autosensing
ConfigurationEach system can be chosen in AC/DC or 48Vdc configuration
MLAT GPS RX SensorSingle receiver (1090MHz) with GPS included in 19" rack basket with dual power supply
MLAT GPS RX Sensor & DCSingle receiver (1090MHz) with GPS and dc injector with dual power supply
MLAT GPS RTX SensorTransmitter (1030MHz) and Receiver (1090MHz) with GPS and Dual Power Supply
MLAT GPS RTX Sensor Synchronizer (SGU)Transmitter (1090MHz) and Receiver (1090MHz) with GPS and Dual Power Supply
MLAT DUAL GPS RX SensorDual receiver (1090MHz) each with GPS, included in 19" rack basket with dual power supply
MLAT DUAL GPS RX Sensor & Dual DCDual Receiver (1090MHz) each with GPS with Dual DC Injector, with Dual Power Supply
HPA and LNAHigh power 3kW rated power amplifier with harmonic filters 64dBm and Low Noise Amplifier with dual redundant AC and DC power supply with high ROS protection
LNA Light1090MHz outdoor amplification box
Active GPSantenna gain LNA 40dB gain, operating temperature -40°C to +85°C, including pole/wall fixing bracket

Codici Apparati

MLAT ADS-B:Multilater systems for air traffic control in indoor rack configuration

MLAT ADS-B:Multilateralization systems for air traffic control in full outdoor configuration

MLAT ADS-B:Multilateralization systems for air traffic control in split mount configuration