Automatic Dependent Surveillance – Broadcast

ADS-BAutomatic Dependent Surveillance – Broadcast (ADS-B) offers significant operationalenhancements such as improved pilot and controller situational awareness. ADS-B also offers safer air and surface operations through improved surveillance accuracy,update rate and intent information – all at a fraction of the cost of traditional surveillance systems.

The Sensis ADS-B Ground-based Transceiver (GBT) is a low cost, lightweight, easy toinstall unit that receives and decodes ADS-B messages. The GBT supports all commonforms of data link such as ADS-B/TIS-B/FIS-B over UAT and/or Mode S and complieswith industry standards. Its design features critical redundancy to ensure availabilityand fault isolation testing capabilities for easy troubleshooting. Further, the GBT can be configured to support Mode S multilaterationfor both surface and wide area applications.

Transitioning to ADS-BAlthough ADS-B capability will be more widelyavailable in the near future, we are now in atransitional period where an independent mode of surveillance is required until universalequipage is achieved. For safety to be maintained, all aircraft and vehicles must be “visible” to each other as well as to air traffic controllers.

The Sensis ADS-B GBTs can include both ADS-B and multilateration technology and begrouped to form a multi-mode surveillance network which tracks aircraft using bothADS-B and transponder multilateration. This architecture provides high accurate, highupdate rate surveillance on all transponder equipped aircraft and all ADS-B equippedaircraft. It also provides a seamless transition as more aircraft are equipped with ADS-B, with the immediate benefits of a redundant means of surveillance that isequivalent to, but independent of, the Global Navigational Satellite System (GNSS). This concept is equally applicable to small areas, such as an airport surface, and largegeographic regions.

Benefits

Improved...

Separation standards

Approaches in low-visibility conditions

Airport surface navigation for pilots

Aircraft and vehicular surface traffic management for controllers

Fleet tracking for airlines

Sensis pioneered the development and implementation of ADS-B, fielding the first operational ADS-B transceivers for both the Mode S Extended Squitter (1090 ES) and UAT datalinks.

Detect theDifference

Automatic Dependent Surveillance – Broadcast

ADS-BAutomatic – Information is transmitted automatically

Dependent – Relies on GNSS

Surveillance – Provides position, velocity, heading, altitudeand identification derived from the on-board avionics

Broadcast – Transmits the data to local aircraft and ADS-B transceivers

The position and identification data supplied byADS-B broadcasts are available to pilots and airtraffic controllers. ADS-B data updates rapidly, isvery accurate and provides pilots and air trafficcontrollers with common surface and air situationalawareness for enhanced safety, capacity andefficiency. Further, it provides a cost-effectivesolution for surveillance coverage in non-radarairspace.

ADS-B data updates rapidly, is very accurate, and provides pilots and air traffic controllerswith common surface and air situationalawareness.

ADS-B Specifications Equipment Specifications 1090MHz ADS-B Transceiver UAT Transceiver

Vertical mounting flanges 19" Rack Mount Mounting 57.8 cm (22.75 in) horizontal per EIA-310-D

64.1 cm (25.25 in) verticalDepth 21.6 cm (8.5 in) 24.4 cm (9.6 in)Weight 30 kg (66 lbs) 8.6 kg (19 lbs)

Input Voltage 18-30 VDC or 18 - 30 VDC100-240 VAC +/– 10%

Power Consumption 90 W w/o heater, 24 watts150 W w/ heater

Secondary Lightning All External InterfacesProtection

CSA, cTUVus, UL 60950,Safety Certifications EN 55022, 61000, 60215, UL 60950

60950, IEC 60950, CERF Compatibility FCC Part 15 Class B

System PerformanceReception Range >250 nmi* >200 nmi*Target Capacity 500 simultaneous targetsLatency <250 msecData Output Cat 21 Cat 33MOPS Compliance DO-260, DO-260A DO-282A

* configuration dependent

Sensis Global Headquarters 85 Collamer Crossings East Syracuse, NY 13057 USA

Phone: +1 315 445 0550 Fax: +1 315 446 2209 www.sensis.com email: info@sensis.com

10/08 © Sensis Corporation 2004-2008

While every effort is made to ensure data accuracy, please note that data may be subject to change.

System Architecture

Multilateration

Maintenance Display Terminal (MDT)

n Provides user interface for system control and

adaptation

n Displays system health and status

n Provides recording, play-back and analysis of data

Embedded Local Control &Monitoring Software (ELCMS)

n Provides field trouble shooting capabilities

Target Processor (TP)

n Computes and trackstarget positions (2D/3D)

n Performs time synchronization of Remote Sensors

n Reports targets in multiple outputformats and output modes

n Manages data communicationsover wired and wireless media

n Schedules interrogations

ATC Tower Displays

Mode S A/C Datalink

A-SMGCS

Air Traffic Management System

Airline Operations

Airport Operations

Remote Control forMonitoring System

Interfaces to otherAirport Systems

Multilateration SpecificationsEquipment Outdoor Indoor Specifications: Equipment: Equipment:

Temperature -40 to 55o C 10 to 35o CRelative Humidity 5 to 95%, 10 to 80%,

non-condensing non-condensing

Wind Speed 95 kts (operation), 120 kts n/a(survivability)

Lightning Protection All external interfaces

Input Power Voltage 18-30 VDC or 100-240 VAC +/– 10%

Input Power Frequency 50 to 60 Hz nominal +/– 3%

Power Consumption < 90W w/o heater, < 150W w/ heater

Safety Certifications CSA, cTUVus, UL 60950, EN 55022, 61000, 60215, 60950, IEC 60950, CE

RF Compatibility FCC Part 15, Class B

System PerformanceDependent on system configuration:Transponder Types Mode S, Mode S ES, Mode A/C

RMS Position Error surface: < 5 m(accuracy) airborne: < 30 m

Target Capacity 250 targets

Track Initiation 5 seconds max

Target Update Rate 1–12 seconds (Adaptable)

Probability of Detection >97%

System Latency 250 msec

SSR Interrogation ICAO Annex 10 compliant

Data Output Format ASTERIX CAT 010, 011, 34/48, CD2 (MLAT), Asterix CAT 21 (ADS-B)

Sensis Global Headquarters 85 Collamer Crossings East Syracuse, NY 13057 USA

Phone: +1 315 445 0550 Fax: +1 315 446 2209 www.sensis.com email: info@sensis.com

2/11 © Sensis Corporation 2004-2011

While every effort is made to ensure data accuracy, please note that data may be subject to change.

Reference Transmitter(REFTRAN)

n Synchronizes system timing

n Stimulates system’s self-test functionality

Sensor/Remote Unit (RU)

n Recieves, timestamps and decodes transponderreply signals and ADS-B messages

n Interrogates transponders for identification, altitude and data link (optional)

Surface and Wide Area Surveillance

MultilaterationAirport Surface, Terminal and Wide Area Surveillance

Sensor/Remote Unit

Effective surveillance contributes to increased safety, capacity and efficiency of airspaceand airports alike. Unfortunately, traditional radar alone does not provide the performancerequired to obtain these benefits. Sensis Corporation’s multilateration offers a provensolution to this problem.

Multilateration offers accurate surveillance and identification of all transponder-equippedaircraft in the air as well as on an airport’s surface. It provides highly reliable data forfurther processing by Air Traffic Control (ATC) displays, Advanced – Surface MovementGuidance and Control Systems (A-SMGCS), decision support tools, flow managementsystems and airline/airport operation applications. Controllers receive seamlesssurveillance data which enables increased operations in low visibility conditions andenhances safety.

Certified for ATC use, Sensis multilateration is deployed around the world for surface,enhanced terminal and wide area surveillance. Sensis multilateration has been thesolution of choice for more than 20 locations throughout Europe, Canada and Asia.Additionally, it is a core component of the FAA’s Airport Surface Detection Equipment,Model X (ASDE-X) system which Sensis is installing at 35 airports across the U.S.

Detect theDifference

Surface and Wide Area Surveillance

Multilateration

Sensor #1

Sensor #2 Sensor #3

Solution Arcfor SensorCombination2,3

Transponder Replies

Solution Arc for SensorCombination 1,3

Sensis multilateration, a transponder based system, uses multiplesensors to capture aircraft transponder pulses and calculateposition and identification. Low cost, non-rotating sensors receive,decode, timestamp, and transmit the data from the transponder toa Target Processor (TP). The TP compares the reports to derive thetarget position based on the time of receipt of the signals at eachsensor.

n Improved Accuracy – The multilateration process, with its typical update rate of once per second, allows the multilateration system to provide an accuracy of five meters or better for surface surveillance, and 30 meters or better for wide area surveillance.

n No Additional Avionics Required – An important feature of multilateration is that it works with any transponder-equipped aircraft without additional avionics. Additionally, multilateration supports Automatic Dependent Surveillance – Broadcast (ADS-B) with no equipment modifications.

n Minimal Installation Requirements – Unlike traditional radar, multilateration relies on small equipment enclosures and non-rotating antennas that are installed on existing communication towers, terminals and other structures. Additionally, multilateration sensors can communicate with the TP via a wide variety of communication options.

Multilateration supports ADS-B long squitter with no equipment modification.

Airport Surface SurveillanceSensis multilateration offers an ideal solution for the

complexity of airport surface surveillance. At largerairports, multilateration complements the existing surface movementradar system, providing considerably improved and more reliabledata than that from a single surveillance sensor. For smallerairports that rely on visual surveillance, multilateration provides acost effective surveillance system to enhance safety. The flexibilityin configuring the system allows coverage over the entire airportarea, including the ramp and approach/departure areas, or justthe movement area. Airport vehicles can also be equipped withlow-cost transmitters enabling aircraft and vehicle tracking in asingle system.

BenefitsImproved situational awareness in all weather conditions

Enhanced safety

Reduced runway incursions

Improved airline operations management

Increased capacity

Improved airport efficiency

Terminal and Wide Area SurveillanceSensis multilateration is being used worldwide for

terminal, enroute, and gap filler surveillance. The systemcan cost-effectively scale from small airport applications to cover hundreds of thousands of square miles. The small, low-cost sensorsare easy to install in rough terrain where traditional radar systemsoften experience coverage gaps due to terrain blockage. Sensismultilateration provides controllers with positive identification, highupdate rates and accurate positional information in all weatherconditions.

BenefitsBetter accuracy and update rate than existing radar systems

Adaptable, low altitude coverage in challenging environments

Low maintenance, low power consumption for remote sites

Sensis multilateration accurately tracks targets at both

low and at high altitudes simultaneously. Sensismultilateration is being used to track flights in a number ofchallenging air surveillance applications including terminal areasurveillance and precision runway monitoring (PRM) for ATC,military range surveillance and enroute flight following.

Sensis multilateration provides a bridge to the future of surveillance– ADS-B. Each multilateration sensor is equipped to provide bothmultilateration and ADS-B positions. Installing multilateration in awide area configuration establishes the infrastructure required fortoday‘s surveillance needs as well as tomorrow’s ADS-B equipage.

Sensis multilateration provides controllers with positiveidentification, high update rates and accurate positionalinformation in all weather conditions.