Sensis ADS-B Ground Station Provides Ground Surveillance Infrastructure at Louisville for OpEval-2

DEWITT, NY - November 1, 2000 - Sensis Corporation's automatic dependent surveillance - broadcast (ADS-B) ground station provided the ground surveillance infrastructure for the FAA Safe Flight 21 and Cargo Airline Association OpEval-2 demonstration in Louisville, KY. The purpose of OpEval-2 was to demonstrate ADS-B equipment and procedures and evaluate potential improvements in flight safety and airport capacity. ADS-B equipped aircraft flew detailed flight patterns broadcasting position information - latitude, longitude, velocity, altitude, heading and identification - using the global navigation satellite system. The Sensis ADS-B ground station operated in a dual mode receiving both Mode-S and UAT ADS-B data positional broadcasts. The surveillance information was then fed from the ground station to the shadow air traffic control system located in the TRACON at Louisville Airport.

Sensis ground stations can be used for wide area, terminal and surface surveillance receiving data from Mode-S, Mode A/C and ADS-B equipped aircraft and vehicles using either multilateration and/or ADS-B surveillance techniques. Providing both multilateration and ADS-B in a single sensor offers the ability to supply surveillance today for all existing Mode-S and Mode A/C transponder equipped aircraft while preparing for the transition to ADS-B technology.