Sensis Wins Contract for Military Utility of ADS-B

DEWITT, NY - April 20, 2000 - Sensis Corporation was awarded a Phase I Small Business Innovative Research (SBIR) contract to develop an Automatic Dependent Surveillance - Broadcast (ADS-B) system for the US Navy. ADS-B equipped aircraft automatically broadcast identification and positional information - latitude and longitude, velocity, altitude and heading using the global navigation satellite system. The system will have both a secure mode for military operation and a non-secure mode for civilian surveillance. Sensis will also evaluate how the proposed ADS-B system can be used to provide operational and war fighting improvements.

Sensis has extensive ADS-B sensor and data communications expertise. The Federal Aviation Administration's (FAA) Safe Flight 21 Program used a Sensis ADS-B ground station in the Ohio Valley ADS-B Trials in Wilmington, OH. The ground station received Mode-S squitter transmissions from ADS-B equipped aircraft at ranges well in excess of 100 nmi. Sensis is currently deploying additional ADS-B sensors at Memphis International Airport. This effort is in conjunction with a FAA Safe Flight 21 contract to install a Multistatic Dependent Surveillance system for airport surface surveillance using transponder multilateration and ADS-B.