To help attain the goal of seamless surveillance and identification of aircraft on the airport surface, the Runway Reduction Program (RIRP) has been developing the Airport Target Identification System (ATIDS). ATIDS is a prototype multilateration and Automatic Dependent Surveillance-Broadcast (ADS-B) system which functions with all types of Air Traffic Control Beacon System (ATCRBS) transponders; e.g. new Mode S transponders carried by all TCAS-equipped aircraft and older Mode A/C transponders. ATIDS uses the pseudo random squitters of Mode S transponders to obtain position and identification information. The RIRP team, which includes the FAA Volpe National Transportation Systems Center, Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL) and Trios Associates, Inc., has conducted interference tests at Dallas/Fort Worth Airport (DFW) to quantify the impact that ATIDS would have on that high-use environment. The tests included environmental 1030/1090 MHz measurements, ATCRBS false target investigations, and Mode S reinterrogation tests. This document reports the results of these tests.


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