Electromagnetic Environment Measurements of PRT Systems at "TRANSPO 72": Volume VI

Volpe National Transportation Systems Center, Technical Reference Centerhttps://doi.org/10.21949/15268881974PDFTech ReportJamison, Earl E.National Scientific Laboratories, Inc.John A. Volpe National Transportation Systems Center (U.S.)United States. Urban Mass Transportation AdministrationUnited States. Urban Mass Transportation AdministrationTexasAir traffic controlControl systemsElectromagnetic wavesFiresMeasurementPersonal rapid transitSignalsSpectrum analysisDOT-TSC-UMTA-73-15, VI;UMTA-MA-06-0031-73, VI;PB-233 197An X-Y plot is made of the radiated electromagnetic signals and noise between 1 KHz and 50KHz at each of the four Personalized Rapid Transit (PRT) sites at Dulles International Airport. The PRT Systems were operated simultaneously in an effort to determine if any interaction existed between systems. A spectrum analyzer was used to view the frequency spectrum broadband prior to recording and a Polaroid scope camera was used in conjunction with the spectrum analyzer to photograph signals between 50KHz and 50MHz. This frequency range was sufficiently broad enough to cover all command and control frequencies of the four PRT systems.138