Intrusion detection, tracking, and identification method and apparatus

摘要: Overlapping range rings from a pair of non-scanning radar or sonar transducers creates grid structure within surveillance area defined by their overlapping beam widths. Using PN coded transmission signals and doppler signal processing, intruder targets are detected, located, tracked as they move throughout the structure. Intruders identified comparing movement pattern to those known intruders. Three dimensional areas can be monitored using three more transducer sites.