Multi-sensor target counting and localization system

摘要: A system is provided for detecting the presence of two or more acoustic sources targets such as vehicles that are traveling between an array unattended passive ground sensors, in which sensors each include a phased-array microphone and processing to determine bearing target. The bearings from pairs these subtracted one other provide line difference “delta” indicator target close pair. tripwire threshold indicating set when absolute value this greater than, instance, 150°, with being 180° on sensors. By outputs multiple can be ascertained since will result detected only within small controllable lateral distance off