Ultrasensitive directional microphone arrays for military operations in urban terrain.

Hall, Neal A. ; Peterson, Kenneth Allen ; Parker, Eric Paul ; Resnick, Paul James ; Okandan, Murat ; Serkland, Darwin Keith

Sandia National Laboratories

关键词: Membranes;    Acoustics.;    Sensitivity Sensors.;    Acoustic Measurements;    Design;   

DOI  :  10.2172/934861
RP-ID  :  SAND2007-7419
RP-ID  :  AC04-94AL85000
RP-ID  :  934861

美国|英语

来源: UNT Digital Library

【 摘 要 】

Acoustic sensing systems are critical elements in detection of sniper events. The microphones developed in this project enable unique sensing systems that benefit significantly from the enhanced sensitivity and extremely compact foot-print. Surface and bulk micromachining technologies developed at Sandia have allowed the design, fabrication and characterization of these unique sensors. We have demonstrated sensitivity that is only available in 1/2 inch to 1 inch studio reference microphones--with our devices that have only 1 to 2mm diameter membranes in a volume less than 1cm{sup 3}.