Ultrasensitive Directional Microphone Arrays for Military Operations in Urban Terrain.

Okandan, M. ; Parker, E. P. ; Hall, N. A. ; Peterson, K. ; Resnik, P.

Technical Information Center Oak Ridge Tennessee

关键词: Acoustic measurements;    Sensors;    Military equipment;    Microelectromechanical systems;    Sensitivity;   

RP-ID  :  DE2008934861

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports 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).