Analysis of MEMS-based Acoustic Particle Velocity Sensor for Transient Localization

Report No. ARL-TR-5686
Authors: Latasha Solomon, Leng Sim, and Jelmer Wind
Date/Pages: September 2011; 16 pages
Abstract: The U.S. Army Research Laboratory (ARL) has made tremendous progress in the area of acoustic target tracking. Current systems are reliable and provide actionable situational awareness, but they are often bulky. In an effort to reduce size, weight, and power, ARL has evaluated the feasibility of replacing our current acoustic sensor with a three-dimensional (3-D) acoustic particle velocity sensor based on micro-electro-mechanical systems (MEMS) technology. This sensor has the potential to simplify sensor setup and maintenance, as well as reduce the computational requirements of the signal processing software. This effort validates specified frequency response, identifies sensor limitations and capabilities, and quantifies sensor localization accuracy. Experimental results conducted in both ARL's anechoic chamber as well as outdoor environments are analyzed.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2011