Countermeasures for Acoustic Cloaking(1001-346) Navy SBIR FY2009.1 Sol No.: Navy SBIR FY2009.1 Topic No.: N091-042 Topic Title: Countermeasures for Acoustic Cloaking(1001-346) Proposal No.: N091-042-0112 Firm: TRITON SYSTEMS, INC. 200 TURNPIKE ROAD Chelmsford, Massachusetts 01824 Contact: Keith Higginson Phone: (978) 250-4200 Web Site: www.tritonsys.com Abstract: Triton Systems, Inc. responds to the US Navy need to model and assess the potential threat of acoustic cloaking to avoid sonar detection by the Navy. We will address the Navy need to both address the potential threat, estimating whether acoustic cloaking technology would be feasible within a 5 to 10 year time frame, and to develop suitable countermeasures for the defeat of cloaked objects. On this Phase I program we will focus on acoustic cloaking of submarines against ASW sonar detection and on countermeasures against successful acoustic cloaking. Benefits: Optical and RF metamaterials could have multiple applications. These include lithography, medical imaging equipment and optical diagnostics, and military applications, such as more efficient and compact communications and sensing hardware, greater resolution in imaging and reconnaissance, and stray light correction in infrared telescopes. Acoustic metamaterials may be realizable for cloaking technologies in sonar. Civilian applications could include improved acoustic engineering of living spaces, or to neutralize environmental noise. Return