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Quantum Cascade Lasers (QCLs) are one of the most versatile sources of radiation in the mid-infrared range and have found applications in a variety of fields. Despite their widespread adoption, one of the main hurdles holding QCLs back from large volume manufacturing is the large cost of ownership. While QCLs, like most semiconductor devices based on III-V compounds, can leverage the economies of ...

UUVs have become increasingly important tools in the collection of environmental data. Their unique ability to operate independent of surface vessel conditions allows oceanographic seawater measurements when traditional means is not possible. Historically sensor packages for UUVs have been based on adaptions of ship deployed equipment. Recent development in sensors, such as the Hybrid Flow Through ...

Impact Technologies and Georgia Institute of Technology, with the support of L-3 Communications, propose development of a prototype software tool that promises to significantly reduce the maintenance burden associated with EFV suspension system setup & calibration required for different mission mixes and/or in the event of HSU replacement. While the current procedure requires vehicle track remova ...

In this STTR, OASIS Inc, with partners the Massachusetts Institute of Technology (MIT) and the Applied Physics Laboratory University of Washington (APL-UW) proposes to develop an innovative, interactive submarine acoustic counter detect TDA for use by the Submarine Mission Planners, within the AN/BYG-1. Communicating the environmental and tactical uncertainty is of primary importance when present ...

The current generation of high-frequency active 3-D acoustic imaging systems presents a challenge to the covert use of Underwater Vehicles (UVs) by Special Forces teams. An acoustic intercept capability is needed to detect active signals before the UV is detected, so that it can vector away from the source. The team of Advanced Acoustic Concepts and Montana State University propose to design and p ...

Naval Special Warfare (NSW) teams often use underwater vehicles (UVs) for clandestine transport into highly sensitive littoral areas. The current sonar suites on the existing vehicles do not include a system for detecting and identifying active sonar transmissions, making the vehicle and the SEALs susceptible to detection by active sonar systems on manned and unmanned surface and subsurface surve ...

Information Systems Laboratories (ISL) and Florida Atlantic University (FAU) propose to develop and test a system that uses existing signal processing algorithms coupled with innovative construction technology developed ISL under our E-Field sensor programs and FAU under UUV programs. The Challenge is to develop a small system package with the capability to intercept active threat emissions early ...

Typical acoustic materials rely on embedded continuous mass layer to attenuate low frequency sound. Energy from low frequency sound is not effectively mitigated with these materials unless a substantial amount of mass is added. Thus, standard materials for low frequency noise control tend to be heavy, expensive and difficult to install. A new technology is being developed that utilizes optimized ...

A proposed acoustic pattern recognition system will be based around an array of acoustic sensors to allow localization of sound events and cancellation of background noise. The number of sensors could be adjusted to vary the coverage area depending on the site. The measured signals will provide the input to a sophisticated signal processing algorithm that will separate the acoustic signals into ...

Active imaging systems are used to for imaging in degraded visual environments like that found in marine fog and other environments with a high level of attenuation and scattering from obscurants like fog, rain, smoke, and dust.These systems are still limited in range and resolution. SA Photonics is taking advantage of multiple image enhancement techniques, like wavelength tunability, pulse contro ...