Award Data

The proposed work will address the core physics underlying acoustic reverberation as related to properties of the ocean environment and properties of the acoustic sources, receivers and waveforms that make up ocean-going acoustic systems of interest to the U.S. Navy. Present day active acoustic system performance models, which contain reverberation models as an essential component, are over twenty ...

Autonomous systems acquire massive amounts of sensor and communications data over the course of their potentially lengthy missions. Ideally, such systems would incorporate current and historical data into their decision making processes to generalize from experience and avoid repetitive errors. However, the sheer quantity of data gathered can make storage and processing of an unfiltered data strea ...

Continuous physiological monitoring can provide invaluable insight into the status of the person monitored. The right sensors can provide important information related to both the physical and mental state of the subject. Although sensing modalities and the information that can be gleaned from them is a fairly well advanced science, the sensors themselves lag behind in terms of being sufficiently ...

Wearable human state monitors must be mechanically invisible to greatest degree possible, to maximize comfort, wearability, hygiene and signal quality. These device attributes are aligned with the goal of closely coupling devices to the body for best-quality signal capture and continuous health monitoring by seamlessly integrating with the body, under clothing and gear. They must be robust to dyna ...

For Unmanned Aircraft Systems (UAS) to operate seamlessly in both the U.S. National Airspace System (NAS) and abroad, it will be crucial that they possess a sense-and-avoid (SAA) capability that can ensure safe operations among maneuvering, non-cooperative aircraft. Numerica Corporation, in partnership with Johns Hopkins University, proposes to develop a set of algorithms to model the uncertaintie ...

As strontium and other alkaline-earth metals become increasingly attractive for ultracold-atom applications, there is a growing need to develop compact, robust systems for cooling, trapping, and studying these elements. In this proposal, ColdQuanta will team with Dr. Jun Ye at JILA and the University of Colorado at Boulder to develop a portable, turn-key system that can produce, utilize, and optic ...

The low weight, excellent durability and heat resistance of ceramic matrix composites (CMCs) make them attractive materials for use in aircraft engine hot sections, where improved overall engine efficiency can be realized. Nevertheless, the interlaminar properties of CMCs must be well understood before CMCs can realistically replace metallic superalloys in engine hot sections, and no standardized ...

Thermophotovoltaic (TPV) energy conversion produces electrical power from heat energy using, in its most basic form, a thermal emitter and a photovoltaic converter. Since these systems typically have no or few moving parts, they provide a long term maintenance-free power generation. Key factors affecting performance include matching the emitter spectrum more precisely to the conversion characteris ...

This project is focused on the development of a new generation of GaN-based transistors with breakdown voltages in excess of 1kV that can be used in the demonstration of power amplifiers operating at 1 GHz with power added efficiencies in excess of 90%. To achieve this performance, this project will develop new approaches to increase the breakdown voltage of GaN high electron mobility transistors, ...

US troops and equipment are increasingly at risk for irradiation by lasers, whether it be from enemy targeting and ranging systems, designators, or high-energy lasers as weapons themselves. Countering the threat requires detection of the incident laser radiation, the direction from which it is originating, and characterization of its wavelength and temporal profile. Nanohmics Inc., in partnership ...