Award Data

Multi-channel array manifolds are required for wideband AESA applications. In modern solid-state AESA arrays, MMIC-based T/R modules generally utilize digitally-controlled phased shifters to steer the beam on transmit and receive. The given phase value is only accurate at one frequency, and so for wide bandwidths of several hundred MHz (at X-band for example), the beam does not get formed properly ...

Key obstacles to extending OFDM to wireless links and networks at high-frequencies and dynamic channels are inherent low performance to Doppler and power amplifiers operation with high back-off. Other significant obstacles are multipath and impulsive noise. PEARL-OFDM combines a layered architecture with technologies that mitigate such obstacles and enable full-range rates that maximizes connectiv ...

Commercial FPGA programming software tools use logic synthesis tools to route the connections between logic gates, look-up tables, and memory units. Current commercial tools, however, are optimized to maximize operation speed and minimize area and memory utilization. This proposal addresses the needs of the Department of Defense for a solution that provides a means of reducing FPGA power consumpti ...

New forms of data visualization require new ways of thinking about data, how we work with it and what we expect from it. A fundamental dissonance exists between computer memory and human experience. This becomes especially apparent when human, social, cultural and behavioral data are being consulted to help find the optimum course of action. Our approach to data is based upon Bloom, a core server ...

The design and development of piezocrystal sonar transducers is a challenging multidisciplinary and technological effort that spans many fields and skill sets. We look to extend and improve our transducer assembly technologies to reduce cost and implementation time for sonar technology transition and in particular our methods for Active-Passive single crystal ring development and fiber glass wrapp ...

Multifunctional materials would alleviate longstanding problems in composite structures associated with multiple types of damage mechanisms such as mechanical/thermal fatigue, microcracking, and impact. CU Aerospace (CUA) proposes an innovative hybrid self-healing composite consisting of a two-part healing agent that is stored in microcapsules and hollow glass fibers (HGF), which are released when ...

Modern naval aircraft can be large in dimensions and may carry a large number of antennas. For many of these systems, the surface area of the platform is in the tens of thousands of square wavelengths. In this case, the use of full-wave solvers to assess the on-platform performance of an antenna or the interaction between two antennas is impractical, both in terms of computing resources required a ...

The RCS of a ship is a key parameter for determining the range at which such ships can be detected and targeted by enemy forces. During the development of a new ship, the Navy spends a great deal of time studying the RCS for a wide variety of configurations. Navy engineers and analysts need to be able to quickly compute the RCS for a proposed ship design and compare the resulting RCS with other de ...

Present thermoelectric devices operate at about 10% of the Carnot efficiency, whereas the efficiency of compressor-based refrigerators is larger than 30%. An increase in the thermoelectric figure of merit ZT above 3 is needed before thermoelectric technology can replace current air conditioning technologies in many applications. Recent models have predicted that ZT can reach 6 in metal/HgCdTe supe ...

The capability to reliably and remotely detect, identify and track biological aerosols is a critical need for the United States military. EPIR Technologies proposes to improve this capability by making use of the infrared signatures from biological aerosol broadband Mie scattering, comprising both mid and long wavelength infrared (MW/LWIR) components, as well as a potential polarization component. ...