Award Data

Key obstacles to extending OFDM to wireless links and networks at high frequencies with dynamic channels are inherent low performance to Doppler and power amplifier operation with high backoff. Other significant obstacles are multipath and impulsive noise. PEARL provides a solid communications infrastructure with support for incremental relevant capabilities including TRANSEC and LPD/LPI. For this ...

Next-generation ground-based BMD radar is anticipated to employ a scalable architecture with multiple low-cost transportable arrays employing hundreds of thousands of elements per array. Low-cost analog array panels are to be employed in the array, and will typically contain a digital receiver/exciter (DREX) behind a subarray group of typically 64 or 256 elements. The combination of element-level ...

Key to phased arrays that can scale to high frequencies, bandwidth and large apertures is an architecture that enables full digital beamforming and large-array performance with minimum electronics per element. Out of the three proven beamforming methods for phased arrays: analog, conventional digital and spread spectrum digital beamforming (SSDBF), just the latter scales well to large arrays at hi ...

Experimental evaluation of the electromechanical properties of relaxor piezoelectric single crystals under stress, thermal, electrical bias conditions is proposed through the use of various dynamic and static evaluation methods. The proposed phase I effort concentrates on evaluation of properties of PMN-PT using resonant bars, and Lumped-Parameter (L-P) dumbbell resonators under pressure loading ...

Development and production of materials to serve as quality control standards during evaluation of candidate materials for IPE and ColPro Acquisition Programs will be accomplished utilizing advanced nanocomposite technology. In our process, polymeric membranes serve as the building blocks for the standard materials. The polymers are hybridized with specific nanocomposite coatings that optimize per ...

This SBIR Phase I project proposes development of a technologically feasible batch process for making nitrocellulose-nanothermite composites in a granular form for the ignition of propellants. The R & D will focus on the determination of burn rates, dynamic pressure profiles and ESD sensitivities of selected Al/CuO/Fe2O3 and Al/Fe2O3/Bi2O3 energetic nanocomposites based on spherical and flake nano ...

Next-generation ground-based BMD radar is anticipated to employ a scalable architecture with multiple low-cost transportable arrays employing hundreds of thousands of elements per array. Low-cost analog array panels are to be employed in the array, and wi

Electronic Support (ES) systems are among the fundamental instruments used for threat detection onboard Navy surface, sub-surface, and air platforms. They are tasked to sense the RF environment, to sort out all emitters, measure key associated parameters, and contribute to a comprehensive situational awareness with respect to all activity occurring in the RF spectrum. As threat systems evolve, num ...