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Mayflower Communications proposes to substantially improve the reliability of Global Positioning System (GPS) receivers under jamming using a combined adaptive antenna and temporal filter solution that incorporates low cost, small size, and low power requirements. The objective is to provide up to 50 dB of additional interference protection for both military and commercial GPS systems at an affor ...

SatCon Technology Corporation proposes to develop the next generation power controller module aimed at the integrated control and power functions desired for the Power Electronics Building Block (PEBB) which has broad goverment and commercial interest. Building on power hybrid technology advances made by SatCon during participation in Chrysler Corporation's "Patriot" Hybrid Electric Race Car Prog ...

The success of DoD's thrusts in Global Surveillance and Precision Strike depends critically on the ability to perform Automatic Target Recognition (ATR) and Hostile Target Identification (HTI). The technologies of modeling, sensor data fusion and adaptive intelligent image processing are key to the success of ATR and HTI. An innovative approach to intelligent model-based image processing and tar ...

We propose here new methods for system identification and active feedback control of axial flow compressors under conditions of incipient rotating stall and surge in the presence of inlet distortions. The nonlinear Moore-Greitzer model of rotating stall, which has proven useful for both simulation of rotating stall/surge dynamics of axial compression systems and for control design studies, will b ...

The detection and recognition of man-made objects under foliage conditions requires the use of VHF/UHF ultra-wideband (UWB) radars such as P-3/SAR system developed by ERIM for NAWC/AD and DARPA. At low frequencies and long wavelengths, most of the scatters are in the Rayleigh scattering region and their RCS is low, which enables foliage penetration. However, this also results in a small number o ...

Modern fligt control systems rely on hardware redundancy to overcome failures of sensors and actuators. This is an expensive approach which does not make use of analytical redundancy present in a flight control system. Analytical redundancy is achieved by comparison of sensor outputs over time and across sensors using physical and identified models. We propose here methods to detect failures us ...

A radical, high performance system design concept for UAV missions is proposed. Its characteristics derive directly from propulsion and power generation capabilities inherent in microturbine technology under development at MIT. The proposed vehicle configurations is an oblate spheroid, giving a high package volume with sufficient fuel capacity for hover duration of about one hour. Thrust from m ...

A feasibility study for the development of a Fuel-to-Aerostat Shuttling Transporter (FAST) is proposed. This powered vehicle would transport liquid fuel from the ground to an aerostat, guided by the non-powered control tether. The fuel carried to the aerostat will be used to produce electricity by running existing liquid-fueled generators on-board the ship. By allowing for the delivery of fuel ...

Providing the commander with timely, accurate, and meaningful information is a critical problem in the design and deployment of battlefield information management systems. A methodology is needed for presenting the critical information in a situationally-relevant manner, to support the commander's visualization of the battlefield and assessment of tactical alternatives. We propose a hybrid solu ...