Award Data

A submarine periscope is modeled as a cylindrical metal reflector poking out of a rough sea. The time variant component of its radar cross section (RCS) behaves as a Swerling Type I target whose magnitude can be reduced by application of RAM. Various options exist for incorporation of RAM into an outer periscope head which can be retrofitted to equipment already at sea. These options include encap ...

Polymeric materials are superior to inorganic and organic crystals for second-order nonlinear optical (NLO) applications because of their low dielectric constant, large nonlinearity, light weight and ease of process-ability. These features have led to tremendous interest in the development of polymeric NLO materials for practical uses. The specific goal of this research is to develop second-orde ...

Inverse Beamforming (IBF) active acoustic processing and analysis concepts are presented to identify the environmental acoustic parameters that degrade active acoustic sonar performance in shallow water due to time dependent multipath arrivals. A fully coupled normal mode model is proposed to be used with measured data to identify environmental parameters that adversely impact active sonar perform ...

The development and implementation of nonlinear, learning control systems for Unmanned Air Vehicles (UAVs) will have three major impacts upon their capabilities; increased survivability, extended range of operations, and reduced development costs. The Learning Optimal Control for Unmanned Supermaneuverable Technologies (LOCUST) system will team Neurodyne, Inc. and Sikorsky Aircraft in the utilizat ...

The use of silicon as the supporting template for nitride growth offers obvious advantages in terms of low cost and the prospects for integration of photonic devices with the mature silicon technology. However, GaN has a large lattice mismatch with respect to Si while SiC is closely lattice matched to GaN. Thus we propose an approach for growing very high quality single crystal films of SiC on S ...

Existing mid-frequency (MP) hull-mounted active sonars can be used for high resolution imaging of submarines and small objects in shallow water (SW) by combining synthetic aperture sonar (SAS) technology with matched field processing (MFP). SAS increases the overall sonar system aperture (from the existing sonar size) to the ship's length (or longer), thereby improving the azimuthal resolution. ...

Probe positioning systems are the limiting factor in scanning probe microscrope performance. Scanning tips are typically positioned by a cylindrical piezoelectric scanner with slow response time and limited precision. OPTRA is proposing an improved sample positioning system that would eliminate the need for lateral proble motion. This system is based on an innovative 2-axis scale based metrology s ...

ORBITEC proposes to develop haptic interface software for virtual reality simulations and assisted telerobotic manipulation. A haptic interface is a device which allows a human 'observer' to explore and interact with a virtual environment or control a remote manipulator using the sense of touch. Presently a number of commercial enterprises have developed haptic interface hardware products, but t ...

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