Award Data

Linac Inc., R&D group, proposes a completely new approach to provide Doppler frequency offset for a microwave bandwidth (higher than 16 GHz) laser radar signal. The proposed achromatic optical Doppler frequency modulator (AODFM) system uses existing technology of holographic achromatic phase modulation. The modulation is carried out by specially configured three cascaded gratings. The input and ...

Because of the scarce network bandwidth available on the wireless links, data compression plays a critical role in the wireless system design. We propose to evaluate existing public-domain and commercial lossless data compression packages in the context of wireless networking. The specific criteria used include compression efficiency, compression speed, memory usage, and ease of being incorporat ...

Broadband signal processing is important for interpreting signals received from active sonar transmissions. The traditional approach to processing broadband signals in the sonar literature is to assume a harrowband condition that Justifies the use of narrowband signal processing. RTcently there has been renewed interest in avoiding the narrowband assumption and in actually using techniques th ...

This small business innovative research phase I project from Sagent Corporation addresses the need to develop and demonstrate high-performance nonlinear, adaptive, and hybrid systems cdontrol technology for precision multi-target, multi-platform fire-on-the-move applications including armor, air defense and aircraft system applications. Reliance on incremental improvements in linear, fixed-point ...

Ultra-wideband (UWB) synthetic aperture radar (SAR), in the UHF frequency range, provides an ability to perform all weather wide area surveillance, terrain mapping, target ID, and geolocation, by imaging the environment under tree canopies, with ground and foliage penetration. The objective of this Phase I effort is to demonstrate novel robust analysis approaches to SAR focusing, radio frequency ...

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Attempting to reduce cost and improvce performance, the development of GPS-inertial system continues. Several component tradeoffs are under consideration. We believe, however, that the system design should be included in the development. A modified configuration will bring excellent cost benefits. In addition, a problem exists with performance degradation of existing systems in the battlefiel ...

A synthetic aperture radar (SAR) micro sensor of extremely low weight and power, and small size is proposed. The sensor offers a low-cost, all-weather/all-visibility-conditions high-resolution imaging capability from a small UAV to individuals and small units for surveillance and targeting purposes. In addition to being able to see through smoke, fog, etc. and its around-the-clock mission capabi ...

An improved computer module for representing rotor flow field effects on flight dynamics response is proposed for development. This model extends finite-state dynamic inflow models to address current limitations in predicting rotorcraft off-axis response to control inputs. The software module also includes features for representing rotor operation in the vortex ring state. The model is novel ...

An innovative combination of key contributors to ejection seat/capsule aerodynamic modeling, controller and sequencer design, and biodynamic simulation are to be integrated under the framework of a commercial software simulation tool for this Phase I project. The use of a commercial simulation package enhances the cost effectiveness of the software development, since support of graphics capabilit ...