Award Data

Operation of heavy equipment results in the generation of high sound levels. These sounds (exhaust from diesel or turbine engines, clatter of vehicle parts and cargo, movement of joints, etc.), when taken together result in a characteristic acoustic signature. Depending on terrain and environmental conditions this sound may carry several kilometers. This unintentional noise offers an opportunit ...

A quality simulation which allows a user to simulate the acoustic emissions in a multi-source environment and then study the effects these conditions have on a set of acoustic sensors would be of great value. As acoustic sensors technology continues to advance with robust algorithms for detection, tracking and identification as well as high performance hardware providing real-time operation, thes ...

Acoustic sensors can be used to detect ground and air combat vehicles at extended ranges under good environmental conditions. When installed on a vehicle, eliminating or reducing self noise and interference become the critical issues. SenTech proposes to adapt an existing sensor system to meet TACOM's requirements. An eight - element microphone array will be designed, with rugged microphone moun ...

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Control systems that stabilize the operation of a compressor around the surge line have been demonstrated in controlled laboratory conditions on fixed speed compressors. Jet engine manufacturers are considering this technology for improving engine performance and operability by reducing the compressor surge margins that are currently built into engine control logic. To demonstrate this technolog ...

Spectral Sciences, Inc. proposes to adapt the Environmentally Oriented Systems Atmospheric Effects Library (EOSAEL) to the Microsoft Windows Environment. The Windows EOSAEL (WinEOSAEL) package will reside on and execute from a CD-ROM running under Windows on an Intel 486-based microcomputer platform. In Phase I, plans for front ends for each of the 26 EOSAEL modules and 4 EOSAEAL WAVE modules wi ...

Physical Sciences Inc. (PSI) proposes to show the feasibility of using a novel, spectrally-selective IR imager for the passive standoff detection of chemical agents and hazardous chemicals. The concept is based on the insertion of a tunable etalon into the field-of-view of an IR imaging system. The approach takes advantage of recent advances in the development of staring IR focal plane arrays, w ...

This project applies a combination of Artificial Neural Networks (ANN), Genetic Algorithms (GA), and CAD software to the problem of optimum armor design. Previous work for TACOM has established the efficacy of ANN/GA as applied to the problem of 1-D armor design. This new work will extend the concept to full 3-D vehicle geometries (CAD models). The CAD part of the code will handle the 3D data d ...

The proposed effort is directed at achieving Automatic Target Cueing (ATC) performance at levels which are essential for near term system deployment. The performance required for deployment is beyond the capability of current systems. The design emphasis is to have robust performance under a full range of operating conditions, and to use techniques which lead to efficient real time implementatio ...

CYTEL proposes to develop a novel system for robust, high performance identification of ground vehicles from acoustic emissions. Hallmarks of this approach include the identification of an optimal wavelet decomposition for use in extracting robust multidimensional features from the acoustic emission. These wavelet-based features will be processed by additional feature post processing algorithms ...