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Improvements in Measurement of Permeability and Permittivity
Improvements in Measurement of Permeability and Permittivity hot!
Date: Aug-12 2008

Errors associated with reflections can be suppressed.

The two-transmission method is an improved method of determining, from microwave measurements, the complex permeability ...

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Implementing a GPS Waveform Under the SCA
Implementing a GPS Waveform Under the SCA
Date: Apr-01 2008

A continuing development effort focuses on implementation of a Global Positioning System (GPS) waveform under the Software Communications Architecture (SCA). [As used within the ...

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Imaging System for Characterizing Materials and Processes
Imaging System for Characterizing Materials and Processes hot!
Date: Aug-01 2007

A high-performance digital imaging system has been assembled to provide enhanced capabilities for characterizing materials and processes. Highspeed imaging is needed for observation and ...

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Fabrication of Lightweight Armored Doors for HMMWVs
Fabrication of Lightweight Armored Doors for HMMWVs hot!
Date: Aug-01 2007

A document describes a concept for fabricating lightweight armored doors for the Army’s high-mobility multipurpose wheeled vehicles (HMMWVs). Essentially, the concept is to ...

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Digital-Image Data Acquisition System for Turbulent Mixing and Combustion
Digital-Image Data Acquisition System for Turbulent Mixing and Combustion
Date: Oct-03 2008

This system enables visualization of subsonic and supersonic high-speed flows.

An equipment and instrumentation system for high-speed digital image data acquisition and ...

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Detecting Explosives by Use of LIBS
Detecting Explosives by Use of LIBS hot!
Date: Jun-01 2008

Rugged, field-portable units could detect explosive residues at safe distances.

Laser-induced breakdown spectros - copy (LIBS) has been investigated for potential utility ...

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Cracking of Aluminum Panels Repaired With Composite Patches
Cracking of Aluminum Panels Repaired With Composite Patches hot!
Date: Oct-03 2008

Strains have been found to be substantially proportional to crack lengths.

An experimental study of the mechanical behavior of cracked aluminum specimens ...

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Biologically Inspired Processing of Image and Sound Data
Biologically Inspired Processing of Image and Sound Data
Date: Dec-01 2007

A report describes progress in a research program oriented toward developing artificial-intelligence capabilities for processing images and sounds in changing environments. This research focuses ...

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Arcing and Vibration Tests of High-Power Patch Antennas
Arcing and Vibration Tests of High-Power Patch Antennas
Date: Apr-01 2008

Electric-breakdown and vibration tests were performed on one-patch and two-patch versions of a prototype of a patch antenna designed to radiate a continuous- wave ...

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Antenna Electronically Steered Using MEMS Phase Shifters
Antenna Electronically Steered Using MEMS Phase Shifters hot!
Date: Apr-01 2008

An experimental phased-array microwave antenna assembly includes an array of eight patch antenna elements connected to Microelectromechanical System (MEMS) phase shifters, by means of ...

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