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Not Available A Piezoelectric Spherical Pointing System (PSPS) is proposed for electric microsatellite thrusters. This two-axis pointing system uses a single spherical shell that allows direct bearing support, actuation, and position measurement from a single spherical surface. When compared to a classical nested gimbal design the PSPS; (1) requires fewer parts, (2) needs fewer flex cables and li ...

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Not Available We propose a comprehensive program to develop a mathematical characterization of clutter environments in SAR imagery. In contrast to conventional characterizations of SAR clutter, which use simple statistical models for targets and background to predict the receiver operation characteristics of front-end detectors (e.g., CFAR algorithms), we develop a more general notion of clutter ...

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Not Available We propose a unique design approach for a White Light Analyzer for high resolution measurements of polarization scattering in fiber optic components and devices. In Phase I, we will demonstrate an unprecedented signal measurement dynamic range exceeding 10,000:1 or 80 dB. Such performance represents close to a tenfold improvement over existing technology; and is highly suited for an ...

DESIGN AND FABRICATION OF SOLID-STATE DIRECTION-INDICATING APPARATUS, WITH TILT-IMMUNITY, THAT PROVIDES AN AUDIBLE OR TACTILE INTERFACE WITH THE USER. REDUCED SIZE TO ALLOW ENCAPSULATION IN A TYPICAL WALKING CANE. A DEVICE WILL BE DESIGNED THAT WILL PROVIDE A VISUALLY IMPAIRED PERSON WITH AN INDICATION OF HORIZONTAL DIRECTION, WITH RESPECT TO THE EARTH'S MAGNETIC FIELD. THE DEVICE WILLALSO SIGNAL ...

THERE IS A NEED FOR SENSORS THAT PROVIDE DIRECT, REAL-TIME MEASUREMENT OF TOXINS TO SOLVE MAJOR PROBLEMS IN ENVIRONMENTAL MONITORING AND SAFETY. WE PROPOSE TO EVALUATE AND DEVELOP A NEW BIOSENSOR DESIGN THAT COMBINES ADVANTAGES OF IMMUNOASSAY WITH ELECTROCHEMICAL RESPONSE. THE SPECIFIC OBJECTIVE OF THE PHASE I WORK IS TO PROVE THE PRINCIPLE OF ELECTROCHEMICAL ENZYME IMMUNOSENSORS TO DETECT SMALL M ...

THE PROPOSED RESEARCH WILL RESULT IN THE DEVELOPMENT OF AN EXPERT SYSTEM THAT FUNCTIONS AS AN AUTOMATED PROBLEM SOLVING ADVISOR. THIS EXPERT SYSTEM WILL QUERY THE USER TO IDENTIFY CHARACTERISTICS AND REQUIREMENTS OF THE PROBLEM TO BE SOLVED. WHEN NECESSARY, THE EXPERT SYSTEM WILL PARTITION THE PROBLEM INTO SUB-PROBLEMS. IT WILL ADVISE THE USER ABOUT THE MOST EFFECTIVE SOLUTION APPROACHES AND ALSO ...

AN NOVEL INVESTIGATION IS PROPOSED FOR THE POTENTIAL IMPROVEMENT OF THE ARMY'S COMBAT VEHICLE UNITY PERISCOPE. THE NEW DESIGN COULD BE BETTER DESCRIBED AS "ALL ANGLE" INSTEAD OF A WIDE ANGLE; HOWEVER, THIS PROPOSAL USES WIDE ANGLE IN THE SENSE OF EVENTUALLY BEING ABLE TO SEE 180, 270, OR 360 DEGREES WITHOUT POTENTIAL "BLIND SPOTS" OR ABERRATIONS. THE NEW DESIGN WOULD UTILIZE COHERENT FIBEROPTICS W ...