Award Data

COMMERCIAL AND GOVERNMENT SPACE TRANSPORTATION SYSTEMS DEPEND ON GROUND SUPPORT FOR NAVIGATION. THE GROUND SOLUTION CAN BE COSTLY AND MAY PROVIDE LESS ACCURACY THAN NEEDED. A GPS-BASED REAL-TIME AUTONOMOUS SPACECRAFT NAVIGATION SYSTEM IS PROPOSED. AN ALGORITHM WILL BE DEVELOPED WHICH COMBINES GPS-DERIVED POINT POSITION ESTIMATES WITH A PROPAGATED A PRIORI POSITION ESTIMATE. THE POINT POSITIONS ARE ...

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A NEED EXISTS TO MONITOR VIBRATION IN HIGHWAY BRIDGES. IT IS DESIRABLE TO MONITOR MANY POINTS ON THE BRIDGE. THE CURRENT PROBLEM IS THAT SENSORS MUST BE WIRED TO A CENTRAL LOCATION. WIRE IS DIFFICULT TO INSTALL AND TO MOVE. THE SOLUTION IS TO COLLECT SENSOR DATA BY RADIO. A SYSTEM EXISTS THAT ELIMINATES WIRE. IT GATHERS SENSOR DATA TO A CENTRAL LOCATION BY RADIO. THE SYSTEM'S UNIQUE FEATURE IS THA ...

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USCG SOLICITATION 90-CG5 SUGGESTS EVALUATION OF KALMAN FILTERING A DIGITAL SIGNAL PROCESSING (DSP) TECHNIQUE, TO IMPROVE GEODETIC POSITIONING PROVIDED BY SINGLE CHAIN, AND EVENTUALLY, MULTICHAIN LORAN RECEIVERS. A DSP TECHNIQUE COMPARABLE TO KALMAN FILTERING HAS ALREADY BEEN IMPLEMENTED ON A SINGLE CHAIN LORAN RECEIVER, RESULTING IN SUBSTANTIAL GEODETIC POSITIONING IMPROVEMENTS IN NOISY, DYNAMIC E ...

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BLADDER TYPE DEVICES ARE USED TO MITIGATE FLUID LOSSES FROM RUPTURED STORAGE DEVICES.

A NEED EXISTS FOR A COMPACT, PORTABLE SYSTEM CAPABLE OF MEASURING DYNAMIC STRESSES INDUCED BY HEAVY TRUCKS IN THE STRU- TURAL MEMBERS OF BRIDGES. USE OF STATE-OF-OF THE-ART ELEC- TRONIC CIRCUITRY NOW ALLOWS CONSTRUCTION OF A HYBRID ANALOG-DIGITAL INDICATOR THATCAN DISPLAY THE PEAK STRESSES A BRIDGEEXPERIENCES BY USING DATA FROM STRAIN SENSORS ATTACHED TO THE BRIDGE. THE FEASIBILITY OF BUILDING SUC ...

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SUMX CORPORATION HAS INVENTED AND DEMONSTRATED CONCEPTUALLY NEW AND INNOVATIVE COATINGS FOR CORROSION PROTECTION. SUMX PROPOSES TO TEST AND DEVELOP THESE COATINGS FOR USE ON STEELS AND STRUCTURAL MATERIALS IN CHLORIDE ENVIRONMENT SUCHAS MIGHT OCCUR IN TRANSPORTATION SYSTEMS. THE CORROSION RESISTANCE AFFORDED BY THIS METHOD IS BASED ON ELECTRON TRANSFER BETWEEN THE METAL AND IMMOBILIZED REDOX CENTE ...