Award Data

This project is the development of a single crystal underwater acoustic modem transducer for Unmanned Underwater Vehicles (UUV) which is compact in size, operates at low to moderately low center frequencies, in a broad band frequency range to accommodate state-of-the-art binary, FSK and spread spectrum signaling schemes that promote covertness. The device exploits the high coupling coefficient an ...

The overall goal of our Phase II project is to demonstrate innovative, scalable high-performance machining (HPM) processes the Navy needs for thin-web, large-pocket Ti-6Al-4V firewalls and bulkheads. The anticipated benefits of the program are the ability to fabricate unitized structures resulting in reduced labor costs, part count and improved quality while achieving desired weight requirements a ...

Underwater acoustic modeling plays an essential role in the design, development, test, and operation of sonar systems. Active acoustic clutter can increase the sonar false alert rate or equivalently decrease the probability of detection/classification, and is a key issue in the development and utility of active sonar systems. The ability to predict reverberation and clutter is inseparably tied to ...

The use of Net-Centric Enterprise Services (NCES) to provide ubiquitous access to information within the Department of Defense presents challenges in both the design and implementation of these systems. The need to provide information to the war-fighter in a timely manner while maintaining the security of the system in challenging environments far exceeds the capabilities of present day enterpris ...

This work seeks to develop the ultra-low-frequency performance of spin-dependent-tunneling magnetic-field sensors through the use of novel thin-film materials to lower the frequency-dependent excess noise and increase the signal response. What is proposed is an investigation of novel thin film materials recently discovered to have high magnetoresistance effects. Magnetic sensor devices will be f ...

U.S. Navy intends to modify transport craft hull forms in-situ in order to reduce hull hydrodynamic drag down to level that allows the 30% increase of their top speed. The project is emphasized on the craft LCU 1600. For such increase, designers must cut roughly a half of the craft total drag. This would require reduce both friction and wave resistance. Mechmath LLC plans achieve the friction redu ...

TAC PROPOSES TO CONDUCT A STUDY TO EVALUATE THE COMPARATIVE EFFECTIVENESS OF VARIOUS FORWARD-LOOKING AUTONOMOUS SENSORS AND ALGORITHMS FOR TLAM-C. THE CURRENT TLAM-C USES A TERRAIN MAPPING RADAR ALTIMETER AND CORRELATES THE SENSED AREA AT KEY WAYPOINTS WITH A STORED DIGITAL REPRESENTATION OF THE TERRAIN AREA AT THE WAYPOINTS TO PROVIDE MID-COURSE AND TERMINAL GUIDANCE CORRECTION TO THE INERTIAL NA ...

Two technologies with nearly perfect complementary capabilities are combined in this project. Univer-sity of Virginia has developed the Tactical Interface for Monitoring and Retargeting (TIMR), based on recent Tactical Tomahawk work. This provides decision aiding and an underlying simulation platform, but by design provides no autonomous planning capability. SIFT has developed PlaybookT, an int ...

We will address the requirement for fault identification and isolation in fiber optic data links by incorporating an optical time domain reflectance (OTDR) functionality into the transceiver module. Our approach is to monolithically integrate a high speed photodetector that will sense reflections from discontinuities in the optical channel, with the 850nm VCSEL which transmits the signal.