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We propose to demonstrate the feasibility of fabricating a phototransistor using the A1xGa1-xN material system. The proposed phototransitor is based on a GaN-A1xGa1-xN heterojunction which exhibits a 2-D electron gas conduction when a bias is applied on the source-drain terminals. The device is maintained in a nominally OFF state by applying a reverse bias voltage on the gate terminal. With optica ...

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NAVIGATION OF FIELD MOBILE ROBOTIC SYSTEMS REQUIRES A MEANS FOR THE ROBOTIC SYSTEM TO DETERMINE ITS ABSOLUTE LOCATION. THE USUSAL MEANS IS TO USE A VEHICLE INTERTIAL GUIDANCE SYSTEM WHICH IS PERIODICALLY UPDATED BY A GPS OR LORAN C RECEIVER. UNFORTUNATELY, GPS AND LORAN CAN ONLY PROVIDE ABSOLUTE POSITIONAL ACCURACY TO WITHIN 5 METERS OR SO WHICH LIMITS THE COMBINED INS/GPS/LORAN SYSTEM TO ABOUT TH ...

Moore's law states that computing performance doubles every 18 months. While this has held true for 40 years, it is widely believed that this will soon come to an end. Increases in performance coincide with decreases in scale on the computer platform. Dueto the small scale of computer components, both interference effects are starting to play a role in the development of new components. This impli ...

This proposal describes the design and creation of an interface for controlling multiple UAVs in a real-time situation. Named the Uninhabited Air Vehicle Management Interface (UAVMI), it is centered on a 3-dimensional graphical representation of theoperational geographic area. The operator is able to move a 3D cursor around within this geographic volume, selecting groups, paths, and targets in 3D ...

Composite Matrix Corporation proposes the development of a revolutionary new class of metal matrix composites (MMC) based on corrosion-resistant copper alloys and continuous fiber reinforcement producible at low cost using methods based on traditionalinvestment casting. The continuous-fiber structural preforms can be produced economically by a rapid laminating process. The calculated density, ba ...

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The proposed effort analyzes five spectral imaging radiometer concepts with the goal of developing an infrared spectral imaging radiometer (IRSIR) for use in high performance aircraft. The desired performance characteristics for this IRSIR are: high optical throughput, a small physical package, and 0.5 to 1.0 percent spectral resolution over the 0.2 to 12 um range at frame rates of 30-100 frames p ...