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Not Available Active Magnetic Bearings (AMBs) with their ability to electronically manipulate rotor system dynamics, add damping as required and operate without lubricants offer an attractive alternative to conventional liquid lubricated bearing systems, especially in flywheel energy storage (FESS) devices, such as are planned for future land based combat vehicles. However, offsetting the many a ...

Not Available Vector waveform estimation theory implies that a GPS signal processor be constructed as a centralized estimator, in which inter-path statistical information is utilized in extracting state dynamics information from the spread spectrum signals. TISI has developed and implemented such a scheme, known as Integrated Demodulation Navigation (IDN), which addresses robust carrier phase tra ...

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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