Northrop Grumman Systems Corporation

Other

A Dale Parker

William P Braun

Jeffrey M Yang

Charles S Pillsbury, Iv

Stepan S Simonian

Eric B Nakamura

A wideband simultaneous transmit and receive (STAR) subsystem for a radar or communications system including self-interference cancellation and external noise cancellation. The STAR subsystem includes a canceller circuit which digitally prepares a cancellation signal to cancel out leaked or reflected portions of the transmit signal and correlated noise in the receiver signal. The self-interference cancellation can be adaptively configured in a closed-loop mode, and operated open loop in real time to minimize bandwidth limitations and achieve wideband performance. The STAR subsystem also includes an external noise active canceller which greatly diminishes high-power external noise in the receiver signal. The external noise canceller digitally synthesizes a cancellation signal which dramatically improves the signal-to-noise ratio in the receiver. Together, the combined cancellation techniques prevent receiver saturation and preserve receiver sensitivity.

Simultaneous transmit and receive (STAR) subsystem with external noise canceller

Higher-resolution imagery of an airport runway can be provided from the pilot's point of view. Pilot point of view images may be generated using images captured by higher-resolution ground-based cameras. The images from the ground-based cameras are fed to a point of view processor that generates the pilot point of view images using aircraft position information. The pilot point of view images are transmitted to a display on the aircraft.

Image processing system

An apparatus and method for damping vibration of a vehicle part, such as a steering wheel or an electric motor. According to one embodiment, an apparatus ( ) for damping vibration of a vehicle part ( ) includes at least one container ( ) having a chamber ( ) defined by at least one interior wall ( ). The container ( ) is associated with the vehicle part ( ). A plurality of particles ( ) is disposed in the chamber ( ). The particles ( ), when at rest, occupy a first portion ( ) of the chamber ( ) and define an unoccupied second portion ( ) of the chamber. The particles ( ) move back and forth between the first and second portions ( and ) of the chamber ( ) in response to vibration of the vehicle part ( ) and collide with each other and with the interior wall ( ) defining the chamber to damp the vibration of the vehicle part.

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Rancho Palos Verdes, CA, United States of America

A Dale Parker