Raytheon Company

Other

Ronald B Campbell, Jr

James C Fletcher

James A Thomson

Wayne H Keene

David J Wilson

Albert V Jelalian

Thomas R Lawrence

William W Shrader

Charles M Sonnenschein

Michael C Krause

Werner K Dahm

Robert M Huffaker

James W Bilbro

Harold B Jeffreys

A radar system including an azimuthally scanned radar wherein the radar receives echo signals during each of a succession of azimuthally scanned directions of the radar receiving beam. Sequences of samples of data of received echo signals are stored with sets of samples relating to a common range being utilized for developing weighting factors for weighting received echo signals as a function of range. Thereby, dynamic fluctuations in signals strength because of clutter are reduced.

Radar system with specialized weighting

A digital MTI radar wherein, after an initial period, differences between the composite video signal of a present range sweep and a prediction of the composite video signal of such range sweep are digitized by an analog-to-digital converter.

Digital MTI radar

A system for remotely measuring velocities present in discrete volumes of air in which a CO.sub.2 laser beam is focused by a telescope at such a volume, a focal volume, and within the focusable range, near field, of the telescope. The back scatter, or reflected light, principally from the focal volume, passes back through the telescope and is frequency compared with the original frequency of the laser, and the difference frequency or frequencies represent particle velocities in that focal volume.

Focused laser doppler velocimeter

Growing community of inventors

Sudbury, MA, United States of America

Ronald B Campbell, Jr