Joseph L Stevenson

US Patent:

51647311, Nov 17, 1992

Filed:

Jun 13, 1991

Appl. No.:

7/714135

Inventors:

Scott C. Borden - Greenbelt MD
Bruce D. Mathews - Catonsville MD
Joseph Stevenson - Catonsville MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01S 1395

US Classification:

342 26

Abstract:

The present invention is a radar system that detects turbulence by breaking a range cell return down into spectral segments using an FFT processor. The standard deviation of the spectrum is determined and the system compares that standard deviation to a reference threshold of a non-turbulent return if the signal is above noise. If the threshold is exceeded, the range cell is marked for turbulence display. Once the turbulence display is completed it is overlayed on the weather display. To improve matching of the feature size to the variance calculation the invention performs both range and azimuth post detection integration subsequent to the FFT but before variance calculation.

US Patent:

49789600, Dec 18, 1990

Filed:

Dec 27, 1988

Appl. No.:

7/290205

Inventors:

Gary L. Newcomb - Catonsville MD
Timothy E. Brandt - Hanover MD
Scott C. Borden - Greenbelt MD
Joseph Stevenson - Catonsville MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01S 1389
G01S 1390

US Classification:

342 25

Abstract:

A system for real beam radar ground mapping using a monopulse antennae to determine off-boresight angle of target returns. Off-boresight angle is converted to azimuth bins. After processing, return energy for each contiguous azimuth bin of an illuminated area is dumped during a respective "look" of the antenna.