Communications: directive radio wave systems and devices (e.g. – Radar for meteorological use
Patent
1991-06-13
1992-11-17
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Radar for meteorological use
G01S 1395
Patent
active
051647311
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.
REFERENCES:
patent: Re33152 (1990-01-01), Atlas
patent: 3646555 (1972-02-01), Atlas
patent: 4223309 (1980-09-01), Payne
patent: 4649388 (1987-03-01), Atlas
patent: 4835536 (1989-05-01), Piesinger et al.
Honeywell, Primus 870, Turbulence Detection Weather Radar.
ARINC Characteristic 708-5 Airborne Weather Radar, Aeronautical Radio Inc., 2551 Riva Rd., Annapolis, Md. 21401, Jan. 11, 1988.
Merrill I. Skolnik, Introduction to Radar Systems, Second Edition, pp. 498-507.
Borden Scott C.
Mathews Bruce D.
Stevenson Joseph
Tubbesing T. H.
Westinghouse Electric Corp.
Williamson J. K.
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