Downdraft velocity estimator for a microburst precursor...

Details Downdraft velocity estimator for a microburst precursor... Downdraft velocity estimator for a microburst precursor...

G - Physics

01

S

G01S 13/95 (2006.01)

Patent

CA 2125028

A weather surveillance apparatus utilizes a set of beams (1a, 1b; 2a, 2b; 3a, 3b) in an elevation angular sector (0 1; 0 2; 0 3) one beam being offset from the other by a predetermined offset angle. Radar signal returns in each beam are processed to establish an average doppler frequency shift for the signals in the respective beams. An average of the averages and a differ- ence of the averages are determined which are utilized to establish horizontal and vertical wind velocities. These velocities are further processed to determine whether a microburst precursor exists and the location, magnitude, time to impact, and track of any resulting windshear.

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