Method and apparatus for doppler velocity de-aliasing

Details Method and apparatus for doppler velocity de-aliasing Method and apparatus for doppler velocity de-aliasing

G - Physics

01

S

343/9

G01S 13/95 (2006.01) G01S 13/22 (2006.01) G01S 13/532 (2006.01)

Patent

CA 2036841

Abstract of the Disclosure A method and apparatus for real time de-aliasing of the Doppler velocity data in a weather radar system by using a Process Radials routine which processes every valid range gate along a radar dwell by determining if each range gate is within the Nyquist velocity of either the average of four preceding range gates or data from a Windfield Model. To further enhance the de-aliasing process a Process Dual Scans routine is used prior to the Process Radial routine to de-alias velocity data by comparing velocity data from two scans of different pulse repetition frequencies. Subsequent to the Process Radials routine, a Minimize Azimuthal Shear routine checks velocity discontinuities from azimuth to azimuth. The de-aliased data is transferred to an Update Windfield Model routine for quality checks of the de-aliased velocity data and updating of the Windfield Model. This complete method of de-aliasing the velocity data is performed during the real time operation of the radar system.

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