Method and apparatus for doppler velocity de-aliasing
CA 2036841 A1 · Owner: Raytheon Company · Inventors: Wieler, James G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.