Method for azimuth scaling of sar data and highly accurate processor for two-dimensional processing of scansar data
CA 2199772 C · Owner: Deutsche Forschungsanstalt Fur Luft- Und Raumfahrt E.V. · Inventors: Moreira, Alberto; Mittermayer, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for azimuth scaling of SAR data without interpolation, SAR raw data in azimuth are multiplied with a phase function H5(fa;rO), where fa denotes the azimuth frequency and rO denotes the range to a target point. An azimuth modulation of the SAR data is subsequently adapted with the phase function H5(fa;rO) to that of a reference range in a manner so that the, azimuth modulation no longer depends on the range and is transferred into a pure quadratic phase modulation in order to attain an azimuth processing with a very high phase accuracy by, using deramping with an exactly linear frequency modulation and azimuth FFT.
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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 March 12, 1997 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2019.
- 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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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.