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Expired Canadian patentCanada

Extended sar imaging capability for ship classification

CA 1269155 C · Owner: Grumman Aerospace Corporation · Inventors: Boles, Sol

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Abstract From the Canadian patent

Capability is provided using coherent synthetic aperture radar (SAR) techniques for substantially extending the useful range for producing 3 scaled high resolution orthogonal image projections on a CRT of a translating ship under the influence of rotational motions arising from sea state conditions, for the purpose of ship classification and weapon delivery from an airborne platform at long stand-off ranges. This advantage is brought about by determining image coordinates on the basis of range, doppler and doppler rate, measurements of individual scatterers and from ship angular rotational velocities derived from a weighted multivariate regression solution to doppler processed …

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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

  • Granted May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 11, 1987
GrantedMay 15, 1990
Term endedMay 15, 2007
Patent numberCA 1269155 C
Classification (IPC)G01S13/90

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedMarch 11, 1987Patent grantedMay 15, 1990Term endedMay 15, 2007

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.