Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar
Reexamination Certificate
2005-07-19
2005-07-19
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Synthetic aperture radar
C342S022000, C342S02500R, C342S02500R, C342S089000, C342S118000, C342S134000, C342S159000, C342S165000, C342S173000, C342S175000, C342S188000, C342S192000, C342S195000, C342S196000, C342S352000, C342S358000, C244S158700, C375S340000, C375S343000
Reexamination Certificate
active
06919839
ABSTRACT:
A synthetic aperture radar (SAR) compensates for ionospheric distortions based upon measurement of the group delay, particularly when operating in the VHF/UHF band. The SAR is based upon a multi-input multi-output (MIMO) technique for estimating the effective ionospheric conditions, which is referred to as the group delay approach. The group delay approach is divided into a 1-dimensional (range) approach and a 2-dimensional (range and cross-range) approach. The group delay measures the effective or observed TEC, which is used to reduce the ionospheric distortion.
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Anderson Paul D.
Beadle Edward R.
Dishman John F.
Ganthier Emile
Richter Steve
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Gregory Bernarr E.
Harris Corporation
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