Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Reexamination Certificate
2008-06-10
2008-06-10
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
C342S02500R, C342S159000, C342S175000, C342S176000, C342S195000
Reexamination Certificate
active
07385553
ABSTRACT:
Described herein are frequency-domain back-projection processes for forming spotlight synthetic aperture radar (“SAR”) images that are not corrupted by the effects of multiple-bounce ghosting artifacts. These processes give an approximately exact reconstruction of the multiple bounce reflectivity function (MBRF) ƒ(x,y,γ). Specifically, the evaluation of ƒ(x,y,γ) in the γ=0 plane gives an approximately exact reconstruction of the true object scattering centers which is uncorrupted by multiple-bounce contributions to the phase history data G(ξ,θ). In addition, the non-zero dependence of ƒ(x,y,γ) upon the MB coordinate γ can be used to facilitate the identification of features-interest within the imaged region.
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Gregory Bernarr E.
King & Spalding LLP
Science Applications International Corporation
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