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An imaging technique using confocal circular synthetic aperture radar

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3 Author(s)
Ishimaru, A. ; Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA ; Tsz-King Chan ; Kuga, Y.

This paper presents a theory and its experimental demonstration of an imaging technique based on three-dimensional (3D) space-time confocal imaging and circular synthetic aperture radar (SAR). The theory is an extension of the conventional straight-path SAR-to-SAR on an arbitrary curved path. Next, a general formulation for the curved SAR is applied to circular SAR geometry, which has two important features. First, it allows the maximum attainable resolution to be an the order of a wavelength. Second, it makes 3D confocal imaging possible, X-band (7-13 GHz) imaging experiments are conducted to demonstrate this technique

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:36 ,  Issue: 5 )