High resolution synthetic aperture radar using a multiple sub-band technique

Cooper, P. S.; Wons, A.F.; Gaskell, A.P.

doi:10.1049/cp:19971675

Cited by 8 publications

(2 citation statements)

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“…For example, the modeling of physical parameters has led to enhanced modes of strip-map and spotlight SAR imaging. 1,2 OCT is a high-resolution noncontact optical imaging modality that can image highly scattering tissues at depths of up to 3 mm, depending on the tissue type. It is a range-finding technique that relies on optical scattering in biological specimens to form micrometer-scale crosssectional images.…”

Section: Background and Introductionmentioning

confidence: 99%

Inverse Scattering for Optical Coherence Tomography

Ralston

Marks

Carney

et al. 2005

Frontiers in Optics

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Inverse scattering theory for optical coherence tomography (OCT) is developed. The results are used to produce algorithms to resolve three-dimensional object structure, taking into account the finite beam width, diffraction, and defocusing effects. The resolution normally achieved only in the focal plane of the OCT system is shown to be available for all illuminated depths in the object without moving the focal plane. Spatially invariant resolution is verified with numerical simulations and indicates an improvement of the high-resolution crosssectional imaging capabilities of OCT.

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Section: Background and Introductionmentioning

confidence: 99%

Inverse Scattering for Optical Coherence Tomography

Ralston

Marks

Carney

et al. 2005

Frontiers in Optics

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“…Data synthesis and image formation algorithms have been crucial in other non-optical imaging modalities such as synthetic aperture radar (SAR) where improved algorithms have dramatically increased the performance of such systems. For example, the modeling of physical parameters has lead to enhanced modes of strip-map and spotlight SAR imaging [1].…”

Section: Introductionmentioning

confidence: 99%

Phase Stability Technique for Inverse Scattering in Optical Coherence Tomography

Ralston

Marks

Carney

et al.

3rd IEEE International Symposium on Biomedical Imaging: Macro to Nano, 2006.

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We present a technique for maintaining phase stability in a three-dimensional optical coherence tomography system. When determining the inverse scattering solution, phase stable measurements are required to ensure proper object reconstruction. The proposed method uses a reference object placed above the specimen to facilitate the retrieval of accurate constant phase surfaces throughout the specimen. Our algorithm locates the reference object, determines the phase and group delay, and corrects the phase disturbance accordingly.

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