D
Dennis C. Ghiglia
Researcher at Sandia National Laboratories
Publications - 38
Citations - 5161
Dennis C. Ghiglia is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Synthetic aperture radar & Autofocus. The author has an hindex of 19, co-authored 38 publications receiving 4736 citations.
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Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach
TL;DR: In this article, the authors developed a rigorous theoretical framework for spotlight-mode SAR imaging, using a paradigm based on three-dimensional tomographic concepts, and used the polar-reformatting algorithm for robust image formation.
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Robust two-dimensional weighted and unweighted phase unwrapping that uses fast transforms and iterative methods
TL;DR: In this article, a robust method for 2D phase principal values (in a least-squares sense) by using fast cosine transforms was developed, which can be used to isolate inconsistent regions (i.e., phase shear).
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Phase gradient autofocus-a robust tool for high resolution SAR phase correction
TL;DR: The phase gradient autofocus technique for phase error correction of spotlight mode synthetic aperture radar (SAR) imagery is examined carefully in the context of four fundamental signal processing steps that constitute the algorithm.
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Minimum Lp-norm two-dimensional phase unwrapping
TL;DR: In this paper, the minimum Lp-norm solution is obtained by embedding the transform-based methods for unweighted and weighted least squares within a simple iterative structure, and the data-dependent weights are generated within the algorithm and need not be supplied explicitly by the user.
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Phase encoding of shot records in prestack migration
TL;DR: This work investigates the simultaneous migration of shot records using frequency‐domain shot‐record migration algorithms, and introduces a process called phase encoding, which shifts or disperses crossterms between unrelated shot and receiver wavefields.