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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Title: Wavenumber Domain Methods for Three-Dimensional Radar Imaging
Committee:
Dr. Barnes, Advisor
Dr. Herrmann, Chair
Dr. Williams
Abstract: The objective of the proposed research is to investigate novel approaches to Radar Imaging and develop wavenumber-domain algorithms for three-dimensional imaging of static and moving objects. Existing methods in Radar Imaging using Synthetic Aperture Radars (SARs) are generally restricted to linear or circular sensing geometries, and typically involve tradeoffs between supported scene size and resolution. Current methods are primarily amenable to static object profiling. The proposed research builds on wavenumber-domain methods with a basis in seismic sensing, to design new algorithms that offer a unified framework for numerous 3D Radar imaging applications, such as non-linear sensing paths, multi-band imaging, volumetric imaging of highly maneuverable objects, and distributed sensing with sparse swarms, applications that are either currently impractical, or require separate algorithms. Results demonstrating angle isomorphism between spatial view-angles and corresponding wavenumber-domain sample locations of radar echoes will enable us to develop a common data manifold to allow fusion and subsequent image reconstruction of samples from diverse sensors with ease in wavenumber-space. Methods are also proposed that apply these principles to fully Digital Arrays, which will empower novel operational modes such as single-pulse Radar imaging, and a unified algorithm for both real- and synthetic-aperture imaging.
