Title page for ETD etd-050307-142829

Document Type	dissertation
Author Name	Holl, Jr., David J.
Email Address	david at ad5ey.net
URN	etd-050307-142829
Title	State-Space Approaches to Ultra-Wideband Doppler Processing
Degree	PhD
Department	Electrical & Computer Engineering
Advisors	David Cyganski, Advisor Homer Walker, Committee Member Kevin Clements, Committee Member
Keywords	state-space super resolution Doppler direction of arrival DoA singular value SVD DSS
Date of Presentation/Defense	2007-04-27
Availability	unrestricted
Abstract National security needs dictate the development of new radar systems capable of identifying and tracking exoatmospheric threats to aid our defense. These new radar systems feature reduced noise floors, electronic beam steering, and ultra-wide bandwidths, all of which facilitate threat discrimination. However, in order to identify missile attributes such as RF reflectivity, distance, and velocity, many existing processing algorithms rely upon narrow bandwidth assumptions that break down with increased signal bandwidth. We present a fresh investigation into these algorithms for removing bandwidth limitations and propose novel state-space and direct-data factoring formulations such as * the multidimensional extension to the Eigensystem Realization Algorithm, * employing state-space models in place of interpolation to obtain a form which admits a separation and isolation of solution components, * and side-stepping the joint diagonalization of state transition matrices, which commonly plagues methods like multidimensional ESPRIT. We then benchmark our approaches and relate the outcomes to the Cramer-Rao bound for the case of one and two adjacent reflectors to validate their conceptual design and identify those techniques that compare favorably to or improve upon existing practices.
Files	dholl_dissertation.pdf

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