Dr. Domingo A. Rodriguez Profile

Dr. Domingo A. Rodriguez

Professor at Univ of Puerto Rico

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Publications (6)

Proceedings Article | 17 May 2006 Paper

Performance measures for parameter extraction of sensor array point targets using the discrete chirp Fourier transform

Nayda Santiago, Cesar Aceros Moreno, Domingo Rodriguez

Proceedings Volume 6235, 62351L (2006) https://doi.org/10.1117/12.666465

KEYWORDS: Fourier transforms, Detection and tracking algorithms, Algorithm development, Signal processing, Matrices, Time-frequency analysis, Synthetic aperture radar, Modulation, Sensors, Information fusion

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This work presents a new methodology for the formulation of discrete chirp Fourier transform (DCFT) algorithms and it discusses performance measures pertaining to the mapping of these algorithms to hardware computational structures (HCS) as well as the extraction of chirp rate estimation parameters of multicomponent nonstationary signals arriving from point targets. The methodology centers on the use of Kronecker products algebra, a branch of finite dimensional multilinear algebra, as a language to present a canonical formulation of the DCFT algorithm and its associated properties. The methodology also explains how to search for variants of this canonical formulation that contribute to enhance the mapping process to a target HCS. The parameter extraction technique uses time-frequency properties of the DCFT in a modeled delay-Doppler synthetic aperture radar (SAR) remote sensing and surveillance environment to treat multicomponent return signals of prime length, with additive Gaussian noise as background clutter, and extract associated chirp rate parameters. The fusion of time-frequency information, acquired from transformed chirp or linear frequency modulated (FM) signals using the DCFT, with information obtained when the signals are treated using the discrete ambiguity function acting as point target response, point spread function, or impulse response, is used to further enhance the estimation process. For the case of very long signals, parallel algorithm implementations have been obtained on cluster computers. A theoretical computer performance analysis was conducted on the cluster implementation based on a methodology that applies well-defined design of experiments methods to the identification of relations among different levels in the process of mapping computational operations to high-performance computing systems. The use of statistics for identification of relationships among factors has formalized the search for solutions to the mapping problem and this approach allows unbiased conclusions about results.

Proceedings Article | 24 August 2000 Paper

Kronecker-based algorithms for SAR imaging kernel formation

Domingo Rodriguez, Dilia Rueda Serrano

Proceedings Volume 4053, (2000) https://doi.org/10.1117/12.396325

KEYWORDS: Synthetic aperture radar, Algorithm development, Image acquisition, Fourier transforms, Signal processing, Image processing, Detection and tracking algorithms, Sensors, Algorithms, Matrices

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Proceedings Article | 26 July 2000 Paper

DFT beamforming algorithms for space-time-frequency applications

Domingo Rodriguez, Marlene Vargas Solleiro, Yvonne Aviles

Proceedings Volume 4045, (2000) https://doi.org/10.1117/12.394082

KEYWORDS: Detection and tracking algorithms, Field programmable gate arrays, Fourier transforms, Francium, Signal processing, Computer engineering, Data communications, Wireless communications, Matrices

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Proceedings Article | 6 July 2000 Paper

Characterizing point spread signals for subsurface synthetic imaging

Domingo Rodriguez

Proceedings Volume 4129, (2000) https://doi.org/10.1117/12.390642

KEYWORDS: Image acquisition, Synthetic aperture radar, Point spread functions, Algorithm development, Image processing, Fourier transforms, Signal processing, Data modeling, Radar, Image resolution

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Proceedings Article | 15 October 1999 Paper

SAR point spread signals and Earth surface property characteristics

Domingo Rodriguez

Proceedings Volume 3752, (1999) https://doi.org/10.1117/12.365710

KEYWORDS: Synthetic aperture radar, Algorithm development, Signal processing, Point spread functions, Surface properties, Data processing, Remote sensing, Fourier transforms, Data modeling, Convolution

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Proceedings Article | 1 December 1991 Paper

Artificial neural networks and Abelian harmonic analysis

Domingo Rodriguez, Jairo Pertuz-Campo

Proceedings Volume 1565, (1991) https://doi.org/10.1117/12.49801

KEYWORDS: Signal processing, Fourier transforms, Convolution, Filtering (signal processing), Digital signal processing, Artificial neural networks, Space operations, Electronic filtering, Vector spaces, Neural networks

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Showing 5 of 6 publications

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