Jason Goldberg

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The problem of robust beamformer design in the presence of moving sources is considered. A new technique based on a generalization of the constrained minimum variance beamformer is proposed. The method explicitly takes into account changes in the scenario due to the movement of the desired and interfering sources, requiring only estimation of the desired(More)
An algorithm for the joint tracking of source DOA's and sensor positions is presented to address the problem of DOA tracking in the presence sensor motion. Initial maximum likelihood estimates of source DOA's and sensor positions are re ned by Kalman ltering. Spatio-temporally correlated array movement is considered. Source angle dynamics are used to(More)
Signal-to-noise ratio (SNR) estimation is considered for phase-shift keying communication systems in time-varying fading channels. Both data-aided (DA) estimation and nondata-aided (NDA) estimation are addressed. The time-varying fading channel is modeled as a polynomial-in-time. Inherent estimation accuracy limitations are examined via the Cramer–Rao lower(More)
This paper describes our experiences in developing a simulation model for evaluating a set of emergency response vehicle base locations. The project was undertaken jointly by the University of Arizona and the Tucson Fire Department. The issues of model development, data collection, model validation, and experimentation are discussed. The critical nature of(More)
Data-Aided Signal-to-Noise-Ratio (SNR) estimation is considered for time selective fading channels whose time variation is described by a polynomial time model. The inherent estimation accuracy limitations associated with the problem are quantified via a Cramer-Rao Bound analysis. A maximum likelihood type class of estimators is proposed and its exact,(More)
This paper studies passive source localization performance in shallow water using a vertical array whose sensor depths are unknown. The performance degradation with respect to the case of known sensor depths is studied via the Cramer-Rao Bound for a single far field narrow band source. Examination of the bound indicates that there is no inherent singularity(More)