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Summary: IEEE TRANSACTIONS ON SIGNAL PROCESSING 1
Theory and Design of Multirate Sensor Arrays
Omid S. Jahromi, Member, IEEE, and Parham Aarabi, Member, IEEE
Artificial Perception Laboratory
Edward S. Rogers Sr. Department of Electrical and Computer Engineering
University of Toronto
Toronto, Ontario, Canada M5S 3G4
Phone: (416) 946-7893 Fax: (416) 978-4425
Email: omidj@control.toronto.edu, parham@ecf.toronto.edu
EDICS: 2-FILB , 2-MWAV,
Corresponding author: Omid Jahromi
April 28, 2004 DRAFT
Abstract
This paper studies the basic design challenges associated with multirate sensor arrays. A multirate
sensor array is a sensor array in which each sensor node communicates a low-resolution measurement to a
central processing unit. The objective is to design the individual sensor nodes and the central processing
unit such that, at the end, a unified high-resolution measurement is reconstructed
A multirate sensor array can be modelled as an analysis filter bank in discrete-time. Using this model,
the design problem is reduced to solving the following two problem: (a) How to design the sensor nodes
such that the time-delay of arrival (TDOA) between the sensors can be estimated using the low-rate data
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