IEEE Gainesville Section and Department of Electrical and Computer Engineering presents 


Robust Approaches to Distributed Source Localization 
in Wireless Sensor Networks


Zhi DING
IEEE Fellow
Child Family Endowed Professor of Engineering and Entrepreneurship
Department of Electrical and Computer Engineering
University of California, Davis 

DAY/DATE: Thursday, October 15, 2009
TIME: 3:00-4:00pm
LOCATION: LAR 234 

ABSTRACT
In recent years, the problem of source and sensor localization has
been gaining increasing prominence in wireless systems including
navigation.  The measurement information can be distance, bearing,
power level, and time of arrival (TOA).  In this talk,
we address multiple fundamental issues in distributed wireless
source and sensor localization.  To support the full scope of
localization based applications, we must ensure that localization
occurs accurately and in a cost-efficient and timely manner. To this
end we describe three important aspects of our recent works.
In particular, we analyze the optimality of various estimates.
including maximum likelihood and minimum variance estimates.
We develop and generalize efficient estimates with low complexity
based on relaxed reformulation of convex optimization.  We also
discuss the proper placement of sensors/anchors for better estimation
accuracy and robustness. Our focus will be both fundamental and practical.

ABOUT THE SPEAKER
Zhi Ding is the Child Family Endowed Professor of Engineering and
Entrepreneurship at the University of California, Davis.  He received
his Ph.D. degree in Electrical Engineering from Cornell University in
1990.  From 1990 to 1998, he was a faculty member of Auburn
University. From 1998-2000, he was a faculty member of Electrical and
Computer Engineering at the University of Iowa.  He joined the
University of California, Davis in 2000 as a professor of Electrical
and Computer Engineering. Currently, he is also a guest Changjiang
Chair Professor of the Southeast University in Nanjing, China.

Prof. Ding is a Fellow of the IEEE. Professor Ding served as associate
editor for IEEE Transactions on Signal Processing from 1994-1997 and
2001-2004.  He served as associate editor for IEEE Signal Processing
Letters from 2002-2005.  He was a member of the Editorial Board of the
IEEE Signal Processing Magazine. He served as the Technical Program
Chair for COMSOC¡¯s Globecom-2006.  Prof. Ding was a member of IEEE
Signal Processing Society¡¯s Technical Committee on Statistical Signal
and Array Processing (1994-1998) and a member of Technical Committee
on Signal Processing for Communications (1998-2003). He also served on
the IEEE Signal Processing Society Technical Committee on Multi-Media
Signal Processing (2002-2005). Prof. Ding was named as 2004-6
Distinguished Lecturer by the Circuits and Systems Society and is a
Distinguished Lecturer of the IEEE Communications Society for the term
2008-09.