ISSNIP

Event Name Siminar on: Shopping Cart Tracking in Retail Stores. By: Dr. Wolfgang Schott, IBM Zurich Research Laboratory, Zurich, Switzerland.
Start Date 8th Oct 2008 4:15pm
End Date 8th Oct 2008 5:15pm
Duration 1 hour
Description

Speaker: Wolfgang Schott

Location: Brown Theatre, EEE Building 193, The University of Melbourne 

Abstract: We consider the problem of real-time sensing and tracking the location of a moving cart in an indoor environment. To this end, we propose to combine position information obtained from an inertial navigation system (INS) and a short-range wireless reference system that can be embedded into a future "network of things". The data produced by the INS lead to accurate short-term position estimates, but due to the drifts inherent to the system, these estimates perform loosely after some time. To solve this problem, we also generate estimates with a wireless reference system. These radio-based estimates can be used as accurate long-term position estimates because their accuracy improves over time as the channel fading can be averaged out. We use a data fusion algorithm based on Kalman filtering with forward/backward smoothing to optimally combine the short- and long-term position estimates. We have implemented this localization system in a real-time testbed. The measurement results, which we obtained, using the proposed method, show considerable improvements in accuracy of the location estimates.


Biography : Wolfgang Schott was born in Birkenau, Germany, in 1951. He received the Dipl.-Ing. and Dr.-Ing. degrees in Electrical Engineering from the Technical University of Darmstadt, Germany, in 1977 and 1982, respectively. In 1982, he joined the Communication Systems Department at the IBM Research Laboratory, Z┬┐rich, Switzerland, where he initially developed signal processing concepts for digital storage devices. From 1989 to 1990, he was assigned to the IBM System Storage Products Division, San Jose, CA, contributing to a VLSI implementation of the PRML magnetic-recording channel. Since 1992, he has pursued research on wireless mobile communication. His work concentrated on the design of transceiver algorithms and protocols for cellular wide-area and short-range communication systems. Currently, his main scientific interest focuses on wireless sensor networks.

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