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Home > Research > Publications & Outputs > A Novel Broadband Ultrasonic Location System
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A Novel Broadband Ultrasonic Location System

Research output: Contribution to conferenceConference paper

Published

Publication date2002
Number of pages17
Pages264-280
Original languageEnglish

Conference

ConferenceUbiComp '02: Proceedings of the 4th international conference on Ubiquitous Computing
CityGöteborg, Sweden
Period29/09/021/10/02

Abstract

Indoor ultrasonic location systems provide ne-grained position data to ubiquitous computing applications. However, the ultrasonic location systems previously developed utilize narrowband transducers, and thus perform poorly in the presence of noise and are constrained by the fact that signal collisions must be avoided. In this paper, we present a novel ultrasonic location system which utilizes broadband transducers. We describe the transmitter and receiver hardware, and characterize the ultrasonic channel bandwidth. The system has been deployed as a polled, centralized location system in an of ce. Test results demonstrate that the system can function in high levels of environmental noise, and that it has the capability for higher update rates than previous ultrasonic location systems.