Paper Info
Title
Rebooting Ultrasonic Positioning Systems for Ultrasound-incapable Smart Devices.
Abstract
An ultrasonic Positioning System (UPS) has outperformed RF-based systems in terms of its accuracy for years. However, few of the developed solutions have been deployed in practice to satisfy the localization demand of todayu0027s smart devices, which lack ultrasonic sensors and were considered as being `deafu0027 to ultrasound. A recent finding demonstrates that ultrasound may be audible to the smart devices under certain conditions due to their microphoneu0027s nonlinearity. Inspired by this insight, this work revisits the ultrasonic positioning technique and builds a practical UPS, called UPS+ for ultrasound-incapable smart devices. The core concept is to deploy two types of indoor beacon devices, which will advertise ultrasonic beacons at two different ultrasonic frequencies respectively. Their superimposed beacons are shifted to a low-frequency by virtue of the nonlinearity effect at the receiveru0027s microphone. This underlying property functions as an implicit ultrasonic downconverter without throwing harm to the hearing system of humans. We demonstrate UPS+, a fully functional UPS prototype, with centimeter-level localization accuracy using custom-made beacon hardware and well-designed algorithms.
Year
DOI
Venue
2018
10.1145/3300061.3300139
The 25th Annual International Conference on Mobile Computing and Networking
Keywords
Field
DocType
nonlinearity effect, ultrasonic positioning system, ups+
Beacon,Ultrasonic sensor,Reboot,Computer science,Heterodyne,Electrical engineering,Microphone,Positioning system,Distributed computing,Ultrasound
Journal
Volume
Citations 
PageRank 
abs/1812.02349
7
0.48
References 
Authors
0
3
Name
Order
Citations
PageRank
Qiongzheng Lin115511.93
Zhenlin An2287.60
Lei Yang377848.19