3-D sound for virtual reality and multimedia
3-D sound for virtual reality and multimedia
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
The anatomy of a context-aware application
Wireless Networks - Selected Papers from Mobicom'99
ACM SIGMOBILE Mobile Computing and Communications Review
A self-calibrating distributed acoustic sensing platform
Proceedings of the 4th international conference on Embedded networked sensor systems
BeepBeep: a high accuracy acoustic ranging system using COTS mobile devices
Proceedings of the 5th international conference on Embedded networked sensor systems
Location Systems: An Introduction to the Technology Behind Location (Synthesis Lectures on Mobile and Pervasive Computing)
A spatial feature extraction and regularization model for virtual auditory display
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: plenary, special, audio, underwater acoustics, VLSI, neural networks - Volume I
Audio location: accurate low-cost location sensing
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Using sound source localization in a home environment
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Demo: Sword fight with smartphones
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
SwordFight: enabling a new class of phone-to-phone action games on commodity phones
Proceedings of the 10th international conference on Mobile systems, applications, and services
Push the limit of WiFi based localization for smartphones
Proceedings of the 18th annual international conference on Mobile computing and networking
FLIGHT: clock calibration using fluorescent lighting
Proceedings of the 18th annual international conference on Mobile computing and networking
Sound-based proximity detection with mobile phones
Proceedings of the Third International Workshop on Sensing Applications on Mobile Phones
Social-Loc: improving indoor localization with social sensing
Proceedings of the 11th ACM Conference on Embedded Networked Sensor Systems
A wireless application overlay for ubiquitous mobile multimedia sensing and interaction
Proceedings of the 5th ACM Multimedia Systems Conference
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High-speed, locational, phone-to-phone (HLPP) games and apps constitute a provocative class of mobile apps that are currently unsupported on commodity mobile devices. This work looks at a key problem for enabling HLPP: a specific variant of the localization problem in which two phones estimate each other's relative positions in 3D space without infrastructure support. Moreover, position estimates should reflect changes due to the phones' possible mobility. We present a solution for achieving high speed 3D continuous localization for phone-to-phone scenarios. Our basic approach uses acoustic cues based on time-of-arrival and power level. It assumes at least two microphones and one speaker per phone, which is common on new smartphones. Accelerometers and digital compasses assist in resolving ambiguous acoustic-only localization. Continuous localization is achieved with the aid of a loose time synchronization protocol and an extended Kalman filter. Experimental results across a range of motion paths show localization resolution to within 13.9 centimeters for 90% of estimates, and to within 4.9 centimeters for 50% of estimates when the phones are several meters apart.