Estimation of 3D device position by analyzing ultrasonic reflection signals

Conferentiebijdrage

Dijk, E.O., Berkel, van, C.H., Aarts, R.M. & Loenen, van, E.J. (2003). Estimation of 3D device position by analyzing ultrasonic reflection signals. Proceedings of the 14th ProRISC, Annual Workshop on Circuits, Systems and Signal Processing (ProRISC 2003) 26 - 27 November 2003, Veldhoven, the Netherlands (pp. 88). Utrecht, the Netherlands: STW Technology Foundation.

Abstract

 

In future domestic context aware applications the location of mobile devices is often required. Ultrasound technology enables high resolution indoor position measurements.

A disadvantage of state-of-the-art ultrasonic systems is that several base stations are required to estimate 3D position. Since fewer base stations would lead to lower cost and

easier setup, a novel method is presented that requires just one base station. The method uses information from acoustic reflections in a room, and estimates 3D positions using an

acoustic room-model. The method has been implemented, and verified within an empty room. It can be concluded that ultrasonic reflection data provides useful clues about the 3D

position of a device.