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Multi-lateration for multiplexed ultrasonic sensors

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4 Author(s)
Hori, T. ; Digital Human Res. Center, AIST, Tokyo, Japan ; Nishida, Y. ; Kanade, T. ; Akiyama, K.

This paper presents a new multi-lateration algorithm developed by the authors for multiplexed ultrasonic emitters. Our ultrasonic sensor system had a problem that a sampling rate for each emitter had to be decreased to avoid crosstalk as the number of emitter increased. We analyzed the phenomena geometrically and mathematically, and developed a new multi-lateration algorithm that enables our ultrasonic sensor system locate multiple emitters at a time by activating them simultaneously. Simulation results supported the effectiveness of our proposed algorithm and the algorithm implemented in our test system worked perfectly for the experiments conducted in a real environment.

Published in:

Sensors, 2003. Proceedings of IEEE  (Volume:2 )

Date of Conference:

22-24 Oct. 2003