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Real-Time Distance Measurement for Indoor Positioning System Using Spread Spectrum Ultrasonic Waves

Written By

Akimasa Suzuki, Taketoshi Iyota and Kazuhiro Watanabe

Submitted: 16 March 2011 Published: 07 March 2012

DOI: 10.5772/30215

From the Edited Volume

Ultrasonic Waves

Edited by Auteliano Antunes dos Santos Júnior

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Written By

Akimasa Suzuki, Taketoshi Iyota and Kazuhiro Watanabe

Submitted: 16 March 2011 Published: 07 March 2012