It introduces the positional measurement technique that uses the sound wave in this thesis. In the proposal technique, three dimension coordinates of the movement station are measured by repeatedly transmitting the signal of 0.2s from the movement station (Speaker), and receiving it in two or more Receiving station (Mic) simultaneously. This technique becomes a useful basic technology in the position tracking that uses a wireless communication. In this proposal, the sound wave is used to communicate between the movement station and Receiving station. The signal used to communicate uses the signal that the output of the correlation function of the transmission signal and the reception signal is near the wave pulse in Receiving station. The phase lag is detected from the correlation function output obtained by each receiver, and positional coordinates of a limited space are obtained. It was shown that this technique was useful by having obtained the accuracy of ten centimeters or less in a minimum error margin conducting the experiment by nearing to a reflected wave strong, actual system requirements in the measurement experiment.%本論文では音波を用いた位置測定手法を紹介する．提案手法では，移動局（スピーカ）から0．2sの信号を繰り返し送信し，複数の受信局（マイク）で同時受信することにより移動局の3次元座標を計測する．本手法は，無線通信を用いた位置検出において，有用な基礎技術となる．本提案では，移動局と受信局間の通信に音波を用いる．通信に用いる信号は，受信局において送信信号と受信信号の相関関数出力がパルス波に近い信号を用いる．各受信機で得られる相関関数出力から位相差を検出し，限定空間の位置座標を得る．測定実験では反射波の強い実際の使用環境に近い状態での実験を行い，最小誤差10センチメートル以下の精度を得たことにより，本手法が有用であることを示した．
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