トウ　リヨウ   Ryo TOH   陶　良    所属   千葉工業大学  工学部 電気電子工学科    千葉工業大学  工学研究科 工学専攻    千葉工業大学  工学研究科 電気電子工学専攻    職種   教授
言語種別	英語
発行・発表の年月	2015/08
形態種別	学術雑誌
査読	査読あり
標題	Ultrasonic Direction Measurement Method Using Sensitivity Compensated Transmitting Signal and Pulse Compression
執筆形態	共著
掲載誌名	Physics Procedia
出版社・発行元	ELSEVIER
巻・号・頁	70,pp.476-479
著者・共著者	Dai Chimura, Ryo Toh, Seiichi Motooka
概要	High resolution pulse compression technique for ultrasonic pulse-echo measurement has been studied. To acquire broader and flatter spectrum, a Sensitivity Compensate Transmitting (SCT) signal, calculated from inversed filtering of received signal, was proposed. Up to now, two types SCT signal, the Sensitivity Compensated AM (SCAM) signal which is an amplitude modulated chirp wave, and the Sensitivity Compensate FM (SCFM) signal which is a non-linear FM signal were proposed. In this paper, effectiveness of the SCT signal on 2-D direction measurement is discussed experimentally. The results show that accuracies of direction measurement using the SCT signals are improved than that of using the chirp wave. Furthermore, by using the SCFM signal, accuracy of direction measurement is improved than that of using the SCAM signal when the target is located at the position where the signal to noise ratio of received signal is lower.
DOI	10.1016/j.phpro.2015.08.289