The acoustic distance measurement(ADM) method based on phase interference has been proposed. However, it becomes difficult for ADM to measure the distance to target shorter than distance resolution. Though the principled method for close range has...
In a number of engineering fields, information on the distance to the target is very important. We previously proposed an acoustic distance measurement method based on interference between the transmitted and reflected waves, which can be used for...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society 132(11) 1774-1775 2012年11月 [査読有り]
In robot sensors and security systems, both range and velocity to a moving target are very important. In this paper, we propose a method to estimate both range and velocity based on the phase interference of subband-divided and time-delayed impuls...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society 132(11) 1749-1755 2012年11月 [査読有り]
In many engineering fields, distance to target is very important information. Typical distance measurement methods use time delay between transmitted and reflected waves, but it is difficult to estimate short distance. On the other hand, a method ...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society 131(11) 1864-1870 2011年11月 [査読有り]
In many engineering fields, distance to targets is very important. General distance measurement method uses a time delay between transmitted and reflected waves, but it is difficult to estimate the short distance. On the other hand, the method usi...
IEICE Trans Fundam Electron Commun Comput Sci (Inst Electron Inf Commun Eng) E94-A(8) 1638-1646 (J-STAGE)-1646 2011年8月 [査読有り]
Distance to target is fundamental and very important information in numerous engineering fields. Many distance measurement methods using sound use the time delay of a reflected wave, which is measured in reference to the transmitted wave. This met...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 130(11) 1994-2000 2010年11月 [査読有り]
In many engineering fields, distance to targets is very important. General distance measurement method uses a time delay between transmitted and reflected waves, but it is difficult to estimate the short distance. On the other hand, the method usi...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 129(11) 2027-2033 2009年11月 [査読有り]
In many engineering fields, distance to target is very important and fundamental information. Acoustical signal often plays an essential role in measurement of distance. Though there are distance measurement methods using a time delay between tran...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 129(2) 314-319 2009年2月 [査読有り]
In many engineering fields, distance to target is very important information. As a typical method, distance is estimated by measuring time delay between transmitted and reflected waves. However, it is difficult to estimate short distance by a meth...
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 128(7) 1117-1122 2008年7月 [査読有り]
In many engineering fields, distance to target is fundamental and very important information. Acoustical signal, such as audible sound or ultrasonic, often plays an essential role in measurement of distance. To measure distance, the time delay of ...
NAKASAKO Noboru, UEBO Tetsuji, MORI Atsushi, OHMATA Norimitsu
IEICE Trans Fundam Electron Commun Comput Sci (Inst Electron Inf Commun Eng) E91-A(4) 1218-1221 2008年4月 [査読有り]
In the research field of microwave radar, a range finding method based on standing wave is known to be effective for measuring short distances. In this paper, we focus our attention on audible sound and fundamentally examine the distance estimatio...
In this paper, we propose a noncontact and absolute type displacement sensor detecting multiple targets using standing wave on a transmission line. The standing wave is generated, when driving the transmission line by a high-frequency signal towar...
In this paper, we describe how to improve the resolution of an absolute type displacement sensor utilizing standing wave on a transmission line. This sensor is based on the phenomenon that the node of standing wave is produced every half-wavelengt...
24th International Congress on Sound and Vibration, ICSV 2017 2017年1月
The distance to a target is fundamental and very important information in many engineering applications. Kinect is known to have many sensors (e.g., depth sensor, RGB camera, color camera sensor, four-elements microphone array and so on). A depth ...
24th International Congress on Sound and Vibration, ICSV 2017 2017年1月
Basically, it is important to know the distance and position to the elderly and the patient in order to realize improvement of home health care. The authors have already proposed a method to estimate the distance between a microphone and a target ...
Song Changryung, Toshihiro Shinohara, Tetsuji Uebo, Noboru Nakasako
24th International Congress on Sound and Vibration, ICSV 2017 2017年1月
The distance to a target is basic information in many engineering fields. Recently, the acoustic distance measurement (ADM) method based on the phase interference between transmitted and reflected waves has been proposed. The power spectrum of an ...
24th International Congress on Sound and Vibration, ICSV 2017 2017年1月
The distance to a target is fundamental information in many engineering applications. Recently, an acoustic distance measurement (ADM) method has been proposed based on the interference between transmitted and reflected waves, but it requires appl...
Noboru Nakasako, Yuta Tsuchida, Toshihiro Shinohara, Tetsuji Uebo
ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics 2016年1月
The distance to a target is fundamental information in many engineering applications, and an acoustical signal, especially an ultrasonic sound, often plays an essential role in measuring such a distance. Many proposed methods for measuring distanc...
ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics 2016年1月
In acoustic applications, it is often important to estimate the distance to the sound source. The conventional way to estimate the distance to the target is based on the time delay between the transmitted and reflected waves, but this method canno...
ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics 2016年1月
In order to achieve the realistic sensation of sound, sound field reproduction technique plays a very important role. The sound field reproduction technology is roughly classified into binaural and transaural reproduction systems. The former has a...
22nd International Congress on Sound and Vibration, ICSV 2015 2015年1月
In many engineering fields, it is very important to measure the distance of an object which is called a target in this paper. In order to measure the distance to a stationary target, we previously proposed an acoustic distance measurement (ADM) me...
Electronics and Communications in Japan 97 24-31 2014年1月
In many engineering fields, distance to target is very important information. Typical distance measurement methods use the time delay between transmitted and reflected waves, but it is difficult to estimate short distances. A method for measuring ...
Noboru Nakasako, Yuma Neki, Masato Nakayama, Toshihiro Shinohara, Tetsuji Uebo
INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control 2014年1月
Since the distance to target is very important information, we have proposed an acoustic distance measurement (ADM) method using a standing wave, which is generated by interference between transmitted and reflected waves. The proposed method is ve...
2013 IEEE 2nd Global Conference on Consumer Electronics, GCCE 2013 112-115 2013年12月
Since the distance to target is very important information, we have proposed an acoustic distance measurement (ADM) method using a standing wave, which is generated by interference between transmitted and reflected waves. This method is very simpl...
2013 International Symposium on Electromagnetic Theory, EMTS 2013 - Proceedings 489-492 2013年9月
We have put a lot of effort into development of a 79 GHz band range finder and have seen that a coaxial waveguide transition using a finline built on a high-permittivity substrate is required. Then, we attempted to design a 79 GHz band coaxial wav...
42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life 5 3789-3798 2013年1月
Since the distance to target is very important information, we have proposed an acoustic distance measurement using a standing wave, which is generated by interference between transmitted and reflected waves. This method is very simple in that the...
International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2013, Naha-shi, Japan, November 12-15, 2013 332-335 2013年 [査読有り]
2012 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2012 674-679 2012年11月
The distance to talkers is very important information for both hands-free speech interfaces and nursing-care robots. We have proposed an acoustic distance measurement method based on interference between the transmitted and reflected waves, which ...
40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 2 1512-1517 2011年12月
Distance or direction from sound source is fundamental and very important information in many engineering fields. In some applications, microphone array with multiple microphone elements is often used to obtain such information. Meanwhile, since d...
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 177 41-48 2011年11月
In many engineering fields, the distance to target is very important information. In a typical method, the distance is estimated by measuring the time delay between transmitted and reflected waves. However, it is difficult to estimate short distan...
ISCIT 2010 - 2010 10th International Symposium on Communications and Information Technologies 164-169 2010年12月
In many engineering fields, distance to target is very important information. Typical distance measurement methods use time delay between transmitted and reflected waves, but it is difficult to estimate short distance. On the other hand, a method ...
ISCIT 2010 - 2010 10th International Symposium on Communications and Information Technologies 176-181 2010年12月
Distance to target is fundamental and very important information in many engineering fields. Many distance measurement methods with sound utilize the time delay of reflected wave which is measured with reference to transmitted one. This method, ho...
Electronics and Communications in Japan 93 53-60 2010年7月
In many engineering fields, the distance to target is fundamental and very important information. Acoustical signals, such as audible sound or ultrasound, often play an essential role in measurement of distance. To measure distance, the time delay...
Naruto Yonemoto, Akiko Kohmura, Shunichi Futatsumori, Alexandre Saillard, Tetsuji Uebo
2009 International Radar Conference "Surveillance for a Safer World", RADAR 2009 2009年12月
Foreign Objects and Debris (FODs) must be removed from runways. With the necessity of automatic continuous survey, we are investigating a new FOD detection system based on a millimeter wave radar network. This paper describes the concept of this F...
APSIPA ASC 2009 - Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference 234-237 2009年12月
In many engineering fields, distance to target is very important and fundamental information. Acoustical signaloften plays an essential role in measurement of distance. Though there are distance measurement methods using a time delay between trans...
IEEJ Transactions on Electronics, Information and Systems 129 2009年12月
In many engineering fields, distance to target is very important and fundamental information. Acoustical signal often plays an essential role in measurement of distance. Though there are distance measurement methods using a time delay between tran...
IEEJ Transactions on Electronics, Information and Systems 128 2008年12月
In many engineering fields, distance to target is fundamental and very important information. Acoustical signal, such as audible sound or ultrasonic, often plays an essential role in measurement of distance. To measure distance, the time delay of ...
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E91-A 1218-1221 2008年12月
In the research field of microwave radar, a range finding method based on standing wave is known to be effective for measuring short distances. In this paper, we focus our attention on audible sound and fundamentally examine the distance estimatio...
Noboru Nakasako, Tetsuji Uebo, Tetsuji Uebo, Norimitsu Ohmata, Atsushi Mori
Proceedings of the SICE Annual Conference 151-156 2007年12月
In many engineering fields, distance to target is fundamental and very important information, and often estimated or measured by using sound. To measure the distance to the target, time delay between reflected wave from transmitted wave is often u...
Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi) 90 25-34 2007年9月
In general, it is difficult to measure short distances by radar, which has a minimum detection distance of several meters. The standing wave radar proposed by the present authors has a minimum detection distance of about 2 m when the frequency ban...
Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi) 89 52-60 2006年5月
For automobile safety, supplemental equipment such as seat belts and air bags is used. These devices are activated after an accident. In contrast, from the point of view of accident prevention, automotive radar has been developed for collision avo...
Midwest Symposium on Circuits and Systems 1 2004年12月
In this paper, we propose a radar using standing wave, and describe the measurement principle and experiment results. This radar does not use a time delay like usual radars but uses the amplitude of the standing wave. As a result of experiments, t...
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