Takuya Sakamoto

Takuya Sakamoto

Professor, Kyoto University, Japan

Department of Electrical Engineering

Graduate School of Engineering

Kyoto University

Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto 615-8510, Japan

orcid.org/0000-0003-0177-879X
Kyoto Univ. Database
researchmap
Google Scholar
ResearchGate

Published Papers

Research topics

Noncontact sensing of human bodies
Radar imaging and signal processing
Wireless sensing of vital signs
Biomedical engineering
Medical ultrasound sensing and imaging

Academic background

April 2002 - January 2005	Ph.D. in Informatics (Kyoto University)	Deapartment of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University	Kyoto, Japan
April 2000 - March 2002	Master of Informatics in Communications and Computer Engineering (Kyoto University)	Deapartment of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University	Kyoto, Japan
April 1996 - March 2000	Bachelor of Engineering in Electrical and Electronic Engineering (Kyoto University)	Undergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto University	Kyoto, Japan

Academic degree

January 24, 2005

Doctoral degree in Informatics (Kyoto University) (no. 136)
"Nonparametric imaging algorithms for UWB pulse radars"

Work experience

April 2022 - Present	Professor	Graduate School of Engineering, Kyoto University	Kyoto, Japan
April 2019 - March 2022	Associate Professor	Graduate School of Engineering, Kyoto University	Kyoto, Japan
Oct. 2018 - March 2022	PRESTO Researcher	Japan Science and Technology Agency	Kawaguchi, Japan
January 2018 - March 2019	Technology Development Advisor	Hyogo Prefectural Institute of Technology	Kobe, Japan
April 2017 - September 2017	Visiting Scholar	University of Hawaii at Manoa	Honolulu, HI, USA
August 2016 - September 2016	Guest Researcher	Delft University of Technology	Delft, The Netherlands
March 2016	Guest Researcher	Delft University of Technology	Delft, The Netherlands
September 2015	Guest Researcher	Delft University of Technology	Delft, The Netherlands
April 2015 - March 2019	Part-Time Researcher	Graduate School of Informatics, Kyoto University	Kyoto, Japan
April 2015 - March 2019	Associate Professor	Graduate School of Engineering, University of Hyogo	Himeji, Japan
September 2011 - November 2013	Visiting Researcher JSPS Postdoctoral Fellow for Research Abroad	Delft University of Technology	Delft, The Netherlands
September 2009	Visiting Researcher	University of Nice Sophia-Antipolis	Nice, France
April 2007 - March 2015	Assistant Professor	Graduate School of Informatics, Kyoto University	Kyoto, Japan
April 2006 - March 2007	Research Associate	Graduate School of Informatics, Kyoto University	Kyoto, Japan
April 2005 - March 2006	JSPS Post-doctoral Fellow	Graduate School of Informatics, Kyoto University	Kyoto, Japan
Feb. 1, 2005 - Mar. 31, 2005	Lecturer (Post-doctoral Fellow)	Graduate School of Engineering, Kyoto University	Kyoto, Japan
Apr. 1, 2004 - Mar. 31, 2005	Research Assistant	Graduate School of Engineering, Kyoto University	Kyoto, Japan
Apr. 1, 2004 - July 31, 2004	Teaching Assistant	Graduate School of Informatics, Kyoto University	Kyoto, Japan

Social activities

Date	Committee	Position
Nov. 2006 - Mar. 2008	IEEJ Technical Committee on Electromagnetic Theory	Assistant Secretary
Oct. 2007 - Present	IEICE Transactions on Communications	Review Committee Member
July 2008	Session IF516 "Inverse Scattering and Imaging I," IEEE AP-S International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, San Diego, CA, USA	Session Chair
Aug. 2009	Session 2P1 "Remote Sensing, RADAR Imaging and Detection" Progress in Electromagnetics Research Symposium 2009, Moscow, Russia	Session Chair
Apr. 2010	Session M04 "Measurement Imaging, Algorithms and Processing" with G. Roqueta at 4th European Conference on Antennas and Propagation 2010, Barcelona, Spain	Session Chair
Nov. 2010 - Dec. 2013	URSI Commission B "Fields and Waves" 2013 International Symposium on Electromagnetic Theory	Local Paper Committee Member
Dec. 2010	Asia-Pacific Microwave Conference 2010, Yokohama, Japan	Review Committee
Nov. 2010	Session "Antenna Array," International Symposium on Antennas and Propagation 2010, Macao, China	Session Chair
Dec. 2010	Session "Sensing and Measurements," Asia-Pacific Microwave Conference 2010, Yokohama, Japan	Session Chair
Apr. 2013	Measurement Imaging, Algorithms and Processing Techniques, EuCAP 2013, Gothenburg, Sweden	Session Chair
Feb. 2014	Department of Communications and Computer Engineering, The University of Twente Joint Research Meeting, Kyoto, Japan	Organizer and Chair
Jan. 2015 - Dec. 2016	IEEE Antennas and Propagation Society Kansai Joint Chapter	Treasurer
Apr. 2015 - July 2016	IEICE Trans. Electronics Special Issue "Special Section on Recent Advances in Simulation Techniques and Their Applications for Electronics"	Guest Associate Editor
2016	Session "Sparse arrays for short-range imaging," 2016 European Conference on Antennas and Propagation, Davos, Switzerland	Session Convener
2016	2016 European Conference on Antennas and Propagation, Davos, Switzerland	Reviewer
June 2016 - May 2018	IEICE Kansai Section	Committee Member
July-Aug. 2016	World Automation Congress 2016, Puerto Rico	Technical Program Committee Member
June 2016 - Present	IEICE Electronics Express	Associate Editor
June 2016 - May 2018	IEICE Technical Committee on Electromagnetic Theory	Secretary
Jan. 2017 - Dec. 2018	IEEE Antennas and Propagation Society Kansai Joint Chapter	Secretary
Mar. 2017 - Jan. 2018	IEICE Trans. Electronics Special Section on Recent Progress in Electromagnetic Theory and Its Application (published in January, 2018)	Editorial Secretary
Jan. 2018 - Oct. 2018	IEICE Transactions on Electronics, Special Section on Microwave and Millimeter Wave Technologies (to be published in October, 2018)	Guest Associate Editor
Mar. 2018 - Jan. 2019	IEICE Trans. Electronics Special Section on Recent Progress in Electromagnetic Theory and Its Application (to be published in January, 2019)	Editorial Secretary
Apr. 2018 - May 2018	IEICE Electronics Express	Best Paper Award Committee Member
Apr. 2018 - Present	IEEE International Geoscience and Remote Sensing Symposium (IGARSS) 2019 Organizing Committee	Publications Co-Chair
June 2018 - Present	IEICE Transactions on Communications	Associate Editor
June 2018 - Present	IEICE Technical Committee on Electromagnetic Theory	Committee Member
June 2018 - Present	IEEJ Technical Committee on Electromagnetic Theory	Secretary
June 2018	The 60th IEICE Technical Committee on Antennas and Propagation Workshop Executive Committee	Committee Member
Aug. 2018	University Electrical Engineering Faculty Council 2018	Committee Member
Aug. 2018 - Present	International Symposium on Antennas and Propagation (ISAP) 2020 Registration Committee	Vice Chair
Sep. 2018	IEEE AP-S Kansai Joint Chapter Workshop 2018	Secretary
Sep. 2018	IEEJ Fundamentals and Materials Society Conference 2018	YPC Judge
Sep. 2018 - Apr. 2019	13th European Conference on Antennas and Propagation (Krakow, Poland) TPC	Reviewer
Apr. 2019 - May 2019	IEICE Electronics Express	Best Paper Award Committee Member
Oct. 2019 - Nov. 2020	IEICE Transactions on Electronics, Special Section on Recent Advances in Simulation Techniques and Their Applications for Electronics Editorial Committee (to be published in November, 2020)	Associate Editor
June 2019 - December 2020	IEICE Technical Committee on Antennas and Propagation Workshop (Dr. Toru Takahashi) Executive Committee	Committee Member
June 2019 - Present	IEICE Technical Committee on Electronics Simulation Technology	Committee Member
Apr. 2019 - May 2019	Global Symposium on Millimeter Waves (GSMM) 2019 Technical Program Committee	TPC Member
Oct. 2019 - Nov. 2019	14th European Conference on Antennas and Propagation	Regular Reviewer
Apr. 2020 - Mar. 2022	IEEJ Technical Committee on Electromagnetic Theory	Committee Member
Jan. 2020 - Apr. 2021	IEICE Trans. Electronics Special Section on Recent Progress in Electromagnetic Theory and Its Application (to be published in April 2021)	Associate Editor
Feb. 2020 - Sep. 2020	2020 IEEE Radar Conference (Florence, Italy)	TPC Member
June 2020 - Present	IEICE Technical Committee on Space, Aeronautical and Navigational Electronics	Committee Member
May 2020 - Present	2020 International Conference on Emerging Technologies for Communications	Technical Program Committee
Aug. 2020 - Present	IEICE Communications Express Special Cluster in Advanced Communication Technologies in Conjunction with Main Topics of ICETC2020	Associate Editor
Mar. 2021	European Conference on Antennas and Propagation 2021 (Düsseldorf, Germany)	Regular Reviewer
Nov. 2020 -	IEICE Communications Society, Transactions on Communications, 2020 Paper Award Selection Committee	Committee Member
2021 - Apr. 2022	IEICE Trans. Electronics Special Section on Recent Progress in Electromagnetic Theory and Its Application (to be published in Apr. 2022)	Associate Editor
Oct. 2021 - Nov. 2021	16th European Conference on Antennas and Propagation	Regular Reviewer

Awards

Mar. 19, 2019	Achievement Award	IEICE Electronics Society
Sep. 12, 2018	Achievement Award	IEICE Communications Society
Feb. 28, 2018	Medal Recipient	IEEE Kansai Section
Jan. 21, 2017	IEEE Antennas and Propagation Society Kansai Joint Chapter Young Engineer Technical Meeting Best Presentation Award	IEEE Antennas and Propagation Society Kansai Joint Chapter
Oct 17, 2016	Masao Horiba Award: "Fast Imaging method for security systems using ultrawideband radar"	Horiba Group
Mar. 1, 2016	Encouragement Award	IEICE Kansai Section Student Branch Technical Meeting
Dec. 19, 2015	IEEE Antennas and Propagation Society Kansai Joint Chapter Young Engineer Technical Meeting Best Presentation Award	IEEE Antennas and Propagation Society Kansai Joint Chapter
Sep. 9, 2015	Achievement Award	IEICE Communications Society
Nov. 1, 2012	Best Paper Award: "Pedestrian classification based on radial velocity features of UWB Doppler radar images"	2012 International Symposium on Antennas and Propagation (ISAP 2012)
Nov. 16, 2009	Student Encouragement Award	IEICE Electronics Society
Sep. 25, 2007	Best Student Paper Award	2007 IEEE International Conference on Ultra-Wideband
Sep. 11, 2007	Best Paper Award: "An experimental study on a fast 3-D imaging algorithm for UWB pulse radars"	IEICE Communications Society
Aug. 27, 2007	2007 IEEJ Best Presentation Award: "Study on the frequency-dependent scattering characteristic of human body"	the Institute of Electrical Engineers of Japan (IEEJ)
Mar. 21, 2007	Young Researchers' Award "High-speed imaging of human bodies with UWB pulse radars using the walking motion"	IEICE
Aug. 21, 2004	Paper Award "A phase compensation algorithm for high-resolution pulse radar systems"	2004 International Symposium on Antennas and Propagation (ISAP 2004)

Invited talks

Category	Conference	City	Date	Invited by
Invited Speaker	The XXXI General Assembly of the International Union of Radio Science	Beijing, China	August 21, 2014	Prof. Alexander Yarovoy
Invited Speaker	Seminar on Microwave Imaging at Limoges (SMILE2015)	Limoges, France	June 23, 2015	Dr. Thomas Fromenteze
Invited Speaker	Progress in Electromagnetics Research Symposium (PIERS)	Prague, Czech Republic	July 8, 2015	Prof. Takashi Takenaka, Prof. Andrea Massa, and Dr. Federico Viani
Invited Speaker	2015 IEEE International Conference on Antenna M easurements and Applications	Chiang Mai, Thailand	December 1, 2015	Prof. Christian Pichot
Semi-Plenary Speaker	European Conference on Antennas and Propagation (EuCAP2017) [Photo 1] [Photo 2] [Video]	Paris, France	March 21, 2017	Prof. Alain Sibille
Invited Sapeaker	2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting	San Diego, CA, USA	July 12, 2017	Dr. Okan Yurduseven, Prof. David R. Smith, Dr. Jonah N. Gollub, Dr. Mohammadreza F. Imani, and Dr. Thomas Fromenteze
Invited Speaker	XXXIInd International Union of Radio Science (URSI) General Assembly & Scientific Symposium	Montreal, Canada	August 25, 2017	Prof. Alexander Yarovoy
Invited Speaker	IEEE Conference on Antenna Measurements & Applications	Tsukuba, Ibaraki, Japan	December 5, 2017	Prof. Christian Pichot
Invited Speaker	2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting	Boston, Massachusetts, USA	July 8-13, 2018	Dr. Okan Yurduseven, Prof. David R. Smith, Dr. Jonah N. Gollub, and Dr. Thomas Fromenteze
Invited Speaker	the 40th Progress In Electromagnetics Research Symposium (PIERS)	Toyama, Japan	August 1-4, 2018	Prof. Toshifumi Moriyama and Prof. Motoyuki Sato
Invited Speaker	IEEE International Microwave Biomedical Conference	Nanjing, China	May 6-8, 2019	Dr. Roberto Gomez-Garcia
Invited Speaker	Global Symposium on Millimeter Waves	Sendai Japan	May 22-24, 2019	Dr. Junji Sato

Teaching experience

2020 - Present	System Optimization	Undergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto University	Kyoto, Japan
2019 - Present	Applied Systems Theory	Graduate School of Engineering, Kyoto University	Kyoto, Japan
2019 - Present	Mathematical Description of Natural Phenomena	Liberal Arts and Sciences courses, Kyoto University	Kyoto, Japan
2019 - Present	Advanced Practice of Electrical and Electronic Engineering	Undergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto University	Kyoto, Japan
2019 - Present	Introducion to Elecrical and Electronic Engineering	Undergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto University	Kyoto, Japan
2015 - 2019	Advanced Discrete Mathematics (graph theory)	Graduate School of Engineering, University of Hyogo	Himeji, Japan
2015 - 2019	Discrete Mathematics (Boolean algebra and mathematical logic )	Faculty of Engineering, University of Hyogo	Himeji, Japan
2018 - 2019	Laboratory Experiment in Electrical Engineering	Faculty of Engineering, University of Hyogo	Himeji, Japan
2015 - 2019	Computer Programing Practice	Faculty of Engineering, University of Hyogo	Himeji, Japan
2014 - 2015	Physics Laboratory Experiment (Franck-Hertz experiment, Planck constant, semiconductor and superconductivity)	Faculty of Science, Kyoto University	Kyoto, Japan
2007 - 2011	Laboratory Experiment in Electronic and Electronic Engineering (microwave, matching, waveguide, Smith chart, permittivity measurement)	Faculty of Engineering, Kyoto University	Kyoto, Japan

Major publications (All publications)

Takuya Sakamoto and Toru Sato,
"A Target shape estimation algorithm for pulse radar systems based on boundary scattering transform,"
IEICE Transactions on Communications, vol. E87-B, no. 5, pp. 1357-1365, May 2004.
Takuya Sakamoto and Toru Sato,
"An estimation algorithm of target location and scattered waveforms for UWB pulse radar systems,"
IEICE Transactions on Communications, vol. E87-B, no. 6, pp. 1631-1638, June 2004.
Takuya Sakamoto, Daisuke Umehara, Yoshiteru Morihiro and Makoto Kawai,
"A synchronization method for synchronous CDMA broadband communication systems with GEO satellites,"
IEICE Transactions on Communications, vol. E87-B, no. 8, pp. 2111-2118, Aug. 2004.
Takuya Sakamoto and Toru Sato,
"A phase compensation algorithm for high-resolution pulse radar systems,"
IEICE Transactions on Communications, vol. E87-B, no. 11, pp. 3314-3321, Nov. 2004.
(Invited paper) Toru Sato, Takuya Sakamoto,
"Image reconstruction algorithms for UWB pulse radar systems,"
IEICE Transactions Japanese Edition, vol. J88-B, no. 12, pp. 2311-2325, Dec. 2005.
Shouhei Kidera, Takuya Sakamoto, Satoshi Sugino, and Toru Sato,
"An accurate imaging algorithm with scattered waveform estimation for UWB pulse radars,"
IEICE Transactions on Communications, vol. E89-B, no. 9, pp. 2588-2595, Sep. 2006.
(In Japanese)Takuya Sakamoto, Shouhei Kidera, Toru Sato, Satoshi Sugino,
"An experimental study on a fast 3-D imaging algorithm for UWB pulse radars,"
IEICE Transactions Japanese Edition, vol. J90-B, no. 1, pp. 66-73, Jan. 2007.
Takuya Sakamoto,
"A 2-D image stabilization algorithm for UWB pulse radars with fractional boundary scattering transform,"
IEICE Transactions on Communications, vol. E90-B, no. 1, pp. 131-139, Jan. 2007.
Takuya Sakamoto,
"A fast algorithm for 3-dimensional imaging with UWB pulse radar systems,"
IEICE Transactions on Communications, vol. E90-B, no. 3, pp. 636-644, Mar. 2007.
Shouhei Kidera, Takuya Sakamoto, Toru Sato,
"A high-resolution imaging algorithm without derivatives based on waveform estimation for UWB radars,"
IEICE Transactions on Communications, vol. E90-B, no. 6, pp. 1487-1494, June 2007.
Shouhei Kidera, Takuya Sakamoto, Toru Sato,
"A robust and fast imaging algorithm with an envelope of circles for UWB pulse radars,"
IEICE Transactions on Communications, vol. E90-B, no. 7, pp. 1801-1809, July 2007.
Kentaro Isoda, Takuya Sakamoto, Toru Sato,
"Effective echo detection and accurate orbit estimation algorithms for space debris radar,"
IEICE Transactions on Communications, vol. E91-B, no. 3, pp. 887-895, Mar. 2008.
Shouhei Kidera, Yusuke Kani, Takuya Sakamoto, Toru Sato,
"Fast and accurate 3-D imaging algorithm with linear array antennas for UWB pulse radars,"
IEICE Transactions on Communications, vol. E91-B, no. 8, pp. 2683-2691, Aug. 2008.
Shouhei Kidera, Takuya Sakamoto, and Toru Sato,
"High-resolution and real-time three-dimensional imaging algorithm with envelopes of spheres for UWB radars,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 46, no. 11, pp. 3503-3513, Nov. 2008.
Takuya Sakamoto and Toru Sato,
"2-dimensional imaging of human bodies with UWB radar using approximately uniform walking motion along a straight line with the SEABED algorithm,"
IEICE Transactions on Communications, vol. E91-B, no. 11, pp. 3695-3703, Nov. 2008.
Takuya Sakamoto and Toru Sato,
"Code-division multiple transmission for high-speed UWB radar imaging with an antenna array,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 47, no. 4, pp. 1179-1186, April 2009.
Tomoki Kimura, Hirofumi Taki, Takuya Sakamoto and Toru Sato,
"Experimental study of high-range-resolution medical acoustic imaging for multiple target detection by frequency domain interferometry,"
Japanese Journal of Applied Physics, vol. 48, no. 7, 07GJ07, July 2009.
Shouhei Kidera, Takuya Sakamoto, and Toru Sato,
"High-resolution 3-D imaging algorithm with an envelope of modified spheres for UWB through-the-wall radars,"
IEEE Transactions on Antennas & Propagation, vol. 57, no. 11, pp. 3520-3529, Nov. 2009.
Shouhei Kidera, Takuya Sakamoto, and Toru Sato,
"Accurate UWB radar three-dimensional imaging algorithm for a complex boundary without range points connections,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 48, no. 4, pp. 1993-2004, April 2010.
Hirofumi Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina, Toru Sato,
"Calculus detection for ultrasonography using decorrelation of forward scattered wave,"
Journal of Medical Ultrasonics, vol. 37, no. 3, pp. 129-135, July 2010.
Yuji Matsuki, Takuya Sakamoto, Toru Sato,
"An imaging algorithm of a target with arbitrary motion for ultra wide-band radar with a small number of antennas,"
IEICE Transactions on Communications, vol. E94-B, no. 3, pp. 742-749, March 2011.
Hirofumi Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina, Kenichi Nagae and Toru Sato,
"Small calcification depiction in ultrasound B-mode images using decorrelation of echoes caused by forward scattered waves,"
Journal of Medical Ultrasonics, vol. 38, no. 2, pp. 73-80, April 2011.
Shouhei Kidera, Takuya Sakamoto and Toru Sato,
"Super-resolution UWB radar imaging algorithm based on extended Capon with reference signal optimization,"
IEEE Transactions on Antennas & Propagation, vol. 59, no. 5, pp. 1606 - 1615, May 2011.
Takuya Sakamoto, Hirofumi Taki, and Toru Sato,
"An experimental study of ultrasonic imaging with a reduced number of array elements using the envelope method,"
Acoustical Science and Technology (AST), the Acoustical Society of Japan, vol. 32, no. 4, pp. 143-150 July 2011.
Shuhei Fujita, Takuya Sakamoto and Toru Sato,
"2-dimensional accurate imaging with UWB radar using indoor multipath echoes for a target in shadow regions,"
IEICE Transactions on Communications, vol. E94-B, no. 8, pp. 2366-2374, Aug. 2011.
Hirofumi Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina, and Toru Sato,
"Ultrasound phantom using thin wires for the depiction of calcification -comparison of cross-sections of wire targets and mass targets-,"
IEEJ Transactions on Electronics, Information and Systems, vol. 131, no. 9, pp. 1528-1534, Sep. 2011.
Takuya Sakamoto and Toru Sato,
"Two-dimensional ultrawideband radar imaging of a target with arbitrary translation and rotation,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 49, no. 11, pp. 4493-4502, Nov. 2011.
Shouhei Kidera, Takuya Sakamoto and Toru Sato,
"Extended imaging algorithm based on aperture synthesis with double-scattered waves for UWB radars,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 49, no. 12, pp. 5128-5139, Dec. 2011.
Hirofumi Taki, Kousuke Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina, Motoi Kudo and Toru Sato,
"High range resolution ultrasonographic vascular imaging using frequency domain interferometry with the Capon method,"
IEEE Transactions on Medical Imaging, vol. 31, no. 2, pp. 417-429, Feb. 2012.
Kenshi Saho, Tomoki Kimura, Shouhei Kidera, Hirofumi Taki, Takuya Sakamoto, and Toru Sato,
"Robust and accurate ultrasound 3-D imaging algorithm incorporating adaptive smoothing techniques,"
IEICE Transactions on Communications, vol. E95-B, no. 2, pp. 572-580, Feb. 2012.
Takuya Sakamoto, Yuji Matsuki, and Toru Sato,
"Method for the three-dimensional imaging of a moving target using an ultra-wideband radar with a small number of antennas,"
IEICE Transactions on Communications, vol. E95-B, no. 3, pp. 972-979, March 2012.
Hirofumi Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina and Toru Sato
"Small calcification indicator in ultrasonography using correlation of echoes with a modified Wiener filter,"
Journal of Medical Ultrasonics, vol. 39, no. 3, pp. 127-135, July 2012.
Hirofumi Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina and Toru Sato
"High resolution ultrasound imaging using frequency domain interferometry - suppression of interference using adaptive frequency averaging -,"
IEEJ Transactions on Electronics, Information and Systems, vol. 132, no. 10, pp. 1552-1557, Oct. 2012.
Kenshi Saho, Takuya Sakamoto, Toru Sato, Kenichi Inoue, and Takeshi Fukuda,
"Pedestrian imaging using UWB Doppler radar interferometry,"
IEICE Transactions on Communications, vol. E96-B, no. 2, pp. 613-623, Feb. 2013.
Kenshi Saho, Takuya Sakamoto, Toru Sato, Kenichi Inoue, and Takeshi Fukuda,
"Accurate and real-time pedestrian classification based on UWB Doppler radar images and their radial velocity features,"
IEICE Transactions on Communications, vol. E96-B, no. 10, pp. 2563-2572, Oct. 2013.
Kenshi Saho, Hiroaki Homma, Takuya Sakamoto, Toru Sato, Kenichi Inoue, and Takeshi Fukuda,
"Accurate image separation method for two closely spaced pedestrians using UWB Doppler imaging radar and supervised learning,"
IEICE Transactions on Communications, vol. E97-B, no. 6, pp. 1223-1233, June 2014.
Takuya Sakamoto, Toru Sato, Pascal J. Aubry, and Alexander G. Yarovoy,
"Texture-based automatic separation of echoes from distributed moving targets in UWB radar signals,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 53, no. 1, pp. 352-361, January 2015.
Takuya Sakamoto, Toru Sato, Pascal Aubry, and Alexander Yarovoy,
"Ultra-wideband radar imaging using a hybrid of Kirchhoff migration and Stolt F-K migration with an inverse boundary scattering transform,"
IEEE Transactions on Antennas and Propagation, vol. 63, no. 8, pp. 3502-3512, Aug. 2015.
Hirofumi Taki, Shinya Tanimura, Takuya Sakamoto, Tsuyoshi Shiina and Toru Sato,
"Accurate ultrasound imaging based on Range Point Migration method for the depiction of fetal surface,"
Journal of Medical Ultrasonics, vol. 42, no. 1, pp. 51-58, DOI: 10.1007/s10396-014-0574-4, Sep. 2015.
Takuya Sakamoto, Ryohei Imasaka, Hirofumi Taki, Toru Sato, Mototaka Yoshioka, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Accurate heartbeat monitoring using ultra-wideband radar,"
IEICE Electronics Express, vol. 12, no. 3, pp. 20141197, 2015.
Yuan He, Pavlo Molchanov, Takuya Sakamoto, Pascal Aubry, Francois Le Chevalier, and Alexander Yarovoy,
"Range-Doppler surface: a tool to analyse human target in ultra-wideband radar,"
IET Radar, Sonar & Navigation, vol. 9, no. 9, pp. 1240-1250, DOI: 10.1049/iet-rsn.2015.0065, Dec. 2015.
Takuya Sakamoto, Hiroki Yamazaki, and Toru Sato,
"Two-dimensional imaging of a pedestrian using multiple wideband Doppler interferometers with clustering-based echo association,"
IEICE Transactions on Communications, vol. E98-B, no. 9, pp. 1795-1803, Sep. 2015.
Takuya Sakamoto, Shigeaki Okumura, Ryosuke Imanishi, Hirofumi Taki, Toru Sato, Mototaka Yoshioka, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Remote heartbeat monitoring from human soles using 60-GHz ultra-wideband radar,"
IEICE Electronics Express, vol. 12, no. 21, pp. 20150786, Oct. 2015.
Hiroki Yamazaki, Takuya Sakamoto, Hirofumi Taki, and Toru Sato,
"False image suppression in two-dimensional shape estimates of a walking human using multiple ultra-wideband Doppler radar interferometers,"
IEICE Transactions on Communications, vol. E99-B, no. 1, pp. 134-142, Jan. 2016.
Takuya Sakamoto, Ryohei Imasaka, Hirofumi Taki, Toru Sato, Mototaka Yoshioka, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Feature-based correlation and topological similarity for interbeat interval estimation using ultrawideband radar,"
IEEE Transactions on Biomedical Engineering, vol. 63, no. 4, pp. 747-757, April 2016.
Thomas Fromenteze, Ettien Lazare Kpre, David Carsenat, Cyril Decroze, and Takuya Sakamoto,
"Single-shot compressive multiple-inputs multiple-outputs radar imaging using a two-port passive device,"
IEEE Access, vol. 4, pp. 1050-1060, March 2016.
Takuya Sakamoto, Toru Sato, Pascal Aubry, and Alexander Yarovoy,
"Fast imaging method for security systems using ultrawideband radar,"
IEEE Transactions on Aerospace and Electronic Systems, vol. 52, no. 2, pp. 658-670, April 2016.
Shigeaki Okumura, Takuya Sakamoto, Toru Sato, Mototaka Yoshioka, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Comparison of clutter rejection techniques for measurement of small displacements of body surface using radar,"
Electronics Letters, vol. 52, no. 19, pp. 1635-1637, DOI: 10.1049/el.2016.1461, Sep. 2016.
Takuya Sakamoto, Daichi Akiyama, Takuro Sato, and Toru Sato,
"Spectrum-free estimation of Doppler velocities using ultra-wideband radar,"
IEEE Access, vol. 5, pp. 3240-3249, Oct. 2016.
Takuya Sakamoto, Akihiko Matsuoka, and Hidekuni Yomo,
"Estimation of Doppler velocities from sub-Nyquist ultra-wideband radar measurements,"
IEEE Sensors Journal, vol. 16, no. 23, pp. 8557-8565, Dec. 2016.
Motoshi Anabuki, Shigeaki Okumura, Toru Sato, Takuya Sakamoto, Kenshi Saho, Mototaka Yoshioka, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Ultrawideband radar imaging using adaptive array and Doppler separation,"
IEEE Transactions on Aerospace and Electronic Systems, vol. 53, no. 1, pp. 190-200, Feb. 2017.
Takuya Sakamoto, Pascal J. Aubry, Shigeaki Okumura, Hirofumi Taki, Toru Sato, Alexander G. Yarovoy,
"Noncontact measurement of the instantaneous heart rate in a multi-person scenario using X-band array radar and adaptive array processing,"
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, vol. 8, no. 2, pp. 280-293, DOI: 10.1109/JETCAS.2018.2809582, June 2018.
Ashikur Rahman, Victor M. Lubecke, Olga Boric-Lubecke, Jan H. Prins, and Takuya Sakamoto,
"Doppler radar techniques for accurate respiration characterization and subject identification,"
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, vol. 8, no. 2, pp. 350-359, DOI: 10.1109/JETCAS.2018.2818181, June 2018.
Takuya Sakamoto, Masashi Muragaki, Kazunori Tamura, Shigeaki Okumura, Toru Sato, Kenji Mizutani, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Measurement of instantaneous heart rate using radar echoes from the human head,"
Electronics Letters, vol. 54, no. 14, pp. 864-866, DOI: 10.1049/el.2018.0811, July 2018.
(Invited paper) Kentaro Oishi, Shigeaki Okumura, Takuya Sakamoto, Toru Sato, Kenji Mizutani, Kenichi Inoue, Takeshi Fukuda, and Hiroyuki Sakai,
"Non-contact interbeat interval measurement using higher harmonic components of body surface displacement with ultra-wideband Doppler radar,"
IEICE Transactions Japanese Edition, vol. J101-C, no. 11, pp. 412-420, Nov. 2018.
Takuya Sakamoto, Xiaomeng Gao, Ehsan Yavari, Ashikur Rahman, Olga Boric-Lubecke, and Victor M. Lubecke,
"Hand gesture recognition using a radar echo I-Q plot and a convolutional neural network,"
IEEE Sensors Letters, vol. 2, no. 3, DOI: 10.1109/LSENS.2018.2866371, Sep. 2018.
Takuya Sakamoto and Kosuke Yamashita,
"Noncontact measurement of autonomic nervous system activities based on heart rate variability using ultra-wideband array radar,"
IEEE Journal of Electromagnetics, RF, and Microwaves in Medicine and Biology, vol. 4, no. 3, pp. 208-215, DOI: 10.1109/JERM.2019.2948827, Sep. 2020.
Kazushi Morimoto, Takuya Sakamoto, and Toru Sato,
"Accurate ultra-wideband array radar imaging using four-dimensional unitary ESPRIT,"
IEEE Access, vol. 7, pp. 161363-161374, DOI: 10.1109/ACCESS.2019.2951537, Nov. 2019.
Shuqiong Wu, Takuya Sakamoto, Kentaro Oishi, Toru Sato, Kenichi Inoue, Takeshi Fukuda, Kenji Mizutani, and Hiroyuki Sakai,
"Person-specific heart rate estimation with ultra-wideband radar using convolutional neural networks,"
IEEE Access, vol. 7, pp. 168484-168494, DOI: 10.1109/ACCESS.2019.2954294, Dec. 2019.
Takuya Sakamoto and Koji Nishimura,
"Analytical expression of Capon spectrum for two uncorrelated signals using the inner product of mode vectors,"
IEICE Transactions on Communications, vol. E103-B, no. 4, pp.452-457, DOI: 10.1587/transcom.2019EBP3096, Apr. 2020.
Yang Yang, Chunping Hou, Yue Lang, Takuya Sakamoto, Yuan He, and Wei Xiang,
"Omnidirectional motion classification with monostatic radar system using micro-Doppler signatures,"
IEEE Transactions on Geoscience and Remote Sensing, vol. 58, no. 5, pp. 3574-3587, May 2020, DOI: 10.1109/TGRS.2019.2958178.
(Invited paper) Takuya Sakamoto,
"Personal identification using a convolutional neural network and ultra-wideband radar measurement of walking and sitting motion,"
IEICE Transactions Japanese Edition, vol. J103-C, no. 07, pp. 321-330, Jul. 2020. [English Version]
Takuya Sakamoto and Takato Koda
"Respiratory motion imaging using 2.4-GHz nine-element-array continuous-wave radar,"
IEEE Microwave and Wireless Components Letters, vol. 30, no. 7, pp. 717-720, July 2020. DOI: 10.1109/LMWC.2020.2992541
(Invited paper) Takuya Sakamoto,
"Ultra-wideband radar and wireless human sensing,"
IEICE Transactions Japanese Edition, vol. J103-B, no. 11, pp. 505-514, Nov. 2020. [English Version] DOI: 10.14923/transcomj.2020API0001
Takuya Sakamoto,
"Signal separation using a mathematical model of physiological signals for the measurement of heart pulse wave propagation with array radar,"
IEEE Access, vol. 8, pp. 175921-175931, DOI: 10.1109/ACCESS.2020.3026539, Sep. 2020.
Takuya Sakamoto, Sohei Mitani, and Toru Sato,
"Noncontact monitoring of heartbeat and movements during sleep using a pair of millimeter-wave ultra-wideband radar systems,"
IEICE Transactions on Communications, vol. E104-B, no. 4, pp. 463-471, DOI: 10.1587/transcom.2020EBP3078, Apr. 2021.
Yuji Oyamada, Takehito Koshisaka, and Takuya Sakamoto,
"Experimental demonstration of accurate noncontact measurement of arterial pulse wave displacements using 79-GHz array radar,"
IEEE Sensors Journal, vol. 21, no. 7, pp. 9128-9137, April 2021. DOI: 10.1109/JSEN.2021.3052602
Takuya Sakamoto,
"Generating a super-resolution radar angular spectrum using physiological component analysis,"
IEICE Communications Express, vol. 10, no. 10, pp. 780-785, Oct. 2021. DOI: 10.1587/comex.2021XBL0137
Takato Koda, Takuya Sakamoto, Shigeaki Okumura, Hirofumi Taki,
"Noncontact respiratory measurement for multiple people at arbitrary locations using array radar and respiratory-space clustering,"
IEEE Access, vol. 9, pp. 106895-106906, Jul. 2021. DOI: 10.1109/ACCESS.2021.3099821
Shunsuke Iwata, Takato Koda, and Takuya Sakamoto,
"Multiradar data fusion for respiratory measurement of multiple people,"
IEEE Sensors Journal, vol. 21, no. 22, pp. 25870-25879, Nov. 2021. DOI: 10.1109/JSEN.2021.3117707
Takuya Sakamoto,
"Blind signal separation for array radar measurement using mathematical model of pulse wave propagation,"
IEICE Transactions on Communications, vol. E105-B, no. 8, pp., Aug. 2022.
Takuya Sakamoto and Tsuyoshi Nakamura,
"Noncontact sensing of heart rate variability from facial video using the topology algorithm,"
IEICE Communications Express, Mar. 2022.
Yang Yang, Xiaoyi Yang, Takuya Sakamoto, Francesco Fioranelli, Beichen Li, and Yue Lang,
"Unsupervised domain adaptation for disguised-gait-based person identification on micro-Doppler signatures,"
IEEE Transactions on Circuits and Systems for Video Technology, Mar. 2022. DOI: 10.1109/TCSVT.2022.3161515
Takato Koda, Takuya Sakamoto, Shuqiong Wu, Shigeaki Okumura, Hirofumi Taki, Satoshi Hamada, Susumu Sato, and Kazuo Chin,
"Comparison of machine learning and non-machine learning methods for the sleep apnea detection using millimeter-wave radar,"
IEICE Communications Express, Apr. 2022.

Academic societies

IEEE Senior Member

IEICE Member

IEEJ Member

The Japan Society of Ultrasonics in Medicine Member

United States Patents

Date	Number	Inventors	Title
May 2016	US9693738B2	Mototaka Yoshioka, Takeshi Fukuda, Toru Sato, Takuya Sakamoto	Heartbeat measuring apparatus, heartbeat measuring method, and recording medium
Mar. 2013	US20140213902A1	Kenichi Nagae, Hirofumi Taki, Takuya Sakamoto, Toru Sato	Subject information obtaining apparatus, method for obtaining subject information, and program
Aug. 2012	US9304191B2	Kenichi Nagae, Hirofumi Taki, Takuya Sakamoto, Toru Sato	Subject information obtaining apparatus, subject information obtaining method, and program
May 2012	US8686894B2	Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Kenshi Saho	Radar imaging apparatus, imaging method, and program thereof
Mar. 2009	US2011/0012774A1	Hiroyuki Sakai, Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Yusuke Kani	Range finder, shape measuring device, and methods for them
Apr. 2008	US8410978B2	Hiroyuki Sakai, Takeshi Fukuda, Takuya Sakamoto, Toru Sato	Shape measurement instrument and shape measurement method

Japanese Patents

Date	Number	Inventors
Sep. 2008	JP4143728B - 4143728 (2008-09-03)	Shohei Kidera, Takuya Sakamoto, Toru Sato
Feb. 2009	JP2009025030 - 2009-025030 (2009-02-05)	Shohei Kidera, Takuya Sakamoto, Toru Sato
Sep. 2008	JP2009204572 - 2009-204572 (2009-09-10)	Takayuki Kitamura, Takuya Sakamoto, Toru Sato
Oct. 2009	JP2009222592, 2009-222592 (2009-10-01)	Hiroyuki Sakai, Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Yusuke Kani
Sep. 2013	JP5290766B - 5290766 (2013-09-18)	Hiroyuki Sakai, Takeshi Fukuda, Takuya Sakamoto, Toru Sato,
Oct. 2013	JP5312081B - 5312081 (2013-10-09)	Hirofumi Taki, Toru Sato, Takuya Sakamoto, Tomoki Kimura, Kenichi Nagae
July 2012	JP4977806B - 4977806 (2012-07-18)	Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Kenshi Saho
July 2016	JP5950517B - 5950517 (2016-07-13)	Hirofumi Taki, Takuya Sakamoto, Toru Sato, Kenichi Nagae
Apr. 2015	JP5697719B - 5697719 (2015-04-08)	Hirofumi Taki, Toru Sato, Takuya Sakamoto, Tomoki Kimura, Kenichi Nagae
Dec. 2016	JP2016214876 - 2016-214876 (2016-12-22)	Mototaka Yoshioka, Takeshi Fukuda, Toru Sato, Takuya Sakamoto

Language skills

English CEFR level C2 (highest) (18 January, 2012)
TOEIC: 970 (Listening 495 / Reading 475) (22 June, 2014)

Media

EurekAlert20 January, 2016.
WIRED NEWS UK21 January, 2016

Review Service

IEEE Access
IEEE Geoscience and Remote Sensing Letters
IEEE Journal of Biomedical and Heath Informatics
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
IEEE Sensors Letters
IEEE Sensors Journal
IEEE Signal Processing Letters
IEEE Transactions on Geoscience and Remote Sensing
IEEE Transactions on Image Processing
IEEE Transactions on Signal Processing
IEEE Transactions on Aerospace and Electronic Systems
IEEE Transactions on Industrial Electronics
Elsevier Signal Processing
Elsevier Neurocomputing
IEICE Electronics Express
IEICE Transactions on Communications
IEICE Transactions on Electronics
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
ITE Transactions on Media Technology and Applications
MDPI Sensors
MDPI Information

Seminars

Invited by Prof. Christian Pichot, University of Nice Sophia Antipolis, Nice, France March 15, 2011.
Invited by Prof. Joel Burdick, California Institute of Technology, Pasadena, CA, USA, July 18, 2011.
Invited by Dr.ir. A. Meijerink, University of Twente, Twente, the Netherlands, November 11, 2013.
Invited by Prof. Ingolf Willms and Dr. Rahmi Salman, University of Duisburg-Essen, Duisburg, Germany, November 7, 2013.
Invited by Prof. Tomoaki Ohtsuki, Keio University, Tokyo, Japan, June 13, 2016.
Invited by Prof. Motoyuki Sato, Tohoku University, Sendai, Japan, December 19, 2016.
Invited by Prof. Victor Lubecke and Dr. Ashikur Rahman, University of Hawaii at Manoa, Honolulu, HI, USA, May 5, 2017.

Theses Examined

Leonardo Carrer, Concealed Weapon Detection, Master of Science Thesis, Delft University of Technology, May 29, 2012.
Iakov Chernyak, Inverse algorithms and image reconstruction for subsurface radar systems, Tohoku University, August 16, 2018.

Back to laboratory page