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 iD iconorcid.org/0000-0003-0177-879X
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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 2005Ph.D. in Informatics
    (Kyoto University)
    Deapartment of Communications and Computer Engineering, Graduate School of Informatics, Kyoto UniversityKyoto, Japan
    April 2000 - March 2002Master of Informatics in Communications and Computer Engineering
    (Kyoto University)
    Deapartment of Communications and Computer Engineering, Graduate School of Informatics, Kyoto UniversityKyoto, Japan
    April 1996 - March 2000Bachelor of Engineering in Electrical and Electronic Engineering
    (Kyoto University)
    Undergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto UniversityKyoto, 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 ProfessorGraduate School of Engineering, Kyoto University Kyoto, Japan
    April 2019 - March 2022 Associate ProfessorGraduate School of Engineering, Kyoto University Kyoto, Japan
    Oct. 2018 - March 2022PRESTO ResearcherJapan Science and Technology Agency Kawaguchi, Japan
    January 2018 - March 2019Technology Development AdvisorHyogo Prefectural Institute of Technology Kobe, Japan
    April 2017 - September 2017Visiting ScholarUniversity of Hawaii at Manoa Honolulu, HI, USA
    August 2016 - September 2016Guest ResearcherDelft University of Technology Delft, The Netherlands
    March 2016Guest ResearcherDelft University of Technology Delft, The Netherlands
    September 2015Guest ResearcherDelft University of Technology Delft, The Netherlands
    April 2015 - March 2019Part-Time ResearcherGraduate School of Informatics, Kyoto University Kyoto, Japan
    April 2015 - March 2019Associate ProfessorGraduate School of Engineering, University of Hyogo Himeji, Japan
    September 2011 - November 2013Visiting Researcher
    JSPS Postdoctoral Fellow for Research Abroad
    Delft University of Technology Delft, The Netherlands
    September 2009Visiting ResearcherUniversity of Nice Sophia-AntipolisNice, France
    April 2007 - March 2015Assistant ProfessorGraduate School of Informatics, Kyoto UniversityKyoto, Japan
    April 2006 - March 2007Research AssociateGraduate School of Informatics, Kyoto UniversityKyoto, Japan
    April 2005 - March 2006JSPS Post-doctoral FellowGraduate School of Informatics, Kyoto UniversityKyoto, Japan
    Feb. 1, 2005 - Mar. 31, 2005Lecturer (Post-doctoral Fellow)Graduate School of Engineering, Kyoto UniversityKyoto, Japan
    Apr. 1, 2004 - Mar. 31, 2005Research AssistantGraduate School of Engineering, Kyoto UniversityKyoto, Japan
    Apr. 1, 2004 - July 31, 2004Teaching AssistantGraduate School of Informatics, Kyoto UniversityKyoto, Japan
  • Social activities
    DateCommitteePosition
    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. 2018IEICE 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 CommitteeVice 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 2020IEICE 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 - Present2020 International Conference on Emerging Technologies for CommunicationsTechnical Program Committee
    Aug. 2020 - PresentIEICE Communications Express Special Cluster in Advanced Communication Technologies in Conjunction with Main Topics of ICETC2020Associate Editor
    Mar. 2021European Conference on Antennas and Propagation 2021 (Düsseldorf, Germany) Regular Reviewer
    Nov. 2020 -IEICE Communications Society, Transactions on Communications, 2020 Paper Award Selection CommitteeCommittee Member
    2021 - Apr. 2022IEICE 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, 2019Achievement AwardIEICE Electronics Society
    Sep. 12, 2018Achievement AwardIEICE Communications Society
    Feb. 28, 2018Medal RecipientIEEE Kansai Section
    Jan. 21, 2017IEEE Antennas and Propagation Society Kansai Joint Chapter Young Engineer Technical Meeting Best Presentation AwardIEEE Antennas and Propagation Society Kansai Joint Chapter
    Oct 17, 2016Masao Horiba Award: "Fast Imaging method for security systems using ultrawideband radar"Horiba Group
    Mar. 1, 2016Encouragement AwardIEICE Kansai Section Student Branch Technical Meeting
    Dec. 19, 2015IEEE Antennas and Propagation Society Kansai Joint Chapter Young Engineer Technical Meeting Best Presentation AwardIEEE Antennas and Propagation Society Kansai Joint Chapter
    Sep. 9, 2015Achievement AwardIEICE 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, 2009Student Encouragement AwardIEICE Electronics Society
    Sep. 25, 2007Best Student Paper Award 2007 IEEE International Conference on Ultra-Wideband
    Sep. 11, 2007Best 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, 2007Young 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
    CategoryConferenceCityDateInvited by
    Invited SpeakerThe XXXI General Assembly of the International Union of Radio ScienceBeijing, ChinaAugust 21, 2014Prof. Alexander Yarovoy
    Invited SpeakerSeminar on Microwave Imaging at Limoges (SMILE2015)Limoges, FranceJune 23, 2015Dr. Thomas Fromenteze
    Invited SpeakerProgress in Electromagnetics Research Symposium (PIERS)Prague, Czech RepublicJuly 8, 2015Prof. Takashi Takenaka, Prof. Andrea Massa, and Dr. Federico Viani
    Invited Speaker2015 IEEE International Conference on Antenna M easurements and ApplicationsChiang Mai, Thailand December 1, 2015Prof. Christian Pichot
    Semi-Plenary SpeakerEuropean Conference on Antennas and Propagation (EuCAP2017)
    [Photo 1] [Photo 2] [Video]
    Paris, FranceMarch 21, 2017Prof. Alain Sibille
    Invited Sapeaker2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science MeetingSan Diego, CA, USAJuly 12, 2017 Dr. Okan Yurduseven, Prof. David R. Smith, Dr. Jonah N. Gollub, Dr. Mohammadreza F. Imani, and Dr. Thomas Fromenteze
    Invited SpeakerXXXIInd International Union of Radio Science (URSI) General Assembly & Scientific SymposiumMontreal, CanadaAugust 25, 2017Prof. Alexander Yarovoy
    Invited SpeakerIEEE Conference on Antenna Measurements & ApplicationsTsukuba, Ibaraki, JapanDecember 5, 2017Prof. Christian Pichot
    Invited Speaker2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science MeetingBoston, Massachusetts, USAJuly 8-13, 2018Dr. Okan Yurduseven, Prof. David R. Smith, Dr. Jonah N. Gollub, and Dr. Thomas Fromenteze
    Invited Speakerthe 40th Progress In Electromagnetics Research Symposium (PIERS)Toyama, JapanAugust 1-4, 2018Prof. Toshifumi Moriyama and Prof. Motoyuki Sato
    Invited SpeakerIEEE International Microwave Biomedical ConferenceNanjing, ChinaMay 6-8, 2019Dr. Roberto Gomez-Garcia
    Invited SpeakerGlobal Symposium on Millimeter WavesSendai JapanMay 22-24, 2019Dr. Junji Sato
  • Teaching experience
    2020 - PresentSystem OptimizationUndergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto UniversityKyoto, Japan
    2019 - PresentApplied Systems TheoryGraduate School of Engineering, Kyoto UniversityKyoto, Japan
    2019 - PresentMathematical Description of Natural PhenomenaLiberal Arts and Sciences courses, Kyoto UniversityKyoto, Japan
    2019 - PresentAdvanced Practice of Electrical and Electronic EngineeringUndergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto UniversityKyoto, Japan
    2019 - PresentIntroducion to Elecrical and Electronic EngineeringUndergraduate School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto UniversityKyoto, Japan
    2015 - 2019Advanced Discrete Mathematics
    (graph theory)
    Graduate School of Engineering, University of HyogoHimeji, Japan
    2015 - 2019Discrete Mathematics
    (Boolean algebra and mathematical logic )
    Faculty of Engineering, University of HyogoHimeji, Japan
    2018 - 2019Laboratory Experiment in Electrical EngineeringFaculty of Engineering, University of HyogoHimeji, Japan
    2015 - 2019Computer Programing PracticeFaculty of Engineering, University of HyogoHimeji, Japan
    2014 - 2015Physics Laboratory Experiment
    (Franck-Hertz experiment, Planck constant, semiconductor and superconductivity)
    Faculty of Science, Kyoto UniversityKyoto, Japan
    2007 - 2011Laboratory Experiment in Electronic and Electronic Engineering
    (microwave, matching, waveguide, Smith chart, permittivity measurement)
    Faculty of Engineering, Kyoto UniversityKyoto, Japan
  • Major publications (All publications)
    1. 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.
    2. 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.
    3. 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.
    4. 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.
    5. (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.
    6. 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.
    7. (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.
    8. 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.
    9. 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.
    10. 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.
    11. 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.
    12. 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.
    13. 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.
    14. 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.
    15. 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.
    16. 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.
    17. 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.
    18. 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.
    19. 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.
    20. 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.
    21. 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.
    22. 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.
    23. 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.
    24. 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.
    25. 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.
    26. 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.
    27. 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.
    28. 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.
    29. 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.
    30. 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.
    31. 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.
    32. 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.
    33. 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.
    34. 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.
    35. 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.
    36. 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.
    37. 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.
    38. 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.
    39. 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.
    40. 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.
    41. 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.
    42. 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.
    43. 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.
    44. 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.
    45. 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.
    46. 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.
    47. 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.
    48. 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.
    49. 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.
    50. 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.
    51. 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.
    52. 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.
    53. 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.
    54. 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.
    55. (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.
    56. 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.
    57. 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.
    58. 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.
    59. 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.
    60. 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.
    61. 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.
    62. (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]
    63. 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
    64. (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
    65. 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.
    66. 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.
    67. 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
    68. 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
    69. 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
    70. 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
    71. 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.
    72. Takuya Sakamoto and Tsuyoshi Nakamura,
      "Noncontact sensing of heart rate variability from facial video using the topology algorithm,"
      IEICE Communications Express, Mar. 2022.
    73. 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
    74. 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
    DateNumberInventorsTitle
    May 2016US9693738B2 Mototaka Yoshioka, Takeshi Fukuda, Toru Sato, Takuya Sakamoto Heartbeat measuring apparatus, heartbeat measuring method, and recording medium
    Mar. 2013US20140213902A1 Kenichi Nagae, Hirofumi Taki, Takuya Sakamoto, Toru Sato Subject information obtaining apparatus, method for obtaining subject information, and program
    Aug. 2012US9304191B2 Kenichi Nagae, Hirofumi Taki, Takuya Sakamoto, Toru Sato Subject information obtaining apparatus, subject information obtaining method, and program
    May 2012US8686894B2 Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Kenshi Saho Radar imaging apparatus, imaging method, and program thereof
    Mar. 2009US2011/0012774A1 Hiroyuki Sakai, Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Yusuke Kani Range finder, shape measuring device, and methods for them
    Apr. 2008US8410978B2 Hiroyuki Sakai, Takeshi Fukuda, Takuya Sakamoto, Toru Sato Shape measurement instrument and shape measurement method
  • Japanese Patents
    DateNumberInventors
    Sep. 2008JP4143728B - 4143728 (2008-09-03) Shohei Kidera, Takuya Sakamoto, Toru Sato
    Feb. 2009JP2009025030 - 2009-025030 (2009-02-05) Shohei Kidera, Takuya Sakamoto, Toru Sato
    Sep. 2008JP2009204572 - 2009-204572 (2009-09-10) Takayuki Kitamura, Takuya Sakamoto, Toru Sato
    Oct. 2009JP2009222592, 2009-222592 (2009-10-01) Hiroyuki Sakai, Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Yusuke Kani
    Sep. 2013JP5290766B - 5290766 (2013-09-18) Hiroyuki Sakai, Takeshi Fukuda, Takuya Sakamoto, Toru Sato,
    Oct. 2013JP5312081B - 5312081 (2013-10-09) Hirofumi Taki, Toru Sato, Takuya Sakamoto, Tomoki Kimura, Kenichi Nagae
    July 2012JP4977806B - 4977806 (2012-07-18) Takeshi Fukuda, Kenichi Inoue, Toru Sato, Takuya Sakamoto, Kenshi Saho
    July 2016JP5950517B - 5950517 (2016-07-13) Hirofumi Taki, Takuya Sakamoto, Toru Sato, Kenichi Nagae
    Apr. 2015JP5697719B - 5697719 (2015-04-08) Hirofumi Taki, Toru Sato, Takuya Sakamoto, Tomoki Kimura, Kenichi Nagae
    Dec. 2016JP2016214876 - 2016-214876 (2016-12-22) Mototaka Yoshioka, Takeshi Fukuda, Toru Sato, Takuya Sakamoto
  • Language skills
  • Media
  • Review Service
  • Seminars
  • Theses Examined
    1. Leonardo Carrer, Concealed Weapon Detection, Master of Science Thesis, Delft University of Technology, May 29, 2012.
    2. Iakov Chernyak, Inverse algorithms and image reconstruction for subsurface radar systems, Tohoku University, August 16, 2018.
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