Takuya SAKAMOTO


False Image Suppression in Two-Dimensional Shape Estimates of a Walking Human Using Multiple Ultra-Wideband Doppler Radar Interferometers
Hiroki YAMAZAKI Takuya SAKAMOTO Hirofumi TAKI Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/01/01
Vol. E99-B  No. 1  pp. 134-142
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014)
Category: Sensing
Keyword: 
ultra-wideband radarmultiple interferometersDoppler radarwalking humanshape estimationfalse image rejection
 Summary | Full Text:PDF(3.2MB)

Two-Dimensional Imaging of a Pedestrian Using Multiple Wideband Doppler Interferometers with Clustering-Based Echo Association
Takuya SAKAMOTO Hiroki YAMAZAKI Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/09/01
Vol. E98-B  No. 9  pp. 1795-1803
Type of Manuscript:  Special Section PAPER (Special Section on Emerging Technologies on Ambient Sensor Networks toward Future Generation)
Category: 
Keyword: 
radar imagingDoppler radartarget velocityhuman body
 Summary | Full Text:PDF(1.6MB)

Accurate Image Separation Method for Two Closely Spaced Pedestrians Using UWB Doppler Imaging Radar and Supervised Learning
Kenshi SAHO Hiroaki HOMMA Takuya SAKAMOTO Toru SATO Kenichi INOUE Takeshi FUKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/06/01
Vol. E97-B  No. 6  pp. 1223-1233
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
human imagingclosely-spaced pedestriansimage separationUWB Doppler radarsupervised learningsupport vector machine (SVM)
 Summary | Full Text:PDF(5.1MB)

Accurate and Real-Time Pedestrian Classification Based on UWB Doppler Radar Images and Their Radial Velocity Features
Kenshi SAHO Takuya SAKAMOTO Toru SATO Kenichi INOUE Takeshi FUKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2563-2572
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
Category: Sensing
Keyword: 
human imagingpedestrian classificationUWB Doppler radarradial velocity distributionk-nearest neighbor
 Summary | Full Text:PDF(3.8MB)

Pedestrian Imaging Using UWB Doppler Radar Interferometry
Kenshi SAHO Takuya SAKAMOTO Toru SATO Kenichi INOUE Takeshi FUKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/02/01
Vol. E96-B  No. 2  pp. 613-623
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
human imagingpedestrian imagingUWB Doppler radarinterferometryfalse image rejection
 Summary | Full Text:PDF(4.9MB)

Method for the Three-Dimensional Imaging of a Moving Target Using an Ultra-Wideband Radar with a Small Number of Antennas
Takuya SAKAMOTO Yuji MATSUKI Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Vol. E95-B  No. 3  pp. 972-979
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
ultra wideband radarmoving targetradar imagingspheroidthree-dimensional
 Summary | Full Text:PDF(876.8KB)

Robust and Accurate Ultrasound 3-D Imaging Algorithm Incorporating Adaptive Smoothing Techniques
Kenshi SAHO Tomoki KIMURA Shouhei KIDERA Hirofumi TAKI Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/02/01
Vol. E95-B  No. 2  pp. 572-580
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
ultrasound 3-D imagingaccurate imagingrobust imagingadaptive smoothing
 Summary | Full Text:PDF(1.7MB)

2-Dimensional Accurate Imaging with UWB Radar Using Indoor Multipath Echoes for a Target in Shadow Regions
Shuhei FUJITA Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/08/01
Vol. E94-B  No. 8  pp. 2366-2374
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radarmultipath scattering wavesshadow region imaginginterferometryTime-Reversal imaging
 Summary | Full Text:PDF(1.3MB)

An Imaging Algorithm of a Target with Arbitrary Motion for Ultra Wide-Band Radar with a Small Number of Antennas
Yuji MATSUKI Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/03/01
Vol. E94-B  No. 3  pp. 742-749
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
ultra wide-bandpulse radarshape estimationmoving target
 Summary | Full Text:PDF(1MB)

2-Dimensional Imaging of Human Bodies with UWB Radar Using Approximately Uniform Walking Motion along a Straight Line with the SEABED Algorithm
Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/11/01
Vol. E91-B  No. 11  pp. 3695-3703
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB radarSEABED algorithmwalking motionsurveillance system
 Summary | Full Text:PDF(430.6KB)

Fast and Accurate 3-D Imaging Algorithm with Linear Array Antennas for UWB Pulse Radars
Shouhei KIDERA Yusuke KANI Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/08/01
Vol. E91-B  No. 8  pp. 2683-2691
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radarsfast and accurate imagingBSTbi-static radarlinear array antennas
 Summary | Full Text:PDF(1.4MB)

Effective Echo Detection and Accurate Orbit Estimation Algorithms for Space Debris Radar
Kentaro ISODA Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/03/01
Vol. E91-B  No. 3  pp. 887-895
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
space debrisKSGC radarorbit estimationcoherent integration
 Summary | Full Text:PDF(761.8KB)

A Robust and Fast Imaging Algorithm with an Envelope of Circles for UWB Pulse Radars
Shouhei KIDERA Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/07/01
Vol. E90-B  No. 7  pp. 1801-1809
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radarsSEABEDrobust and fast imaginghigh resolution imagingenvelope of circles
 Summary | Full Text:PDF(1.1MB)

A High-Resolution Imaging Algorithm without Derivatives Based on Waveform Estimation for UWB Radars
Shouhei KIDERA Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/06/01
Vol. E90-B  No. 6  pp. 1487-1494
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radarsfast and robust radar imaginginverse problemhigh resolution imagingedge detection
 Summary | Full Text:PDF(748.3KB)

A Fast Algorithm for 3-Dimensional Imaging with UWB Pulse Radar Systems
Takuya SAKAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/03/01
Vol. E90-B  No. 3  pp. 636-644
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
3-Dimagingultra-wideband (UWB)pulse radarfast algorithm
 Summary | Full Text:PDF(527.5KB)

A 2-D Image Stabilization Algorithm for UWB Pulse Radars with Fractional Boundary Scattering Transform
Takuya SAKAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/01/01
Vol. E90-B  No. 1  pp. 131-139
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
ultra-wideband (UWB) pulse radarshape estimationSEABED algorithmboundary scattering transform (BST)stabilizationfractional BST (FBST)
 Summary | Full Text:PDF(815.2KB)

An Accurate Imaging Algorithm with Scattered Waveform Estimation for UWB Pulse Radars
Shouhei KIDERA Takuya SAKAMOTO Satoshi SUGINO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/09/01
Vol. E89-B  No. 9  pp. 2588-2595
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radar systemsSEABEDscattered waveform estimationaccurate shape estimation
 Summary | Full Text:PDF(689.3KB)

A Phase Compensation Algorithm for High-Resolution Pulse Radar Systems
Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/11/01
Vol. E87-B  No. 11  pp. 3314-3321
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
pulse radarphase compensationshape estimationill-posed inverse problemboundary scattering transform
 Summary | Full Text:PDF(535.8KB)

A Synchronization Method for Synchronous CDMA Broadband Communication Systems with GEO Satellites
Takuya SAKAMOTO Daisuke UMEHARA Yoshiteru MORIHIRO Makoto KAWAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/08/01
Vol. E87-B  No. 8  pp. 2111-2118
Type of Manuscript:  Special Section PAPER (Special Section on Recent Fundamental Technologies for Broadband Satellite Communications)
Category: 
Keyword: 
synchronous CDMAGEO satellitesynchronization methodKalman filter
 Summary | Full Text:PDF(613.4KB)

An Estimation Algorithm of Target Location and Scattered Waveforms for UWB Pulse Radar Systems
Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1631-1638
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radarradar imagingwaveform estimationnon-parametric estimationneural network
 Summary | Full Text:PDF(420.8KB)

A Target Shape Estimation Algorithm for Pulse Radar Systems Based on Boundary Scattering Transform
Takuya SAKAMOTO Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/05/01
Vol. E87-B  No. 5  pp. 1357-1365
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
pulse radarnon-parametric estimationshape estimationill-posed inverse problemboundary scattering transform
 Summary | Full Text:PDF(563.1KB)