Toru SATO


Adaptive Sidelobe Cancellation Technique for Atmospheric Radars Containing Arrays with Nonuniform Gain
Taishi HASHIMOTO Koji NISHIMURA Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/12/01
Vol. E99-B  No. 12  pp. 2583-2591
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
atmospheric radarspartial adaptivityrobust adaptive beamformingclutter suppression
 Summary | Full Text:PDF(1MB)

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)

Two-Dimensional Arrays Optimized for Wide-Scanning Phased Array Based on Potential Function Method
Koji NISHIMURA Toru SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/10/01
Vol. E92-B  No. 10  pp. 3228-3235
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
two-dimensional array optimizationadaptive arraysidelobe reduction
 Summary | Full Text:PDF(2.7MB)

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)

Transfer Information Enhancement with a 2-D Tactile Stimulator Array for an Acoustic Vision Substitute System
Hirofumi TAKI Toru SATO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/05/01
Vol. E90-D  No. 5  pp. 808-815
Type of Manuscript:  PAPER
Category: Rehabilitation Engineering and Assistive Technology
Keyword: 
vision substitute systemtactileacoustichybrid methodhuman interface
 Summary | Full Text:PDF(436.1KB)

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)

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)

A Design Scheme for Electromagnetic Shielding Clothes via Numerical Computation and Time Domain Measurements
Satoru KUROKAWA Toru SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/11/01
Vol. E86-C  No. 11  pp. 2216-2223
Type of Manuscript:  Special Section PAPER (Special Issue on Analytical and Simulation Methods for Electromagnetic Wave Problems)
Category: 
Keyword: 
electromagnetic shielding clothestime domain measurementFDTD methodeffective conductivitynumerical evaluation scheme
 Summary | Full Text:PDF(673.5KB)

A Faster Algorithm of Minimizing AND-EXOR Expressions
Takashi HIRAYAMA Yasuaki NISHITANI Toru SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2708-2714
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis
Keyword: 
AND-EXOR two-level circuitAND-EXOR expressionexclusive-or sum-of-products expressionlogic minimization algorithm
 Summary | Full Text:PDF(239.1KB)

High Sensitivity Radar-Optical Observations of Faint Meteors
Koji NISHIMURA Toru SATO Takuji NAKAMURA Masayoshi UEDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/12/01
Vol. E84-C  No. 12  pp. 1877-1884
Type of Manuscript:  Special Section PAPER (Special Issue on New Technologies in Signal Processing for Electromagnetic-wave Sensing and Imaging)
Category: 
Keyword: 
meteor observationMU radarICCD video camerasensor fusionspace environment
 Summary | Full Text:PDF(397.8KB)

Orbit Determination of Meteors Using the MU Radar
Toru SATO Takuji NAKAMURA Koji NISHIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/09/25
Vol. E83-B  No. 9  pp. 1990-1995
Type of Manuscript:  Special Section PAPER (Special Issue on Advances in Radar Systems)
Category: 
Keyword: 
meteor observationMU radarorbit determinationDoppler pulse compressionspace environment
 Summary | Full Text:PDF(584.4KB)

FOREWORD
Matsuo SEKINE Sakae NAGAOKA Yoshio YAMAGUCHI Ikuo ARAI Shogo HAYASHI Kunitoshi NISHIKAWA Naofumi OKUBO Motoyuki SATO Toru SATO Toru UNO Seiho URATSUKA Matsuichi YAMADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/09/25
Vol. E83-B  No. 9  pp. 1903-1905
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(97.1KB)

Validation and Ground Truth for TRMM Precipitation Radar Using the MU Radar
Toru SATO Toshihiro TERAOKA Iwane KIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/06/25
Vol. E79-B  No. 6  pp. 744-750
Type of Manuscript:  Special Section PAPER (Special Issue on Weather Radar Technology)
Category: 
Keyword: 
TRMM precipitation radarMU radarground truthrain retrieval algorithmnumerical simulation
 Summary | Full Text:PDF(657.2KB)

New Go-Back-N ARQ Protocols for Point-to-Multipoint Communications
Hui ZHAO Toru SATO Iwane KIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/08/25
Vol. E77-B  No. 8  pp. 1013-1022
Type of Manuscript:  PAPER
Category: Communication Theory
Keyword: 
communication theorysatellite communicationpoint-to-multipoint communicationerror detection codesgo-back-N ARQ
 Summary | Full Text:PDF(816.3KB)

Automatic Data Processing Procedure for Ground Probing Radar
Toru SATO Kenya TAKADA Toshio WAKAYAMA Iwane KIMURA Tomoyuki ABE Tetsuya SHINBO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/06/25
Vol. E77-B  No. 6  pp. 831-837
Type of Manuscript:  PAPER
Category: Electronic and Radio Applications
Keyword: 
aperture synthesispulse compressionunderground detectionautomatic data processingoptimizationground probing radar
 Summary | Full Text:PDF(686.9KB)

A Hybrid-ARQ Protocol with Adaptive Rate Error Control
Hui ZHAO Toru SATO Iwane KIMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/12/25
Vol. E76-A  No. 12  pp. 2095-2101
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
information theory and coding theorycommunication theoryhybrid-ARQ error control codeserror correction codesadaptive rate error controlselective-repeat ARQ
 Summary | Full Text:PDF(588.2KB)

High-Resolution Radar Image Reconstruction Using an Arbitrary Array
Toshio WAKAYAMA Toru SATO Iwane KIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/10/25
Vol. E76-B  No. 10  pp. 1305-1312
Type of Manuscript:  Special Section PAPER (Special Issue on Radar Technology)
Category: Subsurface Radar
Keyword: 
radarimage reconstructionmodel fittingnonlinear least-squaresunderground detection
 Summary | Full Text:PDF(671KB)

Parallel Viterbi Decoding Implementation by Multi-Microprocessors
Hui ZHAO Xiaokang YUAN Toru SATO Iwane KIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/06/25
Vol. E76-B  No. 6  pp. 658-666
Type of Manuscript:  PAPER
Category: Communication Theory
Keyword: 
codingerror correction codeconvolutional codeViterbi decodingparallel algorithmparallel Viterbi decodingcoding by microprocessor
 Summary | Full Text:PDF(824.5KB)