Ryo Natsuaki

Publication Activity (10 Years)

Years Active: 2009-2024
Publications (10 Years): 60

Top Topics

Synthetic Aperture

Top Venues

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.

IEEE Trans. Geosci. Remote. Sens.

Publications

Ryu Sugimoto, Ryo Natsuaki, Ryosuke Nakamura, Chiaki Tsutsumi, Yoshio Yamaguchi
Time Series Scattering Power Decomposition Using Ensemble Average in Temporal-Spatial Domains: Application to Forest Disturbance Detection. IEEE Geosci. Remote. Sens. Lett. 21 (2024)
Raiki Kudo, Akira Hirose, Ryo Natsuaki
Removal of Synthetic Aperture Radar Range Ambiguity by Observing Adjacent Regions. IEEE Geosci. Remote. Sens. Lett. 21 (2024)
Gunjan Joshi, Ryo Natsuaki, Akira Hirose
Neural Network Fusion Processing and Inverse Mapping to Combine Multisensor Satellite Data and Analyze the Prominent Features. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 16 (2023)
Gunjan Joshi, Ryo Natsuaki, Akira Hirose
Automated Determination of Normalized Indices Useful for Glacier Surface Classification. IGARSS (2023)
Yicheng Song, Ryo Natsuaki, Akira Hirose
Riemannian Quaternion Self-Organizing Map to Overcome Degree-of-Polarization Error in Polarimetric Ground-Penetrating Radar. IEEE Trans. Geosci. Remote. Sens. 61 (2023)
Yuta Otsuka, Ryo Natsuaki, Akira Hirose
Proposal of Biquaternion Neural Networks for Coherent Processing of Polarization-and-Phase Information in Polsar and Polinsar. IGARSS (2023)
Ryuta Imai, Ryo Natsuaki, Akira Hirose
Estimation of Dielectric Constant Distribution Utilizing Subsurface Objects Based on Radar Image Focusing. IGARSS (2023)
Ryuta Imai, Ryo Natsuaki, Akira Hirose
Target-Phase-Focused Feature Synthesis and Extraction for Weakly Scattering Objects in Ground Penetrating Radar. IGARSS (2023)
Ryo Natsuaki, Ryu Sugimoto, Masanobu Shimada, Chiaki Tsutsumi, Ryosuke Nakamura
Urban Damage Detection Using Temporally Stacked Synthetic Aperture Radar Interferometric Coherence. IGARSS (2023)
Yicheng Song, Ryo Natsuaki, Akira Hirose
Landmine Detection Based on Generalized Riemannian Quaternion Self-Organizing Map. IGARSS (2023)
Lena Azuma, Ryo Natsuaki, Akira Hirose
Skin-Penetrating Interfaces for Millimeter-Wave Non-Invasive Glucose Concentration Estimation: Numerical Analysis. EMBC (2023)
Raito Suzuki, Ryo Natsuaki, Akira Hirose
Extending Observation Coverage of SAR by Separating Range Ambiguous Signals Using PN-sequences. IGARSS (2023)
Ryo Natsuaki, Roger Oliva, Raúl Díez-García, Mingliang Tao, Paolo de Matthaeis
Standardizing The Impact Assessment of Radio Frequency Interference (RFI) in Space-Based Remote Sensing: Challenges and Benefits. IGARSS (2023)
Bungo Konishi, Akira Hirose, Ryo Natsuaki
INSAR Phase Filtering By Attention-Based Reservoir Computing For High Reliability. IGARSS (2023)
Haotian Chen, Ryo Natsuaki, Akira Hirose
Reservoir Computing for Symbol Detection of Optical Wireless Scattering Communications. IJCNN (2023)
Gunjan Joshi, Ryo Natsuaki, Akira Hirose
Application of Inverse Mapping for Automated Determination of Normalized Indices Useful for Land Surface Classification. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 16 (2023)
Haotian Chen, Ryo Natsuaki, Akira Hirose
Symbol Detection for Polarization Shift Keying Based on Quaternion Neural Networks. IJCNN (2023)
Yuya Matsumoto, Ryo Natsuaki, Akira Hirose
Full-Learning Rotational Quaternion Convolutional Neural Networks and Confluence of Differently Represented Data for PolSAR Land Classification. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 15 (2022)
Ryo Natsuaki, Akira Hirose
Polarimetric Analysis of RFI in L-Band SAR System. IGARSS (2022)
Haotian Chen, Ryo Natsuaki, Akira Hirose
Predicting polarization state based on quaternion neural networks to facilitate channel prediction. IJCNN (2022)
Yuya Matsumoto, Ryo Natsuaki, Akira Hirose
Proposal of PolSAR Land Classification Using Full-Learning Quaternion Convolutional Neural Networks. IGARSS (2022)
Masato Ohki, Ryo Natsuaki, Sadayoshi Aoyama, Takeo Tadono
An experiment of flooded building detection using ALOS-2 and a flood experiment field. IGARSS (2022)
Bungo Konishi, Akira Hirose, Ryo Natsuaki
InSAR Phase Unwrapping Using Dynamics of Coupled Phase Oscillators of the Kuramoto Model. IGARSS (2022)
Gunjan Joshi, Ryo Natsuaki, Akira Hirose
Neural Network Model for Multi-Sensor Fusion and Inverse Mapping Dynamics for the Analysis of Significant Factors. IGARSS (2022)
Ryuta Imai, Yicheng Song, Ryo Natsuaki, Akira Hirose
Proposal of Detection of Subsurface Objects with Model-Based Homogeneity to Extend Compressed Sensing. IGARSS (2022)
Haotian Chen, Ryo Natsuaki, Akira Hirose
Polarization-Aware Prediction of Mobile Radio Wave Propagation Based on Complex-Valued and Quaternion Neural Networks. IEEE Access 10 (2022)
Ryuta Imai, Yicheng Song, Ryo Natsuaki, Akira Hirose
Model-Based Homogeneity to Extend Compressed Sensing for Ground Penetrating Radar. IEEE Trans. Geosci. Remote. Sens. 60 (2022)
Seishiro Goto, Ryo Natsuaki, Akira Hirose
. EMBC (2021)
Bungo Konishi, Akira Hirose, Ryo Natsuaki
Complex-Valued Reservoir Computing for Interferometric SAR Applications With Low Computational Cost and High Resolution. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 14 (2021)
Ryo Natsuaki, Ryu Sugimoto, Chiaki Tsutsumi, Ryosuke Nakamura
Emulation of a Sar Interferogram from the Past Satellites for the Present Events. IGARSS (2021)
Bungo Konishi, Akira Hirose, Ryo Natsuaki
Proposal of Complex-Valued Reservoir Computing for Topographic Aspect Classification. IGARSS (2021)
Bungo Konishi, Akira Hirose, Ryo Natsuaki
Generalization characteristics of complex-valued reservoir computing for interferometric synthetic aperture radar applications. APSIPA ASC (2021)
Yuya Matsumoto, Ryo Natsuaki, Akira Hirose
Proposal of PolSAR Land Classification Using Quaternion Convolutional Neural Networks. IGARSS (2021)
Yuta Otsuka, Tomoharu Shimada, Ryo Natsuaki, Akira Hirose
Consideration on Singular-Point Generating Mechanisms by Analyzing the Effect of Phase-and-Polarization Optimization in PolInSAR. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 13 (2020)
Ryo Natsuaki, Pau Prats-Iraola
Suppression of Additional Azimuth Ambiguities Under Multi-Channel and Multi-Waveform SAR. IGARSS (2020)
Yuki Sunaga, Ryo Natsuaki, Akira Hirose
Similar land-form discovery: Complex absolute-value max pooling in complex-valued convolutional neural networks in interferometric synthetic aperture radar. IJCNN (2020)
Ryo Natsuaki, Hiroto Nagai
Synthetic Aperture Radar Flood Detection under Multiple Modes and Multiple Orbit Conditions: A Case Study in Japan on Typhoon Hagibis, 2019. Remote. Sens. 12 (6) (2020)
Ryo Natsuaki, Marc Jäger, Pau Prats-Iraola
Similarity Approach for Radio Frequency Interference Detection and Correction in Multi-Receiver SAR. IGARSS (2020)
Yuki Sunaga, Ryo Natsuaki, Akira Hirose
Complex-Valued Convolutional Neural Networks in Interferometric Synthetic Aperture Radar and Their Teacher-Image Pollution Influence on the Performance. IGARSS (2020)
Yu Li, Sandro Martinis, Marc Wieland, Stefan Schlaffer, Ryo Natsuaki
Urban Flood Mapping Using SAR Intensity and Interferometric Coherence via Bayesian Network Fusion. Remote. Sens. 11 (19) (2019)
Hyunsoo Kim, Jungmin Song, Ryo Natsuaki, Akira Hirose
Dependence of Polarimetric Characteristics on Sar Resolutions: Experimental Analysis. IGARSS (2019)
Yuta Otsuka, Ryo Natsuaki, Akira Hirose
Enhancement of Polarization Mechanism in Pixel-By-Pixel Phase Optimization in Polinsar. IGARSS (2019)
Ryo Natsuaki, Akiko Noda
Demonstration of InSAR-Based Three Dimensional Continuous Deformation Monitoring. IGARSS (2019)
Yuki Sunaga, Ryo Natsuaki, Akira Hirose
Land Form Classification and Similar Land-Shape Discovery by Using Complex-Valued Convolutional Neural Networks. IEEE Trans. Geosci. Remote. Sens. 57 (10) (2019)
Ryo Natsuaki, Nida Sakar, Nestor Yague-Martinez, Muriel Pinheiro, Pau Prats-Iraola
Investigations on the Optimum Combination of Azimuth Phase Coding and Up- and Down-Chirp Modulation for Range Ambiguity Suppression. IGARSS (2019)
Youngjoo Kwak, Ryo Natsuaki, Sang-Ho Yun
Effect of Building Orientation on Urban Flood Mapping Using Alos-2 Ampilitude Images. IGARSS (2018)
Ryo Natsuaki, Akira Hirose
Profiles of RFI in Alos-2 Images - A Case Study in Tokyo Bay, Japan. IGARSS (2018)
Ryo Natsuaki, Akira Hirose
L-Band SAR Interferometric Analysis for Flood Detection in Urban Area - a Case Study in 2015 Joso Flood, Japan. IGARSS (2018)
Tomoharu Shimada, Ryo Natsuaki, Akira Hirose
Pixel-by-Pixel Scattering Mechanism Vector Optimization in High-Resolution PolInSAR. IEEE Trans. Geosci. Remote. Sens. 56 (5) (2018)
Shunichiro Fujinami, Ryo Natsuaki, Kazuhide Ichikawa, Akira Hirose
Experimental Analysis on the Mechanisms of Singular Point Generation in InSAR by Employing Scaled Optical Interferometry. IEEE Trans. Geosci. Remote. Sens. 56 (7) (2018)
Yuki Sunaga, Ryo Natsuaki, Akira Hirose
Proposal of Complex-Valued Convolutional Neural Networks for Similar Land-Shape Discovery in Interferometric Synthetic Aperture Radar. ICONIP (1) (2018)
Ryo Natsuaki, Hiroto Nagai, Naoya Tomii, Takeo Tadono
Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence - A Case Study in 2016 Kumamoto Earthquakes. Remote. Sens. 10 (2) (2018)
Ryo Natsuaki, Masato Ohki, Hiroto Nagai, Takeshi Motohka, Takeo Tadono, Masanobu Shimada, Shinichi Suzuki
Performance of ALOS-2 PALSAR-2 for disaster response. IGARSS (2017)
Ryo Natsuaki, Takeshi Motohka, Takeo Tadono, Shinichi Suzuki
Polarimetric characteristics of temporarily coherent RFI in alos-2 palsar-2. IGARSS (2017)
Ryo Natsuaki, Takeshi Motohka, Masanobu Shimada, Shinichi Suzuki
Burst Misalignment Evaluation for ALOS-2 PALSAR-2 ScanSAR-ScanSAR Interferometry. Remote. Sens. 9 (3) (2017)
Ryo Natsuaki, Takeshi Motohka, Manabu Watanabe, Masanobu Shimada, Shinichi Suzuki
An Autocorrelation-Based Radio Frequency Interference Detection and Removal Method in Azimuth-Frequency Domain for SAR Image. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 10 (12) (2017)
Ryo Natsuaki, Manabu Watanabe, Takeshi Motohka, Shinichi Suzuki
RFI detection and removal in Range-time Azimuth-frequency domain. IGARSS (2016)
Yukihiro Kankaku, Shinichi Suzuki, Takeshi Motohka, Masato Ohki, Ryo Natsuaki, Masanobu Shimada
ALOS-2 operation status. IGARSS (2016)
Ryo Natsuaki, Takeshi Motohka, Manabu Watanabe, Masato Ohki, Rajesh Bahadur Thapa, Hiroto Nagai, Takeo Tadono, Masanobu Shimada, Shinichi Suzuki
Emergency observation and disaster monitoring performed by ALOS-2 PALSAR-2. IGARSS (2016)
Manabu Watanabe, Masashi Sonobe, Ryo Natsuaki, Shinichi Suzuki
Trial of volcanic ash detection using L-band synthetic aperture radar (SAR). IGARSS (2016)
Ryo Natsuaki, Manabu Watanabe, Takeshi Motooka, Masato Ohki, Masanobu Shimada
Accuracy improvement by residue and amplitude based local co-registration method for ALOS-2/PALSAR-2 DInSAR. IGARSS (2015)
Shunichiro Fujinami, Ryo Natsuaki, Akira Hirose
Experimental analysis of singular point generation mechanisms in interferometric SAR using optics: The possibility of singular point generation by interference in a single pixel. IGARSS (2015)
Ryo Natsuaki, Akira Hirose
Changes of dominant scatterers and propagation paths as a possible origin of singular points in radar interferometry: Experimental analysis. IGARSS (2014)
Kotaro Terabayashi, Ryo Natsuaki, Akira Hirose
Ultrawideband Direction-of-Arrival Estimation Using Complex-Valued Spatiotemporal Neural Networks. IEEE Trans. Neural Networks Learn. Syst. 25 (9) (2014)
Ryo Natsuaki, Akira Hirose
Circular property of complex-valued correlation learning in CMRF-based filtering for synthetic aperture radar interferometry. Neurocomputing 134 (2014)
Ryo Natsuaki, Akira Hirose
InSAR Local Co-Registration Method Assisted by Shape-From-Shading. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 6 (2-3) (2013)
Ryo Natsuaki, Akira Hirose
PHase property in complex-correlation and real-imaginary-correlation filtered SAR interferograms and its influence on DEM quality. IGARSS (2013)
Ryo Natsuaki, Akira Hirose
Improvement of ALOS interferogram quality by use of the local co-registration method using singular-point and amplitude information. IGARSS (2012)
Ryo Natsuaki, Akira Hirose
SPEC Method - A Fine Coregistration Method for SAR Interferometry. IEEE Trans. Geosci. Remote. Sens. 49 (1-1) (2011)
Ryo Natsuaki, Akira Hirose
Local co-registration for distortion reduction in SAR interferogram using amplitude information - combination of SPEC method and shape-from-shading -. IGARSS (2011)
Akira Hirose, Ryo Natsuaki
Circular Property in Complex-Valued Correlation Learning Observed in CMRF-Based Singular Unit Restoration for Phase Unwrapping. IScIDE (2011)
Ryo Natsuaki, Akira Hirose
Local, Nonlinear Adaptive Co-registration of Master and Slave Interferometric SAR Complex Image Data for High Quality Digital Elevation Map Generation. IGARSS (5) (2009)