Measurement of scattering coefficient dependence on soil moisture content and surface roughness by 35 GHz polarimetric scatterometer. - Tetsuya Tagawa; Ken'ichi Okamoto; Akira Higuchi; Tomoo Ushio; Hiroshi Hanado (IGARSS, 2004)

Sampling simulation for estimating the sampling error of space-time average rain rate for TRMM and GPM mission. - Yasuhisa Iida; Ken'ichi Okamoto; Tomoo Ushio; Riko Oki (IGARSS, 2005)

Development and observation of the broad-band radar for meteorological application. - Kazushi Monden; Tomoaki Mega; Tomoo Ushio; Ken'ichi Okamoto (IGARSS, 2005)

The global satellite mapping of precipitation (GSMaP) project. - Ken'ichi Okamoto; Tomoo Ushio; Toshio Iguchi; Nobuhiro Takahashi; Koyuru Iwanami (IGARSS, 2005)

Measurement of scattering properties of vegetation at Ka-band by 35GHhz polarimetric scatterometer. - Tetsuya Tagawa; Ken'ichi Okamoto; Tomoo Ushio (IGARSS, 2005)

Global Precipitation Map using Satelliteborne Microwave Radiometers by the GSMaP Project : Production and Validation. - Takuji Kubota; Hiroshi Hashizume; Nobuhiro Takahashi; Shoichi Shige; Kozo Okamoto; Tomoo Ushio; Kazumasa Aonashi; Misako Kachi (IGARSS, 2006)

A Low-Power High-Resolution Broad-Band Radar Using a Pulse Compression Technique for Meteorological Application. - Tomoaki Mega; Kazushi Monden; Tomoo Ushio; Ken'ichi Okamoto; Zenichiro Kawasaki; Takeshi Morimoto (IEEE Geosci. Remote. Sens. Lett., 2007)

Global Precipitation Map Using Satellite-Borne Microwave Radiometers by the GSMaP Project: Production and Validation. - Takuji Kubota; Shoichi Shige; Hiroshi Hashizume; Kazumasa Aonashi; Nobuhiro Takahashi; Shinta Seto; Yukari N. Takayabu; Tomoo Ushio; Katsuhiro Nakagawa; Koyuru Iwanami; Misako Kachi; Ken'ichi Okamoto (IEEE Trans. Geosci. Remote. Sens., 2007)

Development and Observation of the Ku-band Broad-Band Radar for Meteorological Application. - Eiichi Yoshikawa; Tomoaki Mega; Takeshi Morimoto; Tomoo Ushio; Zen Kawasaki (IGARSS (5), 2008)

Real-Time Spectral Moments Estimation and Ground Clutter Suppression for Precipitation Radar with High Resolution. - Eiichi Yoshikawa; Tomoaki Mega; Takeshi Morimoto; Tomoo Ushio; Zen Kawasaki (IEICE Trans. Commun., 2009)

Wideband Radio Wave Observations of Lightning Discharge by Maido-1 Satellite. - Hiroshi Kikuchi; Takeshi Morimoto; Tomoo Ushio; Zen Kawasaki (IEICE Trans. Commun., 2010)

Development and Initial Observation of High-Resolution Volume-Scanning Radar for Meteorological Application. - Eiichi Yoshikawa; Tomoo Ushio; Zen Kawasaki; Tomoaki Mega; Satoru Yoshida; Takeshi Morimoto; Katsuyuki Imai; Shin'ichiro Nagayama (IEEE Trans. Geosci. Remote. Sens., 2010)

Initial observation results for precipitation on the Ku-band broadband radar network. - Eiichi Yoshikawa; Satoru Yoshida; Takeshi Morimoto; Tomoo Ushio; Zen Kawasaki; Tomoaki Mega (IGARSS, 2011)

Latest observation results of the Ku-band broadband radar (BBR) network project. - Tomoo Ushio; Eiichi Yoshikawa; Shigeharu Shimamura; Zen Kawasaki; Naoki Matayoshi (IGARSS, 2012)

Raindrop size distribution (DSD) retrieval for X-band dual-polarization radar. - Eiichi Yoshikawa; V. Chandrasekar 001; Tomoo Ushio; Zen Kawasaki (IGARSS, 2012)

Bayesian formulation of DSD retrieval algorithm for dual-polarized X-band weather radar network. - Eiichi Yoshikawa; V. Chandrasekar 001; Tomoo Ushio; Zen Kawasaki (IGARSS, 2012)

VHF Radio Wave Observations by Maido-1 Satellite and Evaluation of Its Relationship with Lightning Discharges. - Hiroshi Kikuchi; Satoru Yoshida; Takeshi Morimoto; Tomoo Ushio; Zenichiro Kawasaki (IEICE Trans. Commun., 2013)

MMSE Beam Forming on Fast-Scanning Phased Array Weather Radar. - Eiichi Yoshikawa; Tomoo Ushio; Zen Kawasaki; Satoru Yoshida; Takeshi Morimoto; Fumihiko Mizutani; Masakazu Wada (IEEE Trans. Geosci. Remote. Sens., 2013)

Recent improvements in the global satellite mapping of precipitation (GSMaP). - Misako Kachi; Takuji Kubota; Kazumasa Aonashi; Tomoo Ushio; Shoichi Shige; Munehisa Yamamoto; Tomoaki Mega; Riko Oki (IGARSS, 2014)

2-Dimensional high-quality reconstruction of compressive measurements of phased array weather radar. - Ryosuke Kawami; Akira Hirabayashi; Nobuyuki Tanaka; Motoi Shibata; Takashi Ijiri; Shigeharu Shimamura; Hiroshi Kikuchi; Gwan Kim; Tomoo Ushio (APSIPA, 2016)

Probabilistic attenuation correction in dual-pol radar network. - Shigeharu Shimamura; Tomoo Ushio; Gwan Kim; Eiichi Yoshikawa; V. Chandrasekar 001 (IGARSS, 2016)

Near real time product of the gauge adjusted GSMaP (GSMaP_Gauge_NRT). - Tomoo Ushio; Tomoaki Mega; Takuji Kubota; Misako Kachi (IGARSS, 2016)

"Big Data Assimilation" Toward Post-Petascale Severe Weather Prediction: An Overview and Progress. - Takemasa Miyoshi; Guo-Yuan Lien; Shinsuke Satoh; Tomoo Ushio; Kotaro Bessho; Hirofumi Tomita; Seiya Nishizawa; Ryuji Yoshida; Sachiho A. Adachi; Jianwei Liao 001; Balazs Gerofi; Yutaka Ishikawa; et al. (Proc. IEEE, 2016)

Direction-of-Arrival Estimation of VHF Signals Recorded on the International Space Station and Simultaneous Observations of Optical Lightning. - Hiroshi Kikuchi; Takeshi Morimoto; Mitsuteru Sato; Tomoo Ushio; Masayuki Kikuchi; Atsushi Yamazaki; Makoto Suzuki; Ryohei Ishida; Yuji Sakamoto; Zen Kawasaki (IEEE Trans. Geosci. Remote. Sens., 2016)

A Neural-Network-Based Beamformer for Phased Array Weather Radar. - Tarek Sallam; Adel B. Abd El-Rahman; Masoud Alghoniemy; Zen Kawasaki; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2016)

Probabilistic Attenuation Correction in a Networked Radar Environment. - Shigeharu Shimamura; V. Chandrasekar 001; Tomoo Ushio; Gwan Kim; Eiichi Yoshikawa; Haonan Chen 001 (IEEE Trans. Geosci. Remote. Sens., 2016)

Fast high-quality three-dimensional reconstruction from compressive observation of phased array weather radar. - Ryosuke Kawami; Hidetomo Kataoka; Daichi Kitahara; Akira Hirabayashi; Takashi Ijiri; Shigeharu Shimamura; Hiroshi Kikuchi; Tomoo Ushio (APSIPA, 2017)

Recent progress in global satellite mapping of precipitation (GSMAP) product. - Takuji Kubota; Kazumasa Aonashi; Tomoo Ushio; Shoichi Shige; Yukari N. Takayabu; Yoriko Arai; Tomoko Tashima; Misako Kachi; Riko Oki (IGARSS, 2017)

Osaka urban phased array radar network experiment. - Tomoo Ushio; Shigeharu Shimamura; Hiroshi Kikuchi; Fumihiko Mizutani; Kenichi Naito; Takahiro Watanabe; Masakazu Wada; Nobuhiro Takahashi (IGARSS, 2017)

Multi-Doppler processing for accurate estimation of updraft at low altitudes. - Eiichi Yoshikawa; Tomoo Ushio; V. Chandrasekar 001 (IGARSS, 2017)

Adaptive Pulse Compression Technique for X-Band Phased Array Weather Radar. - Hiroshi Kikuchi; Eiichi Yoshikawa; Tomoo Ushio; Fumihiko Mizutani; Masakazu Wada (IEEE Geosci. Remote. Sens. Lett., 2017)

Performance of Minimum Mean-Square Error Beam Forming for Polarimetric Phased Array Weather Radar. - Hiroshi Kikuchi; Ting Wu; Eiichi Yoshikawa; Tomoo Ushio; Hideto Goto; Fumihiko Mizutani; Masakazu Wada; V. Chandrasekar 001 (IEEE Trans. Geosci. Remote. Sens., 2017)

Application of Adaptive Digital Beamforming to Osaka University Phased Array Weather Radar. - Hiroshi Kikuchi; Eiichi Yoshikawa; Tomoo Ushio; Fumihiko Mizutani; Masakazu Wada (IEEE Trans. Geosci. Remote. Sens., 2017)

Nonlinear Beamforming via Convex Optimization for Phased Array Weather Radar. - Daichi Kitahara; Maya Nakahara; Akira Hirabayashi; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (APSIPA, 2018)

Recent Progress on the GSMaP Multi -satellite Algorithm. - Tomoaki Mega; Tomoo Ushio (IGARSS, 2018)

Improving the Accuracy of Rain Rate Estimates Using X-Band Phased-Array Weather Radar Network. - Hiroshi Kikuchi; Tomoo Ushio; Fumihiko Mizutani; Masakazu Wada (IEEE Trans. Geosci. Remote. Sens., 2018)

Fast-Scanning Phased-Array Weather Radar With Angular Imaging Technique. - Fumihiko Mizutani; Tomoo Ushio; Eiichi Yoshikawa; Shigeharu Shimamura; Hiroshi Kikuchi; Masakazu Wada; Shinsuke Satoh; Toshio Iguchi (IEEE Trans. Geosci. Remote. Sens., 2018)

High Resolution GSMaP with Himawari 8. - Tomoo Ushio; Tomoaki Mega (IGARSS, 2019)

Gauge-Adjusted Global Satellite Mapping of Precipitation. - Tomoaki Mega; Tomoo Ushio; Takahiro Matsuda 001; Takuji Kubota; Misako Kachi; Riko Oki (IEEE Trans. Geosci. Remote. Sens., 2019)

Clutter Reduction for Phased-Array Weather Radar Using Diagonal Capon Beamforming With Neural Networks. - Hiroshi Kikuchi; Eiichi Yoshikawa; Tomoo Ushio; Yasuhide Hobara (IEEE Geosci. Remote. Sens. Lett., 2020)

Precipitation Extremes Monitoring Using the Near-Real-Time GSMaP Product. - Tomoko Tashima; Takuji Kubota; Tomoaki Mega; Tomoo Ushio; Riko Oki (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2020)

Initial Observations for Precipitation Cores With X-Band Dual Polarized Phased Array Weather Radar. - Hiroshi Kikuchi; Taku Suezawa; Tomoo Ushio; Nobuhiro Takahashi; Hiroshi Hanado; Katsuhiro Nakagawa; Masahiko Osada; Tsuyoshi Maesaka; Koyuru Iwanami; Kazuhiro Yoshimi; Fumihiko Mizutani; Masakazu Wada; et al. (IEEE Trans. Geosci. Remote. Sens., 2020)

Some Improvements in the GSMaP_Gauge Algorithm. - Tomoaki Mega; Tomoo Ushio; Takuji Kubota; Tomoko Tashima (IGARSS, 2021)

Adaptive Beamforming Using Steering Vector Correction for Phased-Array Weather Radar. - Hiroshi Kikuchi; Eiichi Yoshikawa; Tomoo Ushio; Yasuhide Hobara (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021)

A Study of Comb Beam Transmission on Phased Array Weather Radars. - Eiichi Yoshikawa; Tomoo Ushio; Hiroshi Kikuchi (IEEE Trans. Geosci. Remote. Sens., 2021)

Compressive Sensing to Reduce the Number of Elements in a Linear Antenna Array With a Phased Array Weather Radar. - Hiroshi Kikuchi; Yasuhide Hobara; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2022)

Nonlinear Beamforming Based on Group-Sparsities of Periodograms for Phased Array Weather Radar. - Daichi Kitahara; Hiroki Kuroda; Akira Hirabayashi; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2022)

An Estimator for Weather Radar Doppler Power Spectrum via Minimum Mean Square Error. - Eiichi Yoshikawa; Naoya Takizawa; Hiroshi Kikuchi; Tomoaki Mega; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2022)

Sparsity-Smoothness-Aware Power Spectral Density Estimation with Application to Phased Array Weather Radar. - Hiroki Kuroda; Daichi Kitahara; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (ICASSP, 2023)

Big Data Assimilation: Real-time 30-second-refresh Heavy Rain Forecast Using Fugaku During Tokyo Olympics and Paralympics. - Takemasa Miyoshi; Arata Amemiya; Shigenori Otsuka; Yasumitsu Maejima; James Taylor; Takumi Honda; Hirofumi Tomita; Seiya Nishizawa; Kenta Sueki; Tsuyoshi Yamaura; Yutaka Ishikawa; Shinsuke Satoh; et al. (SC, 2023)

Convex Estimation of Sparse-Smooth Power Spectral Densities From Mixtures of Realizations With Application to Weather Radar. - Hiroki Kuroda; Daichi Kitahara; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (IEEE Access, 2023)

Coherent Doppler Lidar (CDL) for Measuring Wind with Transmission of Frequency-Modulated Pulse or Continuous Wave. - Eiichi Yoshikawa; V. Chandrasekar 001; Makoto Aoki; Hironori Iwai; Tomoo Ushio; Shoken Ishii (IGARSS, 2024)

Time-Altitude Variation of 30-Second-Update Full Volume Scan Data for Summer Convective Storms Observed With X-Band Dual Polarized Phased Array Weather Radar. - Hiroshi Kikuchi; Yasuhide Hobara; Tomoo Ushio (IEEE Access, 2024)

Recent Advances in Phased Array Weather Radar. - Tomoo Ushio; Yuuki Wada; Syo Yoshida (IEICE Trans. Electron., 2024)

Phase and Amplitude Correction for Adaptive Beamforming of Phased Array Weather Radar. - Yuuki Wada; Hiroshi Kikuchi; Eiichi Yoshikawa; Daichi Kitahara; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2024)

Mitigation of Ground-Clutter Effects by Digital Beamforming With Precomputed Weighting Matrix for Phased Array Weather Radar. - Yuuki Wada; Yutaka Takata; Hiroshi Kikuchi; Daichi Kitahara; Eiichi Yoshikawa; Shigeharu Shimamura; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2024)