Toshihiko Umehara

According to our database, Toshihiko Umehara authored at least 31 papers between 2002 and 2023.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2023

Development Status of Nict's new X-Band Airborne SAR (Pi-SAR X3).

Shoichiro Kojima, Junpei Uemoto, Akitsugu Nadai, Tatsuharu Kobayashi, Takeshi Matsuoka, Toshihiko Umehara, Masato Tanaka

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2023

2017

Theoretical Characterization of X-Band Multiincidence Angle and Multipolarimetric SAR Data From Rice Paddies at Late Vegetative Stage.

Motofumi Arii, Hiroyoshi Yamada, Tatsuharu Kobayashi, Shoichiro Kojima, Toshihiko Umehara, Tomomi Komatsu, Takeshi Nishimura

IEEE Trans. Geosci. Remote. Sens., 2017

Repeat pass radar interferometry by PI-SAR2 with RF-NAVI.

Shoichiro Kojima, Takeshi Matsuoka, Tatsuharu Kobayashi, Junpei Uemoto, Akitsugu Nadai, Toshihiko Umehara

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

2016

Pleliminary results on repeat pass interferometry of the X-band airborne SAR system (Pi-SAR2) of NICT.

Tatsuharu Kobayashi, Shoichiro Kojima, Toshihiko Umehara, Jyunpei Uemoto, Takeshi Matsuoka, Akitsugu Nadai, Seiho Uratsuka

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

Theoretical characterization of multi incidence angle and fully Polarimetric SAR data from rice paddies.

Motofumi Arii, Takeshi Nishimura, Tomomi Komatsu, Hiroyoshi Yamada, Tatsuharu Kobayashi, Shoichiro Kojima, Toshihiko Umehara

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

2015

Polarimetric calibration of PI-SAR2: Experimental results of 2013 to 2015 observations.

Makoto Satake, Jyunpei Uemoto, Takeshi Matsuoka, Tatsuharu Kobayashi, Shoichiro Kojima, Toshihiko Umehara, Toshifumi Moriyama

Proceedings of the 2015 IEEE International Geoscience and Remote Sensing Symposium, 2015

2014

Polarimetric data analysis of a rainfall event observed by X-band airborne SAR.

Makoto Satake, Takeshi Matsuoka, Tatsuharu Kobayashi, Shoichiro Kojima, Jyunpei Uemoto, Toshihiko Umehara, Seiho Uratsuka, Yoshio Yamaguchi

Proceedings of the 2014 IEEE Geoscience and Remote Sensing Symposium, 2014

Preliminary analysis of cross-track interferometry by synthetic beam of two antennas of along-track interferometric SAR.

Shoichiro Kojima, Toshihiko Umehara, Tatsuharu Kobayashi, Makoto Satake, Jyunpei Uemoto

Proceedings of the 2014 IEEE Geoscience and Remote Sensing Symposium, 2014

Evaluation of digital elevation model generated by an airborne interferometric SAR (Pi-SAR2).

Tatsuharu Kobayashi, Toshihiko Umehara, Jyunpei Uemoto, Makoto Satake, Shoichiro Kojima, Takeshi Matsuoka, Akitsugu Nadai, Seiho Uratsuka

Proceedings of the 2014 IEEE Geoscience and Remote Sensing Symposium, 2014

2013

Development of Pi-SAR2 along-track interferometric SAR system.

Shoichiro Kojima, Toshihiko Umehara, Jyunpei Uemoto, Tatsuharu Kobayashi, Makoto Satake, Seiho Uratsuka

Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium, 2013

Digital elevation model (DEM) generation of craters by an airborne interferometric sar (Pi-SAR2).

Tatsuharu Kobayashi, Toshihiko Umehara, Jyunpei Uemoto, Makoto Satake, Shoichiro Kojima, Takeshi Matsuoka, Akitsugu Nadai, Seiho Uratsuka

Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium, 2013

2012

Damage estimation of the Great East Japan earthquake with airborne SAR (PI-SAR2) data.

Makoto Satake, Tatsuharu Kobayashi, Jyunpei Uemoto, Toshihiko Umehara, Shoichiro Kojima, Takeshi Matsuoka, Akitsugu Nadai, Seiho Uratsuka

Proceedings of the 2012 IEEE International Geoscience and Remote Sensing Symposium, 2012

Damage detection of the great east Japan earthquake by the airborne SAR (PI-SAR2) of NICT.

Tatsuharu Kobayashi, Toshihiko Umehara, Jyunpei Uemoto, Makoto Satake, Shoichiro Kojima, Takeshi Matsuoka, Akitsugu Nadai, Seiho Uratsuka

Proceedings of the 2012 IEEE International Geoscience and Remote Sensing Symposium, 2012

Performance evaluation on cross-track interferometric SAR function of the airborne SAR system (PI-SAR2) OF NICT.

Tatsuharu Kobayashi, Toshihiko Umehara, Jyunpei Uemoto, Makoto Satake, Shoichiro Kojima, Takeshi Matsuoka, Akitsugu Nadai, Seiho Uratsuka

Proceedings of the 2012 IEEE International Geoscience and Remote Sensing Symposium, 2012

2011

Development of the onboard processor for Pi-SAR2.

Jyunpei Uemoto, Seiho Uratsuka, Toshihiko Umehara, Shin-ichi Yamamoto, Shinichi Taira, Makoto Satake, Shoichiro Kojima, Tatsuharu Kobayashi, Masaki Satoh, Kazuyoshi Kawasaki, Takeshi Matsuoka, Akitsugu Nadai, Ryutaro Suzuki

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

Calibration experiments of advanced X-band airborne SAR system, Pi-SAR2.

Makoto Satake, Takeshi Matsuoka, Toshihiko Umehara, Tatsuharu Kobayashi, Akitsugu Nadai, Jyunpei Uemoto, Shoichiro Kojima, Seiho Uratsuka

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

Dependency of backscattering from ocean surface on wind direction by using airborne SAR - low wind speed case.

Akitsugu Nadai, Toshihiko Umehara, Takeshi Matsuoka, Makoto Satake, Tatsuharu Kobayashi, Seiho Uratsuka

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

2009

Development of X-band Airborne Polarimetric and Interferometric SAR with Sub-meter Spatial Resolution.

Akitsugu Nadai, Seiho Uratsuka, Toshihiko Umehara, Takeshi Matsuoka, Tatsuharu Kobayashi, Makoto Satake

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2009

Polarimetric Analysis of the Dependency of Backscattering from Ocean Surface on Wind Direction.

Akitsugu Nadai, Toshihiko Umehara, Takeshi Matsuoka, Seiho Uratsuka, Tatsuharu Kobayashi, Makoto Satake

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2009

Calibration of the High Performance Airborne SAR System (Pi-SAR2).

Takeshi Matsuoka, Toshihiko Umehara, Akitsugu Nadai, Tatsuharu Kobayashi, Makoto Satake, Seiho Uratsuka

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2009

2008

Dependency of NRCS of Ocean Surface on Wind Direction Using an Airborne Dual-Frequency Polarimetric SAR Observation.

Akitsugu Nadai, Toshihiko Umehara, Takeshi Matsuoka, Tatsuharu Kobayashi, Seiho Uratsuka

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2008

2007

Polarimetric Calibration Experiment of ALOS PALSAR with Polarization-Selective Dihedrals.

Makoto Satake, Takeshi Matsuoka, Toshihiko Umehara, Hajime Fukuchi

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2007

Dependency analysis of normalized radar cross section of ocean surface on ocean winds using an airborne dual-frequency polarimetric SAR.

Akitsugu Nadai, Toshihiko Umehara, Takeshi Matsuoka, Makoto Satake, Seiho Uratsuka

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2007

2005

A Study on Polarimetric Correlation Coefficient for Feature Extraction of Polarimetric SAR Data.

Toshifumi Moriyama, Yoshio Yamaguchi, Seiho Uratsuka, Toshihiko Umehara, Hideo Maeno, Makoto Satake, Akitsugu Nadai, Kazuki Nakamura

IEICE Trans. Commun., 2005

Polarimetric SAR Image Analysis Using Model Fit for Urban Structures.

Toshifumi Moriyama, Seiho Uratsuka, Toshihiko Umehara, Hideo Maeno, Makoto Satake, Akitsugu Nadai, Kazuki Nakamura

IEICE Trans. Commun., 2005

Disastrous environment after earthquake observed by airborne SAR (Pi-SAR).

Seiho Uratsuka, Toshifumi Moriyama, Toshihiko Umehara, Akitsugu Nadai, Takeshi Matsuoka, Kazuki Nakamura, Harunobu Masuko

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2005

Polarimetric analysis of the disastorus environment by using Pi-SAR.

Toshifumi Moriyama, Seiho Uratsuka, Toshihiko Umehara, Akitsugu Nadai, Takeshi Matsuoka, Kazuki Nakamura, Harunobu Masuko

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2005

2004

Study on the forest observation in Kushiro wetland by using dual-frequency and fully polarimetric airborne SAR (Pi-SAR) data.

Kazuki Nakamura, Hiroyuki Wakabayashi, Hisashi Shinsho, Hideo Maeno, Seiho Uratsuka, Akitsugu Nadai, Toshihiko Umehara, Toshifumi Moriyama

Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004

A study on extraction of urban areas from polarimetric Synthetic Aperture Radar image.

Toshifumi Moriyama, Seiho Uratsuka, Toshihiko Umehara, Makoto Satake, Akitsugu Nadai, Hideo Maeno, Kazuki Nakamura, Yoshio Yamaguchi

Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004

2002

High-resolution dual-bands interferometric and polarimetric airborne SAR (Pi-SAR) and its applications.

Seiho Uratsuka, Makoto Satake, Tatsuharu Kobayashi, Toshihiko Umehara, Akitsugu Nadai, Hideo Maeno, Harunobu Masuko, Masanobu Shimada

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2002

Range antenna pattern measurements of airborne SAR system with arrayed corner reflectors.

Makoto Satake, Toshihiko Umehara, Hideo Maeno, Seiho Uratsuka, Haruyuki Nakayama

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2002