Faculty Profiles - YAMADA Hiroyoshi

Papers - YAMADA Hiroyoshi

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DOA推定のためのアレー校正手法 −信号処理的アプローチ−

山田寛喜

電子情報通信学会総合大会 ( B-1-13 ) 2008.3

Beamspace Post-Doppler法を用いたMWFの性能評価

岩倉慶成, 鈴木潤一郎, 山田寛喜, 山口芳雄, 田邊正宏

電子情報通信学会総合大会 ( B-1-216 ) 2008.3

偏波相関係数を用いた人工物検出に関する一考察

浅川雄祐, 佐藤亮一, 山口芳雄, 山田寛喜

電子情報通信学会総合大会 ( B-1-218 ) 2008.3

Two-dimensional target location estimation technique using leaky coaxial cables Reviewed

Kenji Inomata, Takashi Hirai, Yoshio Yamaguchi, Hiroyoshi Yamada

IEICE TRANSACTIONS ON COMMUNICATIONS E91B ( 3 ) 878 - 886 2008.3

仮想アレーを用いたリニアアレーDOA推定の仰角依存性の校正について

内藤孝, 山田寛喜, 山口芳雄

電子情報通信学会技術研究報告 AP2007-130 ( 1 ) 45 - 50 2008.1

Ku-band FM-CW POLSARによるCCD基礎検討

中村純, 青山和康, 山口芳雄, 山田寛喜, 降旗正忠, 熊谷信夫

電子情報通信学会技術研究報告 SANE2007-118 ( 1 ) 2008.1

Four-component Decomposition of Moving Object by High Speed Acquisition of Scattering Matrix

AOYAMA Kazuyasu, NAKAMURA Jun, YAMAGUCHI Yoshio, YAMADA Hiroyoshi

IEICE technical report SANE2007-123 ( 1 ) 123 - 127 2008.1

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

We have developed a fully polarimetric FM-CW Radar system that can acquire scattering matrix almost simultaneously in time. Conventional polarimetric radar transmits, for example, H-polarized wave and receives H-and V-polarized signals. Then the radar transmits V-polarized wave and receives the H-and V-polarized signals. Therefore the radar switches transmitting polarization H and V, alternatively, which causes a small time-delay between H and V. The delay sometimes causes adverse phase error in scattering matrix. It is desirable to make the delay as small as possible to acquire scattering matrix simultaneously. We have devised to cut the delay by using delay-line for simultaneous scattering matrix acquisition. The delay-line type FM-CW radar was found to be effective in the simultaneous acquisition. A laboratory experiment using four-component decomposition of scattering mechanism supported the advantage of the system.

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Classification of terrain by implementing the correlation coefficient in the circular polarization basis using X-band POLSAR data Reviewed

Yoshio Yamaguchi, Yukari Yamamoto, Hiroyoshi Yamada, Jian Yang, Wolfgang-Martin Boerner

IEICE TRANSACTIONS ON COMMUNICATIONS E91B ( 1 ) 297 - 301 2008.1

Polarimetric scattering model decomposition for Pol-InSAR data Reviewed

H. Yamada, Y. Yamaguchi, R. Sato

International Geoscience and Remote Sensing Symposium (IGARSS) 4 ( 1 ) IV331 - IV334 2008

Polarimetric scattering analysis for simplified man-made structure model on rough and/or inclined ground plane Reviewed

Ryoichi Sato, Yoshio Yamaguchi, Hiroyoshi Yamada

International Geoscience and Remote Sensing Symposium (IGARSS) 4 ( 1 ) IV483 - IV486 2008

Seasonal change monitoring of wetlands by using airborne and satellite polsar sensing Reviewed

Ryoichi Sato, Yoshio Yamaguchi, Hiroyoshi Yamada, Wolfgang-Martin Boerner

International Geoscience and Remote Sensing Symposium (IGARSS) 2 ( 1 ) II289 - II292 2008

The bank-overlapped post-Doppler method and its system design for self-developed parallel processing boards Reviewed

J. Suzuki, H. Yamada, Y. Yamaguchi, M. Tanabe

2008 IEEE Radar Conference, RADAR 2008 2008

POLSAR画像解析を基とした新潟県中越地震の被災住宅の検出

佐藤亮一, 山口芳雄, 山田寛喜

第520回電波研連F分科会 2007.12

Consideration on Adaptive Beamforming for Multiport Parastic Array Radiator Antenna

MORISHITA Masayuki, YAMADA Hiroyoshi, SUN Chen, TAROMARU Makoto, OHIRA Takashi

IEICE technical report AP2007-102 ( 11 ) 1 - 6 2007.11

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

A digital beamforming(DBF) array with adaptive beamforming has limitation that circuit scale and power consumption increase with the number of array elements. In order to circumvent this problem, multiport parastic array radiator(MuPAR) antenna have been proposed. We applied the steepest gradient algorithm (SGA) to optimize the reactances, and applied RLS algorithm to perform DBF at the active elements. We compared adaptive beamforming performance with DBF array. However, the convergence speed is very slow. In this report, We propose a modified fast convergence scheme of adaptive beamforming with the MuPAR antenna. Performance of adaptive beamforming with the MuPAR antenna is examined by the computer simulation.

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Pol-InSAR画像解析におけるESPRIT法を用いた散乱モデル分解法の精度向上

小野田仁, 山田寛喜, 山口芳雄

電子情報通信学会技術研究報告 AP2007-99 ( 10 ) 69 - 74 2007.10