Angular Resolution Improvement of Ocean Surface Current Radar Based on the Khatri-Rao Product Array Processing

Hiroyoshi YAMADA; Naoki OZAWA; Yoshio YAMAGUCHI; Keizo HIRANO; Hiroyuki ITO

doi:10.1587/transcom.E96.B.2469

Angular Resolution Improvement of Ocean Surface Current Radar Based on the Khatri-Rao Product Array Processing

Hiroyoshi YAMADA, Naoki OZAWA, Yoshio YAMAGUCHI, Keizo HIRANO, Hiroyuki ITO

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Ocean surface current radar is a Doppler radar to observe oceanographic information using the Bragg scattering resonance mechanism. In this paper, we consider angular resolution improvement of the radar. The radar employs an antenna array with FMICW operation, then it can resolve angular distribution by Digital Beam Forming (DBF) and distance by Fourier transform of the beat signal obtained by the FMICW radar. In order to obtain sufficient angular resolution, large array length or aperture with increasing the number of elements is needed, that is often difficult to realize in the HF/VHF ocean surface current radar. In this paper we propose to apply the Khatri-Rao (KR) product array processing to the radar. To verify effectiveness of the KR product array processing in angular resolution enhancement for the ocean surface current radar, we apply the KR product array to actual experimental data set of the radar, and show that the method is available to angular resolution enhancement and Doppler spectrum improvement.

Publication: IEICE TRANSACTIONS on Communications Vol.E96-B No.10 pp.2469-2474

Publication Date: 2013/10/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E96.B.2469

Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)

Category: Adaptive Array Antennas/MIMO

Authors

Hiroyoshi YAMADA
  Niigata University
Naoki OZAWA
  Niigata University
Yoshio YAMAGUCHI
  Niigata University
Keizo HIRANO
  the Nagano Japan Radio Co. Ltd.
Hiroyuki ITO
  the Nagano Japan Radio Co. Ltd.

Keyword

ocean surface current radar, DOA estimation, Khatri-Rao product, angular resolution improvement

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Hiroyoshi YAMADA, Naoki OZAWA, Yoshio YAMAGUCHI, Keizo HIRANO, Hiroyuki ITO, "Angular Resolution Improvement of Ocean Surface Current Radar Based on the Khatri-Rao Product Array Processing" in IEICE TRANSACTIONS on Communications, vol. E96-B, no. 10, pp. 2469-2474, October 2013, doi: 10.1587/transcom.E96.B.2469.
Abstract: Ocean surface current radar is a Doppler radar to observe oceanographic information using the Bragg scattering resonance mechanism. In this paper, we consider angular resolution improvement of the radar. The radar employs an antenna array with FMICW operation, then it can resolve angular distribution by Digital Beam Forming (DBF) and distance by Fourier transform of the beat signal obtained by the FMICW radar. In order to obtain sufficient angular resolution, large array length or aperture with increasing the number of elements is needed, that is often difficult to realize in the HF/VHF ocean surface current radar. In this paper we propose to apply the Khatri-Rao (KR) product array processing to the radar. To verify effectiveness of the KR product array processing in angular resolution enhancement for the ocean surface current radar, we apply the KR product array to actual experimental data set of the radar, and show that the method is available to angular resolution enhancement and Doppler spectrum improvement.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E96.B.2469/_p

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@ARTICLE{e96-b_10_2469,
author={Hiroyoshi YAMADA, Naoki OZAWA, Yoshio YAMAGUCHI, Keizo HIRANO, Hiroyuki ITO, },
journal={IEICE TRANSACTIONS on Communications},
title={Angular Resolution Improvement of Ocean Surface Current Radar Based on the Khatri-Rao Product Array Processing},
year={2013},
volume={E96-B},
number={10},
pages={2469-2474},
abstract={Ocean surface current radar is a Doppler radar to observe oceanographic information using the Bragg scattering resonance mechanism. In this paper, we consider angular resolution improvement of the radar. The radar employs an antenna array with FMICW operation, then it can resolve angular distribution by Digital Beam Forming (DBF) and distance by Fourier transform of the beat signal obtained by the FMICW radar. In order to obtain sufficient angular resolution, large array length or aperture with increasing the number of elements is needed, that is often difficult to realize in the HF/VHF ocean surface current radar. In this paper we propose to apply the Khatri-Rao (KR) product array processing to the radar. To verify effectiveness of the KR product array processing in angular resolution enhancement for the ocean surface current radar, we apply the KR product array to actual experimental data set of the radar, and show that the method is available to angular resolution enhancement and Doppler spectrum improvement.},
keywords={},
doi={10.1587/transcom.E96.B.2469},
ISSN={1745-1345},
month={October},}

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TY - JOUR
TI - Angular Resolution Improvement of Ocean Surface Current Radar Based on the Khatri-Rao Product Array Processing
T2 - IEICE TRANSACTIONS on Communications
SP - 2469
EP - 2474
AU - Hiroyoshi YAMADA
AU - Naoki OZAWA
AU - Yoshio YAMAGUCHI
AU - Keizo HIRANO
AU - Hiroyuki ITO
PY - 2013
DO - 10.1587/transcom.E96.B.2469
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E96-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2013
AB - Ocean surface current radar is a Doppler radar to observe oceanographic information using the Bragg scattering resonance mechanism. In this paper, we consider angular resolution improvement of the radar. The radar employs an antenna array with FMICW operation, then it can resolve angular distribution by Digital Beam Forming (DBF) and distance by Fourier transform of the beat signal obtained by the FMICW radar. In order to obtain sufficient angular resolution, large array length or aperture with increasing the number of elements is needed, that is often difficult to realize in the HF/VHF ocean surface current radar. In this paper we propose to apply the Khatri-Rao (KR) product array processing to the radar. To verify effectiveness of the KR product array processing in angular resolution enhancement for the ocean surface current radar, we apply the KR product array to actual experimental data set of the radar, and show that the method is available to angular resolution enhancement and Doppler spectrum improvement.
ER -