Bistatic 3D subsurface radar imaging

Naoki Hayashi; Motoyuki Sato

Bistatic 3D subsurface radar imaging

Department of Basic Studies

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Two design methods of a filter in frequency-spatial frequency domain (f-k filter) have been developed for bistatic radar to suppress direct wave which causes significant artifacts in a radar image. One method is to reject a region in f-k domain, where the region is determined from a position information of a transmitter and a receiver. The other method uses time shift to eliminate a difference of arrival time of the direct wave. Then, f-k spectrum of the direct wave concentrates around frequency axis, and filter to reject DC component in spatial direction is designed. Both methods are verified with a laboratory measurement. They can suppress strong artifacts caused by the direct wave clearly, and give more reliable image to detect a buried object.

Original language	English
Title of host publication	EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9783800730841
Publication status	Published - 2008
Event	7th European Conference on Synthetic Aperture Radar, EUSAR 2008 - Friedrichshafen, Germany Duration: 2008 Jun 2 → 2008 Jun 5

Publication series

Name	Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Volume	1-4
ISSN (Print)	2197-4403

Conference

Conference	7th European Conference on Synthetic Aperture Radar, EUSAR 2008
Country	Germany
City	Friedrichshafen
Period	08/6/2 → 08/6/5

ASJC Scopus subject areas

Signal Processing
Instrumentation

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Cite this

Bistatic 3D subsurface radar imaging. / Hayashi, Naoki; Sato, Motoyuki.

EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar. Institute of Electrical and Electronics Engineers Inc., 2008. (Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR; Vol. 1-4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hayashi, N & Sato, M 2008, Bistatic 3D subsurface radar imaging. in EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar. Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR, vol. 1-4, Institute of Electrical and Electronics Engineers Inc., 7th European Conference on Synthetic Aperture Radar, EUSAR 2008, Friedrichshafen, Germany, 08/6/2.

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AB - Two design methods of a filter in frequency-spatial frequency domain (f-k filter) have been developed for bistatic radar to suppress direct wave which causes significant artifacts in a radar image. One method is to reject a region in f-k domain, where the region is determined from a position information of a transmitter and a receiver. The other method uses time shift to eliminate a difference of arrival time of the direct wave. Then, f-k spectrum of the direct wave concentrates around frequency axis, and filter to reject DC component in spatial direction is designed. Both methods are verified with a laboratory measurement. They can suppress strong artifacts caused by the direct wave clearly, and give more reliable image to detect a buried object.

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