1994 Fiscal Year Final Research Report Summary
Research on Synthetic Aperture FM-CW Imaging Radar Utilizing Polarimetry
| Project/Area Number |
05650385
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
計測・制御工学
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| Research Institution | Niigata University |
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Principal Investigator |
YAMAGUCHI Yoshio Niigata University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50115086)
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| Co-Investigator(Kenkyū-buntansha) |
SENGOKU Masakazu Niigata University, Faculty of Engineering, Professor, 工学部, 教授 (30002017)
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| Project Period (FY) |
1993 – 1994
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| Keywords | radar polarimetry / FM-CW radar / imaging radar |
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| Research Abstract |
This research aimed at developing a 2-dimensional synthetic aperture FM-CW radar utilizing the full vector nature of the electromagnetic waves, i.e., radar polarimetry. The main purpose of this research was to introduce the principle of radar polarimetry into wide-band FM-CW radar imaging. The radar polarimetry has been well established for the monochromatic wave, however, there still remains a question how to incorporate it into a wide hand radar signal for which FM-CW radar resides. The authors pointed out in this research that the beat spectrum obtained in the FM-CW radar system could be replaced as a scattering matrix element which plays an important role in radar polarimetry. Since the beat spectrum after synthetic aperture signal processing has a complex amplitude (magnitude and phase) bearing polarimetric target information, it represents scatttering characteristics of a target depending upon polarization. The authos investigated the characteristic polarization states which are specific to a target in detail as well as the 2-dimensional FM-CW radar imaging principle. Using two linear orthogonally placed targets in a laboratory measurement, it is confirmed that the FM-CW radar acts as a full polarimtric imaging radar system.
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