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Developmentof vibro-Doppler super-resolution imaging and its experimental validation

Research Project

Project/Area Number 26630179
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Measurement engineering
Research InstitutionGunma University

Principal Investigator

Takashi Miwa  群馬大学, 大学院理工学府, 准教授 (30313414)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsイメージング / 超解像 / ドップラ / 空間変調 / 加振 / ドップラ計測
Outline of Final Research Achievements

Generally, the cross-range resolution in coherent imaging is restricted by a point spread function (PSF) of the sensor. Due to the low-pass characteristics of PSF in a spatial-frequency domain, we cannot obtain the high spatial-frequency information. In order to improve the cross range resolution, the bandwidth should widen in the spatial frequency domain. We propose a method in which the spatial frequency shift by using a vibro-Doppler measurement. In this research, we experimentally demonstrate the super-resolution method with vibro-Doppler measurement. The vibro-Doppler measurement can measure high spatial frequency information. Moreover, it can be applied to super-resolution imaging by applying amplitude compensation and demodulation of spatial frequency. we found that this method can improve the spatial resolution by 3 times through the experiment. However, a disadvantage of this method is SNR degradation.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (4 results)

All 2016 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (3 results)

  • [Journal Article] 励磁コイルを用いた加振ドップラレーダによるコンクリート内振動体の選択的イメー ジング2016

    • Author(s)
      三輪空司、栗田伸幸、碓氷淳
    • Journal Title

      コンクリート工学年次論文集

      Volume: Vol.38

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 波数掃引加振ドップラ計測のISARイメージングへの応用2015

    • Author(s)
      三輪空司、小林誠也
    • Organizer
      第13回地下電磁計測ワークショップ
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2015-11-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] バイブロドップラ計測による超解像イメージングに関する実験的検討2015

    • Author(s)
      三輪空司、小林誠也
    • Organizer
      第36回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Place of Presentation
      茨城県つくば市
    • Year and Date
      2015-11-05
    • Related Report
      2015 Annual Research Report
  • [Presentation] SFCW 方式加振超音波ドップラ計測システムによる空間変調計測2014

    • Author(s)
      金子周嶺、三輪空司
    • Organizer
      第35回超音波シンポジウム
    • Place of Presentation
      明治大学駿河台キャンパス(東京都千代田区)
    • Year and Date
      2014-12-03 – 2014-12-05
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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