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Demonstration of wind ranging and velocimetry using low-power, long-duration, and frequency-modulation optical pulse

Research Project

Project/Area Number 17K06484
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Measurement engineering
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

Yoshikawa Eiichi  国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主任研究開発員 (70619395)

Co-Investigator(Kenkyū-buntansha) 牛尾 知雄  大阪大学, 大学院工学研究科, 教授 (50332961)
Project Period (FY) 2017-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsライダ / 風 / 周波数変調 / 信号処理 / エアロゾル / ドローン / 風観測 / 航空気象 / 地球環境計測 / 気候変動 / 計測工学 / リモートセンシング / 応用光学
Outline of Final Research Achievements

A coherent Doppler LIDAR (CDL) with long-duration frequency-modulated pulses was validated. In traditional CDL using single-frequency pulses (PCDL; pulsed CDL), distance and velocity resolution are in a trade-off relation. Meanwhile, CDL using frequency-modulated signals (FMCDL; frequency-modulated CDL) was theoretically proposed in a previous work to dissolve the trade-off relation. Specifically, the FMCDL's distance and velocity resolution are determined by frequency-modulation band width and pulse duration (strictly, auto-correlation function of transmitting waveform and power spectrum of envelope of the waveform), respectively. A prototype was developed in this study to work as both PCDL and FMCDL. From the observed data, one hundred pair of distance-velocity profiles of the PCDL and FMCDL were calculated and compared. The obtained profiles indicated that the FMCDL worked in consistent with the PCDL and accomplished distance and velocity resolution according to the theory.

Academic Significance and Societal Importance of the Research Achievements

本研究で提案されたライダ方式は、従来の方式が持つ距離分解能と速度分解能のトレードオフ関係を解消するもので、その解消によって様々なアウトカムをもたらすと考えられる。学術的な意義としては、距離分解能を保ったまま速度分解能を高めることによって、大気機中のエアロゾルを分解して観測し、気候変動プロセスにおいて重要なエアロゾルの化学変化などを捉えることができると思われる。社会的な意義としては、小型の航空機に影響を与えるスケールの乱流を検知することに、本方式が提供する高距離分解能観測は極めて有効であるため、本技術はドローンなどを用いた新航空輸送の実現に必要不可欠になると予想される。

Report

(7 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (13 results)

All 2022 2021 2020 2019 2018 2017

All Presentation (12 results) (of which Int'l Joint Research: 9 results) Patent(Industrial Property Rights) (1 results)

  • [Presentation] A Simulation Study on Performance of a Coherent Wind Lidar Transmitting Long Duration and Frequency Modulated Pulses2022

    • Author(s)
      Eiichi Yoshikawa, Makoto Aoki, Hironori Iwai, Tomoo Ushio, and Shoken Ishii
    • Organizer
      102nd Annual Meeting of American Meteorological Society
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Distance-Velocity Profile Estimation via Constrained Minimization of Power on Coherent Wind Lidars Transmitting Frequency-Modulated Pulses2021

    • Author(s)
      93.Eiichi Yoshikawa, Makoto Aoki, Hironori Iwai, Tomoo Ushio, and Shoken Ishii
    • Organizer
      101st Annual Meeting, American Meteorological Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Coherent Wind Lidar with Frequency-Modulated and Long-Duration Pulse: Principles and Experiments for Feasibility Study2020

    • Author(s)
      86.Eiichi Yoshikawa, Hiroshi Yamasuge, Makoto Aoki, Hironori Iwai, Tomoo Ushio, and Shoken Ishii
    • Organizer
      100th Annual Meeting, American Meteorological Society (AMS)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Progress in Development of a Laser Radar with Long-Duration Frequency-Modulated Pulse for Measuring Wind2019

    • Author(s)
      80.Hiroshi Yamasuge, Eiichi Yoshikawa, Tomoo Ushio, Shoken Ishii, Makoto Aoki, and Kazuki Hashimoto
    • Organizer
      39th Conference on Radar Meteorology, American Meteorological Society
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 長時間変調パルスレーザを用いたドップラーライダの実証実験の経過2019

    • Author(s)
      山菅大,吉川栄一,牛尾知雄,石井昌憲,青木誠,橋本和樹
    • Organizer
      日本大気電気学会第97回研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] Analytical Feasibility Study of Wind Lidar with Long-Duration Frequency-Modulated Pulse2018

    • Author(s)
      Eiichi Yoshikawa, Tomoo Ushio, and Hiroshi Yamasuge
    • Organizer
      19th Coherent Laser Radar Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental Verification of Wind Lidar with Long-Duration Frequency-Modulated Pulse,” 19th Coherent Laser Radar Conference2018

    • Author(s)
      Hiroshi Yamasuge, Eiichi Yoshikawa, Tomoo Ushio, Shoken Ishii, Makoto Aoki, and Kazuki Hashimoto
    • Organizer
      19th Coherent Laser Radar Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 長時間変調パルスを用いた風観測ライダの研究開発2018

    • Author(s)
      山菅大,吉川栄一,牛尾知雄,石井昌憲,青木誠,橋本和樹
    • Organizer
      第36回レーザセンシングシンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] Analytical Feasibility Study of Wind Lidar with Long-Duration Frequency-Modulated Pulse2018

    • Author(s)
      Eiichi Yoshikawa, Tomoo Ushio, and Hiroshi Yamasuge
    • Organizer
      The 19th Coherent Laser Radar Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental Verification of Wind Lidar with Long-Duration Frequency-Modulated Pulse2018

    • Author(s)
      Hiroshi Yamasuge, Eiichi Yoshikawa, Tomoo Ushio, Shoken Ishii, Makoto Aoki, and Kauzki Hashimoto
    • Organizer
      The 19th Coherent Laser Radar Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 長時間パルスレーザを用いた風観測ライダの研究開発2018

    • Author(s)
      山菅大,吉川栄一,牛尾知雄、石井昌憲、青木誠、橋本和樹
    • Organizer
      日本大気電気学会第96回研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] Analytical Study of Long-Modulated Pulsed Lidar for Wind Sensing2017

    • Author(s)
      Eiichi Yoshikawa and Tomoo Ushio
    • Organizer
      OSA Imaging and Applied Optics Congress
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 計測装置及び計測方法2020

    • Inventor(s)
      吉川英一
    • Industrial Property Rights Holder
      吉川英一
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-055360
    • Filing Date
      2020
    • Related Report
      2019 Research-status Report

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Published: 2017-04-28   Modified: 2024-01-30  

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