• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Extended Signal Processing by Sparse Arrays and Its Application to High-Resolution Sensing

Research Project

Project/Area Number 20K04500
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21030:Measurement engineering-related
Research InstitutionYokohama National University

Principal Investigator

Ichige Koichi  横浜国立大学, 大学院工学研究院, 教授 (10313470)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsスパースアレー / センシング / 拡張アレー信号処理 / アレー信号処理
Outline of Research at the Start

本研究は,高分解能レーダを実現するための2つの要素技術:「スパースアレー」と「拡張アレー信号処理」を踏まえて,高精度センシングを指向した低コスト信号処理方式を確立する.さらに,ミリ波MIMOレーダに適用して,信号処理量を増やさずに,分解能の大幅な向上を目指すものである.特にスパースアレー,拡張アレー信号処理,信号補間・推定に関する独自のアイデアをMIMOレーダに適用することで,きわめて実用的な高分解能センシングの達成を目標とする.

Outline of Final Research Achievements

This research aims at developing high resolution sensing using sparse arrays and extended signal processing. The achievements are (1) high efficiency sparse linear arrays, (2) optimization of 2-D sparse arrays based on deep learning, and (3) beamforming application and signal modulation/demodulation. In (1) sparse linear arrays, a novel sparse array configuration called GENAMS (Generalized ENAMS) has been proposed which enhance degree of freedom while suppressing mutual coupling effect. So far it is regarded as one of the best sparse linear arrays.

Academic Significance and Societal Importance of the Research Achievements

新たなスパースリニアアレー構造を構築したこと,およびそのアレー構造がアレー自由度を大いに高めつつ,相互結合の影響を低減したこと,さらにサブアレー化により計算コスト低減の目途をつけたことが挙げられる.特にGENAMS (Generalized ENAMS)は,現時点では世界で最も優れたスパースリニアアレー構造として認識されており,今後さらなる発展が期待できる.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (21 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (11 results) (of which Int'l Joint Research: 9 results)

  • [Journal Article] A Generalized Extended Nested Array Design via Maximum Inter-Element Spacing Criterion2023

    • Author(s)
      Wandale Steven、Ichige Koichi
    • Journal Title

      IEEE Signal Processing Letters

      Volume: 30 Pages: 31-35

    • DOI

      10.1109/lsp.2023.3238912

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flexible extended nested arrays for DOA estimation: Degrees of freedom perspective2022

    • Author(s)
      Wandale Steven、Ichige Koichi
    • Journal Title

      Signal Processing

      Volume: 201 Pages: 108710-108710

    • DOI

      10.1016/j.sigpro.2022.108710

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Adaptive Beamforming by Extension and Phase Restoration of Sparse Array Input Signal2021

    • Author(s)
      森本 慎也、岩崎 翔、市毛 弘一
    • Journal Title

      電子電子情報通信学会論文誌A 基礎・境界

      Volume: J104-A Issue: 12 Pages: 250-257

    • DOI

      10.14923/transfunj.2021JAP1014

    • ISSN
      1881-0195
    • Year and Date
      2021-12-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] FMCW radar with multiple initial frequencies for robust source number estimation2021

    • Author(s)
      Saito Ryo、Kashiwagi Katsuhisa、Arakawa Nobuya、Hamada Shohei、Ichige Koichi
    • Journal Title

      IEICE Communications Express

      Volume: 10 Issue: 9 Pages: 698-703

    • DOI

      10.1587/comex.2021SPL0031

    • NAID

      130008082843

    • ISSN
      2187-0136
    • Year and Date
      2021-09-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modified MODE for increasing the maximum number of sources in DOA estimation2021

    • Author(s)
      Hamada Shohei、Ichige Koichi
    • Journal Title

      IEICE Communications Express

      Volume: 10 Issue: 7 Pages: 391-397

    • DOI

      10.1587/comex.2021XBL0085

    • NAID

      130008060771

    • ISSN
      2187-0136
    • Year and Date
      2021-07-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimization and Hole Interpolation of 2-D Sparse Arrays for Accurate Direction-of-Arrival Estimation2021

    • Author(s)
      NAKAMURA Shogo、IWAZAKI Sho、ICHIGE Koichi
    • Journal Title

      IEICE Transactions on Communications

      Volume: E104.B Issue: 4 Pages: 401-409

    • DOI

      10.1587/transcom.2020EBP3035

    • NAID

      130008014020

    • ISSN
      0916-8516, 1745-1345
    • Year and Date
      2021-04-01
    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of sparse arrays via deep learning for enhanced DOA estimation2021

    • Author(s)
      Wandale Steven、Ichige Koichi
    • Journal Title

      EURASIP Journal on Advances in Signal Processing

      Volume: 2021 Issue: 1 Pages: 1-1

    • DOI

      10.1186/s13634-021-00727-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simulated Annealing Assisted Sparse Array Selection Utilizing Deep Learning2021

    • Author(s)
      Wandale Steven、Ichige Koichi
    • Journal Title

      IEEE Access

      Volume: 9 Pages: 156907-156914

    • DOI

      10.1109/access.2021.3129856

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] DOA-Based Weighted Spatial Filter Design for Sum and Difference Composite Co-Array2020

    • Author(s)
      IWAZAKI Sho、NAKAMURA Shogo、ICHIGE Koichi
    • Journal Title

      IEICE Transactions on Communications

      Volume: E103.B Issue: 10 Pages: 1147-1154

    • DOI

      10.1587/transcom.2019EBP3213

    • NAID

      130007920558

    • ISSN
      0916-8516, 1745-1345
    • Year and Date
      2020-10-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Extended beamforming by optimum 2-D sparse arrays2020

    • Author(s)
      Nakamura Shogo、Iwazaki Sho、Ichige Koichi
    • Journal Title

      IEICE Communications Express

      Volume: 9 Issue: 6 Pages: 200-206

    • DOI

      10.1587/comex.2019SPL0020

    • NAID

      130007850866

    • ISSN
      2187-0136
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] アトミックノルム最小化を用いた相関波の劣決定到来方向推定2023

    • Author(s)
      尾畑聡一
    • Organizer
      電子情報通信学会信号処理研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Flexible Extended Nested Array with Multiple Subarrays Achieving Improved Degrees of Freedom2022

    • Author(s)
      Steven Wandale
    • Organizer
      European Signal Processing Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Novel Sparse Linear Array Design via Generalized Interelement Spacing Criterion Achieving Enhanced Degree-of-Freedom and Hole-Free Difference Co-Array2022

    • Author(s)
      Steven Wandale
    • Organizer
      電子情報通信学会信号処理シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] A Nested Array Geometry with Enhanced Degrees of Freedom and Hole-Free Difference Coarray2021

    • Author(s)
      Steven Wandale
    • Organizer
      European Signal Processing Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Robust Source Number Estimation Based on FMCW Radar with Multiple Initial Frequencies2021

    • Author(s)
      Ryo Saito
    • Organizer
      International Symposium on Antennas and Propagation
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Extended Beamforming by Restored Phase Information of Virtual Array Input Signal2021

    • Author(s)
      Shinya Morimoto
    • Organizer
      International Symposium on Antennas and Propagation
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Robust Source Number Estimation using Annihilating Filter and Downsampling Scheme2021

    • Author(s)
      Shohei Hamada
    • Organizer
      International Symposium on Antennas and Propagation
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 2D Sparse Array Selection via Deep Leaning2021

    • Author(s)
      Steven Wandale
    • Organizer
      International Symposium on Antennas and Propagation
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] On the DOA Estimation Performance of Optimum Arrays Based on Deep Learning2020

    • Author(s)
      Steven Wandale
    • Organizer
      IEEE Sensor Array and Multichannel Signal Processing Workshop
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Note on The Maximum Number of Sources in DOA Estimation by MODE2020

    • Author(s)
      Shohei Hamada
    • Organizer
      IEEE Sensor Array and Multichannel Signal Processing Workshop
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Robust Source Number Estimation Based on Denoising Preprocessing2020

    • Author(s)
      Koichi Ichige
    • Organizer
      IEEE Sensor Signal Processing for Defence Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi