Space-Frequency Diversity Techniques in Stepped Multiple Frequency CPC Radar

• Project/Area Number: 18K04162
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21030:Measurement engineering-related
• Research Institution: The University of Electro-Communications
• Principal Investigator: Akita Manabu 電気通信大学, 大学院情報理工学研究科, 准教授 (50619393)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: レーダ変復調方式 / 空間・周波数ダイバーシチ / 多周波ステップ方式 / マルチパスフェージング / 周波数ダイバーシチ / 最大比合成 / 固有空間追尾 / レーダ / 空間ダイバーシチ / 変復調 / 多周波ステップCPC方式 / ダイバーシチ技術

Outline of Final Research Achievements

Stepped multiple frequency radar modulation proposed by our research group is a unique new radar modulation method that provides long detectable range and high resolution. In the stepped multiple frequency method, it was shown that a comb-like frequency assign with a center frequency of 80 GHz and a frequency range of ±10 GHz is one of an effective frequency utilization method to mitigate the multipath fading problem. Furthermore, simulation results indicated that the proposed signal processing coherently combining the separated frequency bands could help stable target detection from short to long range.

Academic Significance and Societal Importance of the Research Achievements

次世代のレーダには市街地で運用可能（多目標対処能力），遠距離性と高距離分解能の両立，近距離から遠距離まで安定した検知能力等が求められ，これらを電波法令の特定小電力無線局規格の枠の中において達成することが求められる。多周波ステップ方式において櫛形状の周波数アサインと周波数方向のコヒーレント合成法を融合することにより，上記すべての性能の実現可能性を有するレーダ変復調方式の一構成が示された。

Research Products

• [Journal Article] Study on Comb-Shaped Frequency Assign and Signal Processing of Stepped Multiple Frequency Radar for Mitigating Multi-Path Fading (2022)
  • Author(s): 稲葉敬之，秋田学， 谷口匠
  • Journal Title: 電子情報通信学会論文誌B 通信 Volume: J105-B Issue: 4 Pages: 423-432
  • DOI: 10.14923/transcomj.2021JBP3022
  • ISSN: 1881-0209
  • Year and Date: 2022-04-01
  • Peer Reviewed
• [Journal Article] Parameter Study and Evaluation of Stepped Multiple Frequency Radar for Centimeter-Class Object Detection in Background Clutter Environments (2022)
  • Author(s): 稲葉敬之，秋田学
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 142 Issue: 1 Pages: 58-66
  • DOI: 10.1541/ieejias.142.58
  • NAID: 130008139118
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2022-01-01
  • Peer Reviewed