Research on millimeter-wave multiple-input and multiple-output radar technology for next-generation helicopter forward-looking obstacle detection sensors

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K04931
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 24010:Aerospace engineering-related
• Research Institution: National Institute of Maritime, Port and Aviation Technology
• Principal Investigator: Futatsumori Shunichi 国立研究開発法人海上・港湾・航空技術研究所, 電子航法研究所, 上席研究員 (20551211)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: ミリ波レーダ / 高圧送電線 / 線状障害物 / 平面アンテナ / レーダ断面積 / ブラッグ散乱 / FDTD解析 / 76GHz

Outline of Final Research Achievements

As a typical obstacle in front of a helicopter, detailed radar cross section characteristics of high-voltage power lines are evaluated based on the measurements. The transmit and receive polarization which is suitable for high-voltage power line detection are clarified using the measurement results. In addition, the design and prototype evaluation of a millimeter-wave planar antenna are performed, and the feasibility of the millimeter-wave planar antenna is clarified. Furthermore, after performing an analysis of the characteristics required for high-voltage power line detection, a signal processing circuit is constructed. A 76 GHz band millimeter-wave multiple-input and multiple-output radar experimental system is constructed using COTS products and a test evaluation is performed in an anechoic chamber.

Free Research Field

ミリ波レーダ

Academic Significance and Societal Importance of the Research Achievements

本研究の成果により、航空機前方障害物となる高圧送電線等の線状構造物の検出に適したアンテナ特性および小型平面アンテナ構造を理論解析と測定の両面で検討し、高速移動体の前方障害物探知に利用可能な技術の確立に資することができる。これらは、ミリ波帯において小送信電力レーダを用いた障害物の長距離・高頻度探知法確立のためのキー技術となり得ることから、航空分野のみならず、広範な応用分野において有効なレーダ技術となることが期待できる。