{"id":429,"date":"2026-02-25T11:51:58","date_gmt":"2026-02-25T02:51:58","guid":{"rendered":"https:\/\/u.muroran-it.ac.jp\/imrsl\/?p=429"},"modified":"2026-02-25T11:52:38","modified_gmt":"2026-02-25T02:52:38","slug":"%e5%bd%93%e7%a0%94%e7%a9%b6%e5%ae%a4%e3%81%ae%e8%ab%96%e6%96%87%e3%81%8cieee-access%e8%aa%8c%e3%81%ab%e6%8e%b2%e8%bc%89%e3%81%95%e3%82%8c%e3%81%be%e3%81%97%e3%81%9f%ef%bc%81","status":"publish","type":"post","link":"https:\/\/u.muroran-it.ac.jp\/imrsl\/archives\/429","title":{"rendered":"\u5f53\u7814\u7a76\u5ba4\u306e\u8ad6\u6587\u304cIEEE Access\u8a8c\u306b\u63b2\u8f09\u3055\u308c\u307e\u3057\u305f\uff01"},"content":{"rendered":"\n

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Yuta Izumi, Fathin Nurzaman, Sartika, Masato Komuro, Tomoki Kawarai \u201cDynamic Displacement Monitoring of Bridges using Dual Monostatic Ground-Based MIMO Radar Interferometry,\u201d in IEEE Access<\/em>, Early Access, Feb. 2026.<\/p>\n\n\n\n

https:\/\/ieeexplore.ieee.org\/document\/11408134<\/a><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Abstract<\/h2>\n\n\n\n

As bridges deteriorate over time, the need for effective bridge structural health monitoring (SHM) becomes increasingly critical. Dynamic displacement serves as a key indicator for identifying potential structural issues. This study presents a non-contact, marker-less, cost-effective, portable, and <\/a>image-domain dynamic displacement estimation methodology using ground-based multiple-input multiple-output (GB-MIMO) radar interferometry for bridge SHM. A dual monostatic GB-MIMO radar configuration, combined with a practical photogrammetry-based geocoding approach was introduced to enable two-dimensional (2D) displacement vector estimation. The proposed framework was validated through controlled outdoor experiment as well as field deployment on a three-span steel box girder bridge, utilizing two off-the-shelf W-band MIMO radar units. Radar measurements captured vertical deflection responses induced by moving vehicle loads, with negligible horizontal displacement. Validation against a laser displacement meter (LDM) confirmed sub-millimeter displacement accuracy. Additionally, the extracted natural frequencies showed strong agreement with finite element method (FEM) based numerical analysis, demonstrating the system\u2019s capability for accurate dynamic characterization of bridge structures.<\/p>\n","protected":false},"excerpt":{"rendered":"

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