耐波

[II-190] Study on three-dimensional measurement method of breakwater using RTK-GNSS system type UAV

朝比 翔太¹、*鈴木 高二朗¹、川口 真吾¹、高阪 雄一²、岡崎 裕²、鶴田 修己¹ (1. 国立研究開発法人　海上・港湾・航空技術研究所　港湾空港技術研究所、2. 国土交通省)

Keywords:Phantom 4 RTK, offshore breakwater, UAV equipped with RTK-GNSS system, Maintenance, Ortho-image

With the spread of UAV, utilization of UAV for maintenance of maritime structures is actively promoted. Recently, UAV equipped with RTK-GNSS system with high measurement accuracy has started to spread, and simple and high-accuracy measurement of offshore structures is expected. In this study, we carried out surveys using a UAV equipped with the RTK-GNSS system and examined its accuracy for offshore breakwaters where the setting of the reference point is difficult. As a result, it was confirmed that the 3D model of the breakwater was reproduced with maximum accuracy of about 2 cm by comparing with the altitude value measured on the breakwater.