无人船近海水深测量与抗风浪能力评估北大核心CSCD

传统载人测量船吃水深,无法进行浅海水深测量,因此吃水极浅的无人船为近海水深测量提供了新途径。本文利用无人船无验潮测深与GNSS网络RTK技术,在不同的风浪条件下进行了近海水深测量试验;并从轨迹跟踪与水深测量精度方面,定量评估了无人船野外作业的抗风浪能力。结果表明:0~0.3 m浪、0~2级风是无人船近海测量作业的理想风浪阈值;风浪过大会导致无人船路径跟踪精度较低,难以保证测量成果质量。在理想的风浪阈值内,无人船无验潮测深技术能实现近海水深的高精度测量,满足相关测深规范要求,在近海水深与海底地形测量中具有广阔的应用前景。

Assessment of the bathymetry and ability to withstand wind and waves in shallow waters for unmanned surface vessels

Traditional survey vessels can not perform bathymetry in shallow waters due to their large draft values. Unmanned surface vessels(USV) with small draft values provide new solutions for bathymetry in shallow waters. Using USV, non-tide sounding and network GNSS RTK technology, the bathymetry experiments in shallow waters are performed under different wind and waves conditions. The ability of USV to withstand wind and waves while working in shallow waters is quantitatively assessed from path tracking precision and bathymetry accuracy. The results show that wave height of 0~0.3 m and wind level of 0~2 are the reasonable threshold for bathymetry in shallow waters using USV. The USV with non-tide sounding technology can achieve high-precision measurement of bathymetry in shallow waters, and the accuracy can meet the requirements of relevant sounding specifications under reasonable wind and waves conditions. USV has broad application prospects in bathymetry and seabed topography survey in shallow waters.