无人机LiDAR系统在砂质海岸监测中的应用

Application of UAV LiDAR system in sandy coast monitoring

本研究基于海岸动态变化的研究现状和传统监测模式,提出了借助无人机搭载LiDAR系统的监测方法,阐述了其基本原理和监测流程,并以海阳万米沙滩海岸为例,获取了海岸带区域DEM,从固定地面特征点和岸滩剖面两个方面进行了精度验证。结果表明:该方法可适用于时间窗口较短的海岸侵蚀监测,其精度能够满足海岸动态变化监测的需求,可在海岸监测中推广普及应用。

In this study,a new monitoring method was proposed based on the UAV LiDAR system,in conjunction with the coast dynamic changes and traditional monitoring modes.The basic principles and processes of the monitoring methods were analyzed and described,and we set the Ten-thousand-meters sandy beach in Haiyang as the research area to test them.For fulfilling the requirement of the monitoring method,we obtained the DEM data of the coastal zone and also verified the accuracies of the monitoring by the ground characteristic points and beach topographic profiles.The monitoring results indicate that(1) this method suits well for the coastal erosion monitoring over short-term window,and(2) it owns enough high accuracies for the monitoring of coastal dynamic variations.We anticipate that this method can be widely applied in coastal monitoring.