基于无人机摄影测量的潮间带单波束测深空间插值精度评估  

Evaluation of intertidal single-beam bathymetric spatial interpolation accuracy based on UAV photogrammetry

作　　者：马海波 来向华 胡涛骏 傅晓明 MA Haibo;LAI Xianghua;HU Taojun;FU Xiaoming(Second Institute of Oceanography,MNR,Hangzhou 310012,China;Key Laboratory of Nearshore Engineering Environment and Ecological Security of Zhejiang Province,Hangzhou 310012,China)

机构地区：[1]自然资源部第二海洋研究所,浙江杭州310012 [2]浙江省近海海洋工程环境与生态安全重点实验室,浙江杭州310012

出　　处：《海洋学研究》2024年第1期83-90,共8页Journal of Marine Sciences

基　　金：国家自然科学基金项目(52071289)。

摘　　要：针对单波束测深数据插值模型精度验证困难等问题,利用潮间带潮汐规律,提出了一种基于高精度无人机数据验证插值模型精度的方法。在低潮时利用无人机摄影测量构建高精度潮间带数字表面模型,高潮时获取单波束测深数据并结合全球导航卫星系统技术计算得出潮间带地形点的三维坐标,使用克里金插值法、反距离权重法、规则样条函数法以及自然邻域法分别构建潮间带数字高程模型。以无人机数字表面模型数据为基准,分别对4种插值方法构建的潮间带数字高程模型进行精度分析。结果表明:1)后处理差分技术辅助无人机摄影测量可以构建高精度潮间带数字表面模型。2)在潮间带区域可以使用无人机数据作为单波束测深数据精度的评价标准。3)潮间带地形较为平坦时,规则样条函数法相比于其他3种插值方法精度更高,粗差率为12.5%。Aiming at the problems of difficulty in verifying the accuracy of the interpolation model of single-beam bathymetric data,a method based on high-precision UAV data to verify the accuracy of the interpolation model was proposed by using the intertidal tidal law.At low tide,UAV photogrammetry was used to construct a high-precision digital surface model(DSM)of the intertidal zone,and at high tide,the single-beam bathymetry data was obtained and the three-dimensional coordinates of the intertidal topographic points were calculated by combining the global navigation satellite system(GNSS)technology,and constructed an intertidal digital elevation model(DEM)by using the following 4 interpolation methods:Kriging,inverse distance weight,completely regularized spline and natural neighborhood interpolation method.Based on UAV data,the accuracy analysis of intertidal zone DEM was carried out.The results show that:(1)PPK technology-assisted UAV photogrammetry can construct high-precision intertidal zone DSM.(2)In the intertidal zone,UAV data can be used as an evaluation criterion for the accuracy of single-beam bathymetry data.(3)When the seabed topography is relatively flat,the completely regularized spline method has higher accuracy than the other three methods,and the coarse difference rate is 12.5%.

关 键 词：单波束测深 规则样条函数法 克里金插值法 无人机 潮间带 PPK 

分 类 号：P229[天文地球—大地测量学与测量工程]