摘要
系统分析了现有格网数字水深模型(GRID_DDM)插值数学模型的优劣,针对高精度、高密度多波束测深数据,采用不同的建模方法进行GRID_DDM构建,定量评估相关插值方法的精度与效率。实验表明,剖分插值和自然邻点插值方法构建的GRID_DDM精度较高,且效率可被接受,是多波束测深数据GRID_DDM构建的优选方法。
This paper systematically analyzed the mathematic interpolation models of GRID digital depth model(GRID_DDM), and quantitatively estimated the precision and efficiency of relative interpolation methods by applying different modeling methods in constructing GRID_DDM based on multi-beam bathymetric data. The experiments show that the subdivision interpolation and nature neighbor interpolation(NNI) methods are characterized by high precision, and the efficiency is also acceptable, which are the preference methods for GRID_DDM modeling based on multi-beam bathymetric data.
出处
《地理空间信息》
2017年第12期85-88,共4页
Geospatial Information
基金
国家自然科学基金资助项目(41601498)
