海底数字地形模型的空间不确定性分析

摘要

分析了格网海底数字地形模型(DTM)对真实海底表达所带来的精度损失,提出了海底DTM的"浅点扩展"原则.试验证明,"浅点扩展"原则能够较好地保证DTM对海底浅点的表达,提高对海底真实地形的表达精度.%The precision loss of grid submarine digital terrain model to real marine topography is discussed,a new “shallow extend” principle of submarine DTM is put forward. It' s proved that this principle can ensure the expression of submarine shallow preferably and improve the precision.