摘要
水深注记的密度是反映航海图水深表示合理性的一个重要指标。通过水深三角网的构建和水深间隔的计算,提出了水深密度的定量计算方法,并选取多幅航海图对其水深密度的符合性进行相应的统计分析。实验结果表明:所提方法可以定量计算分析航海图水深密度及其基本间距的符合性,《中国航海图编绘规范》水深间距要求的基本间距的1.5倍可作为水深自动选取时"可适当"加密、减稀的具体数值。
The sounding density is an important index to describe the rationality of sounding expression of the nautical charts. Through the construction of triangle net and the computation of the sounding distance, a quantitative calculation method is possessed, and the coincidence of sounding density of selected nautical charts is counted and analyzed. The experimental results demonstrate ： the proposed method can compute and analyze coincidence of the sounding density and the basic distance ; 1.5 times basic distance can be the numerical value of wmay be appropriatewhen sounding is selected automatically.
出处
《海洋测绘》
CSCD
2017年第5期68-70,75,共4页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41471380)
关键词
制图综合
水深密度
符合率
基本间距
可变间距
generalization
sounding density
coincidence rate
basic distance
variable distance
