一种纸质航海图水深注记表示的新方法

A New Sounding Annotation Representation Method for Paper Nautical Charts

针对由多波束测深手段和由单波束测深及其他传统测深手段获得的水深数据长期并存这一实际,在分析现行的纸质航海图水深注记表示方法存在不足的基础上,提出一种基于字符颜色扩展的海图水深注记表示新方法,即以绿色水深注记表示由多波束测深手段获得的水深数据,黑色水深注记表示由单波束测深及其他传统测深手段获得的水深数据。初步分析表明,这是一种简单、易行的方法,可在纸质航海图上有效实现对两类不同来源、具有显著质量差别的水深数据的表示,能更好地满足航海人员通过纸质航海图上的水深注记直观、准确地认知、重建和利用海底地形信息的需要。

For sounding data acquired in multibeam bathymetric surveys and other traditional bathymetric surveys （such as singlebeam bathymetric surveys） will chronically coexist,after having analysed the deficiency of current sounding annotation representation of paper nautical charts,the paper has advanced a new sounding annotation representation method based on character color extension,namely,sounding data acquired in multibeam bathymetric surveys is represented in green,sounding data acquired in singlebeam and other traditional bathymetric surveys is represented in black.Primary analysis shows that the new sounding annotation representation method is simple and easy to handle,which efficiently represents the two different sounding data sources of remarkable quality contrast,and rather suitable for voyagers＇ requirement for cognizing,rebuilding and utilizing submarine terrain information through sounding annotation on paper nautical charts intuitively and precisely.