摘要
基于长江电子航道图系统,研究可航水域动态计算的数学模型及算法,使其能够根据用户指定的船舶吃水需求,结合实时或预测水位,计算并更新可航水深范围,以辅助船舶驾驶员确定可航水域并选择合理航线。该研究的关键在于,如何基于航道水深数据特征选取合适的水深数据动态插值算法、TIN模型生成算法、等深线追踪算法、等深线光滑算法等。最后,依托Arc GIS的二次开发功能和空间分析工具,完成电子航道图可航水域动态计算工具集的研制。
With the aid of CJENC system, we explore the dynamic calculation mathematical models and algorithms of the navigable waters, by which, we can calculate and update the navigable water scope and its dynamic centerline according to the user＇s specific demand on the water depth and combining with the real-time or predictive water levels, so as to assist the ship＇s pilotsto to confirm the navigable waters and select reasonable routes. The key points of the study are the selections of appropriate dynamic interpolation algorithm of depth data, TIN model generation algorithm, depth contour tracking algorithm, depth contour smoothing algorithm, etc. With the secondary development functions and various spatial analysis tools of ArcGIS, we finally implement the dynamic calculation toolset of navigable waters in CJENC.
出处
《水运工程》
北大核心
2016年第1期83-88,共6页
Port & Waterway Engineering
基金
交通运输部2013年信息化重大专项(2013-364-548-200)
