一种大陆坡脚点自动识别与综合判断方法  

An Intergrated Method for Automatic Identification of the Foot Point of Slope

作　　者：吴自银[1,2] 李家彪[1,2] 阳凡林[3,4] 尚继宏[1,2] 李守军[1,2] 金肖兵[1,2] 

机构地区：[1]国家海洋局第二海洋研究所,浙江杭州310012 [2]国家海洋局海底科学重点实验室,浙江杭州310012 [3]山东科技大学测绘科学与工程学院,山东青岛266590 [4]海岛(礁)测绘技术国家测绘地理信息局重点实验室,山东青岛266590

出　　处：《测绘学报》2014年第2期170-177,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学重点基金(40506017);海洋公益项目(201105001);科技基础性工作专项(2013FY112900)

摘　　要：为提升自主能力,更好地维护我国海洋权益,进行了200海里以外大陆架划界的核心界限点——大陆坡脚点(FOS)的自动识别方法与算法研究。提出基于二阶导数极值点和D-P算法的二次简化方法,以及原始剖面和D-P剖面的二次求导方法,并给出数据点坡度、水深和二阶导数,以及曲线凹凸性、连续性和分段性等多重FOS识别方法,通过对地形、坡度、二阶导数及D-P剖面的综合分析,最终实现了FOS的自动识别。进行了该方法的底层初步开发,并采用多波束实测水深数据对其进行了有效性验证。The foot point of slope （FOS） is the core limits of the continental shelf beyond 200 nautical miles. Methodological and algorithmic research for the identification of the foot point of slope is discussed to improve our independent abilities and maintain our national maritime rights. A quadratic simplified method based on the D-P algorithm and extreme points of second derivation is proposed and a quadratic derivative method to the original profiles and D-P profiles is suggested for the first time. Multiple identification methods for FOS are brought forward based on gradient, depth, second derivative of terrain, Concave, convex, continuity and segmentations of profiles, By analyzing the terrain, slope, second derivation and D-P profiles synthetically, the identification of FOS is automatically realized finally. The underlying program is developed preliminarily and the validity of the method is Proved bv measured multi-beam bathymetric data.

关 键 词：大陆坡脚点 D-P算法 二次拟合 二次求导 自动识别 

分 类 号：P229[天文地球—大地测量学与测量工程]