| 与岸线协调的水深自动选取方法 |
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| 引用本文： | 贾帅东,曹鸿博,占祥生.与岸线协调的水深自动选取方法[J].海洋测绘,2018(3):48-51. |
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| 作者姓名： | 贾帅东 曹鸿博 占祥生 |
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| 作者单位： | 海军大连舰艇学院海洋测绘系;海洋测绘工程军队重点实验室;海军出版社;91650部队 |
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| 基金项目： | 国家自然科学基金(41471380,41601498) |
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| 摘 要： | 针对当前水深自动选取中水深点与岸线的协调匹配问题,提出了一种与岸线协调的水深自动选取方法。通过分析资料水深点与岸线的平面位置关系,提取出与岸线协调的待选水深点;从航海安全角度考虑,优先选取浅水深点;在此基础上,分别定义水深点与岸线弯曲处、平直处的协调度,并建立协调度评估模型;通过定量计算协调度,选取出与岸线协调匹配的水深点。实验结果表明,所提方法能在岸线弯曲处优先选取出协调的水深点,同时能保证在岸线平直处附近所选取的水深点分布合理;所提方法能够较好地考虑水深点与岸线的图上位置关系,避免水深注记中断岸线、水深注记"上陆"的情况出现。
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| 关 键 词： | 制图综合 水深自动选取 岸线 海图 协调度 |
A Method of Automatic Sounding Selection Harmonizing with a Shoreline |
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| JIA Shuaidong,CAO Hongbo,ZHAN Xiangsheng.A Method of Automatic Sounding Selection Harmonizing with a Shoreline[J].Hydrographic Surveying and Charting,2018(3):48-51. |
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| Authors: | JIA Shuaidong CAO Hongbo ZHAN Xiangsheng |
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| Abstract: | Aiming at the drawbacks of current automatic sounding selections not harmonizing with a shoreline,a method of automatic sounding selection harmonizing with a shoreline is proposed.Firstly,the alternative soundings harmonizing with a shoreline are extracted by analyzing the position relation between soudnings and a shoreline.Secondly,the shoal soundings have priority to be selected considering the navigational safety.Thirdly,the degree of a sounding harmonizing with a shoreline is defined,and the estimation model is constructed.Finally,the degree of a sounding harmonizing with a local range of a shoreline is calculated respectively when a shore line is smooth or scraggy,then the optimal soundings are selected automatically.The experimental results show that:the soundings can be selected for harmonizing with a shoreline being scraggy,and the soundings are distributed suitably near a shorline being smooth;the soundings,breaking off a shoreline or appearing inside lands can be avoided. |
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