| 太湖水下平均余弦计算模型研究 |
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| 引用本文： | 黄昌春,李云梅,孙德勇,乐成峰.太湖水下平均余弦计算模型研究[J].海洋湖沼通报,2009(1). |
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| 作者姓名： | 黄昌春 李云梅 孙德勇 乐成峰 |
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| 作者单位： | 南京师范大学虚拟地理环境教育部重点实验室,南京,210046 |
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| 摘 要： | 基于太湖实测散射系数数据估算水下平均散射次数,结合Hydrolight软件模拟水下平均余弦,对二者的相关关系进行分析;根据单个样点、各个水层求算的水下平均余弦经验模型,确定水下平均余弦估算的最佳模式为二次方程,利用二次方程的二次项、一次项和常数项系数与平均散射次数的高度相关性,建立了利用平均散射次数估算二次方程系数的模型,从而建立了利用平均散射次数计算水下平均余弦的经验模型.模型检验表明:0.6m深度平均误差不高于1.712%,0.9m深度平均误差不高于1.982%,1.2m深度平均误差不高于2.05%,1.5m深度平均误差不高于4.22%,4个深度总的平均误差不高于2.491%.
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| 关 键 词： | 水下平均余弦 平均散射次数 太湖 计算模型 |
RESEARCH OF UNDERWATER MEAN COSINE CALCULATING MODEL IN TAIHU LAKE |
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| HUANG Changehun,LI Yunmei,SUN Deyong,LE Chengfeng.RESEARCH OF UNDERWATER MEAN COSINE CALCULATING MODEL IN TAIHU LAKE[J].Transaction of Oceanology and Limnology,2009(1). |
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| Authors: | HUANG Changehun LI Yunmei SUN Deyong LE Chengfeng |
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| Institution: | Key Laboratory of Virtual Geographic Environment;Ministry of Education;Nanjing Normal University;Nanjing 210046;China |
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| Abstract: | Base on the average scattering times that calculate through the measured data and the mean cosine value from the HYDROLIGHT simulation,the correlativity between them was analyzed;Secondly,the mean cosine calculation model at each depth of single example point was sought,and the best confirmed model for estimating the mean cosine is the quadratic equation.Ulteriorly,utilizing the high correlation between the average scattering times and the quadratic equation coefficient to build the model that using the ave... |
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| Keywords: | underwater mean cosine average scattering times Taihu Lake calculating model |
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