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遥感技术与应用  2016, Vol. 31 Issue (6): 1031-1036    DOI: 10.11873/j.issn.1004\|0323.2016.6.1031
微波遥感专栏     
HY-2高度计海况偏差非参数估计模型研究
苗洪利1,张国首1,王桂忠1,郭迎婷1,荆玉洁1,张 杰2
(1.中国海洋大学信息科学与工程学院,山东 青岛 266100;
2.国家海洋局第一海洋研究所,山东 青岛 266061)
Study on Nonparametric Estimations Model of the Sea State Bias for the HY-2 Altimeter
Miao Hongli1,Zhang Guoshou1,Wang Guizhong1,
(1.College of Information Science and Engineering,Ocean University of China,Qingdao 266100,China;
2.First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China)
 全文: PDF(1353 KB)  
摘要:

基于HY-2高度计数据,采用局部线性回归非参数估计方法,利用球谐核函数及局部可调带宽,对70和71周期的交叉点进行海况偏差非参数估计。依据解释方差、海况偏差与有效波高及风速的相关度和模型残差分析,检验评价模型。与相同数据集下的参数模型估计结果进行了分析比对,结果表明:所选定的非参数模型的海况偏差与有效波高和风速的相关度均处于较高水平,说明模型更为有效。在不同纬度段,非参数模型和参数模型各有所长,在北半球高纬度区域,非参数模型表现更优。

关键词: HY-2高度计海况偏差有效波高(SWH)风速非参数模型参数模型    
Abstract:

The nonparametric model of estimated the sea state bias with the local linear regression estimation,the spherical Epanechnikov kernel function and the local adjustable bandwidth is established based on HY-2 altimeter data.The performances of this model are evaluated by the explained variances,the correlations between the sea state bias and the significant wave height or wind speed and residuals.Compared with the estimations of parametric model under the same dataset,the results show that the correlations between the sea state bias of the nonparametric model in this paper and the significant wave height or wind speed are higher which means the model is more effective.The nonparametric model and the parametric model both have their own merits in different latitudes.The nonparametric model performs better in high-latitudes of the northern hemisphere.

Key words: HY-2 altimeter;Sea state bias;Significant wave height(SWH);Wind speed;Non\    parametric model;Parametric model
收稿日期: 2015-11-24 出版日期: 2016-12-30
:  TP 75  
基金资助:

国家自然科学基金项目“雷达高度计海况偏差校正综合模型研究”(41176157 ),国家自然科学基金青年基金项目“降雨条件下HY\|2高度计有效波高反演技术研究”(41406197 )。

作者简介: 苗洪利(1964-),男,山东青岛人,教授,主要从事海洋遥感方面的研究。Email:oumhl@ouc.edu.cn。
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引用本文:

苗洪利,张国首,王桂忠,郭迎婷,荆玉洁,张 杰. HY-2高度计海况偏差非参数估计模型研究[J]. 遥感技术与应用, 2016, 31(6): 1031-1036.

Miao Hongli,Zhang Guoshou,Wang Guizhong,. Study on Nonparametric Estimations Model of the Sea State Bias for the HY-2 Altimeter. Remote Sensing Technology and Application, 2016, 31(6): 1031-1036.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004\|0323.2016.6.1031        http://www.rsta.ac.cn/CN/Y2016/V31/I6/1031

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