基于模拟退火和区域划分的海表流场反演算法研究  

A study of ocean surface current inversion algorithm based on simulated annealing and region partition

作　　者：张夏荣 黄云仙[1] 严卫[1] 赵现斌[1] 

机构地区：[1]解放军理工大学气象海洋学院,江苏南京211101

出　　处：《海洋学报》2016年第7期14-21,共8页

基　　金：国家自然科学基金面上项目(41375029;41575028);国家自然科学基金青年基金项目(41505016);装备预研共用技术基金(9140A21070114JB25344)

摘　　要：经典的海洋表面流场迭代反演算法采用固定的校正系数对探测区域进行整体分析和计算,因此耗时较长且反演精度也受到了一定程度的限制。本文提出利用模拟退火算法对反演过程中的校正系数进行优化,使其能根据每一次反演的结果进行自适应的调整和改变,从而减少迭代次数;同时根据流场分布的特点,提出划分探测区域的反演方法,最终,在经典算法的基础上给出了改进的海表流场反演算法。仿真反演实验结果表明,改进后的反演算法,其时效性和精度都有了明显提高。The classical ocean surface current iterative inversion algorithm used constant correction factor to analyze and calculate the whole detection area, so it is time-consuming and the accuracy is limited. In order to improve the efficiency and accuracy of the inversion calculation, this paper used simulated annealing algorithm to optimize the correction coefficient, which can be adaptively changed according to the result of each inversion. Moreover, detec- tion region was divided according to the characteristics of the current distribution. Finally, a modified ocean surface current inversion algorithm is proposed based on the classical method. The simulation results show that the effi- ciency and accuracy of the improved inversion algorithm are obviously improved.

关 键 词：顺轨干涉SAR 海洋表面流场 M4S模型 模拟退火算法 

分 类 号：P731.21[天文地球—海洋科学]