利用卫星遥感SST估算海表流场  

METHODS OF OBTAINING SEA SURFACE VELOCITIES FIELD FROM SST IMAGES

作　　者：毛志华[1] 潘德炉[1] 潘玉球[1] 

机构地区：[1]国家海洋局第二海洋研究所,杭州310012

出　　处：《海洋通报》1996年第1期84-90,共7页Marine Science Bulletin

基　　金：中德合作项目

摘　　要：介绍了利用遥感资料得到的海表温度(SST)图估算海表流场的最大相关系数法和相关松弛法.比较二种方法在不同参数条件下的矢量图,相关松弛法明显地优于最大相关系数法.在用相关松弛法时,模板大小和搜索距离这二个参数对计算结果影响很大,选择16×16像元数的模板和15像元数的搜索距离计算1989年12月3日～12月6日台湾海峡这一组资料时比较理想,结果表明用相关松弛法计算海表流场有一定的可靠性和实用性.Two methods of Maximum-Cross-Correlation (MCC) and Correlation-Relaxation (CR) are introduced in computing sea surface velocities fields from sequential SST images. Results of the two methods are compared and CR method is much improved. Using CR method, the results vary largely with the different parameter values, especially that of pattern and search tile sizes. Based on careful examination and comparision, it is concluded that the parameters of 16 × 16 pixel pattern and 15 pixel search range are the best choice in using the data between 3rd and 6th of Dcember 1989 in Taiwan Strait.

关 键 词：海表温度图 海表流场 相关松弛法 卫星遥感 海流 

分 类 号：P731.21[天文地球—海洋科学]