利用Cryosat-2 SAR模式数据确定北冰洋海平面模型  

Arctic Sea Surface Model Derived from Cryosat-2 SAR Mode Data

作　　者：陈国栋 陈钰 金涛勇[3] 张志杰 李黎 CHEN Guodong;CHEN Yu;JIN Taoyong;ZHANG Zhijie;LI Li(School of Geography Science and Geomatics Engineering,Suzhou University of Science and Technology,99 Xuefu Road,Suzhou 215009,China;School of Marine Technology and Geomatics,Jiangsu Ocean University,59 Cangwu Road,Lianyungang 222005,China;School of Geodesy and Geometics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)

机构地区：[1]苏州科技大学地理科学与测绘工程学院,苏州市215009 [2]江苏海洋大学海洋技术与测绘学院,江苏省连云港市222005 [3]武汉大学测绘学院,武汉市430079

出　　处：《大地测量与地球动力学》2023年第6期606-611,621,共7页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(42192531)。

摘　　要：围绕Cryosat-2卫星SAR模式测高数据处理方法展开研究,利用决策树算法确定冰间水道观测值提取的参数和阈值,进而建立北冰洋海冰覆盖海域的海平面模型UST-CS2。结果表明,UST-CS2与DTU21海平面模型具有较高的一致性。ICESat-2激光测高数据的验证结果表明,UST-CS2的标准差为10.72 cm,与DTU21等模型精度基本持平,证明该模型具有可靠性。We study the data processing of Cryosat-2 SAR mode altimetry data in Arctic ocean.We use a decision tree algorithm to determine the parameters and thresholds for the detection of the open lead observations,and then establish a mean sea level model in the ice-covered region of Arctic ocean named UST-CS2.The results show that UST-CS2 has best consistency with DTU21 model,while the validation results of ICESat-2 laser altimetry data show a standard deviation of 10.72 cm,which is close to the results of DTU21.These results indicate that the UST-CS2 is reliable.

关 键 词：Cryosat-2 北冰洋 海平面 海冰 卫星测高 

分 类 号：P223[天文地球—大地测量学与测量工程] P228[天文地球—测绘科学与技术]