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通过对北冰洋海冰穿透雷达的探测与分析,讨论了雷达电磁波探测海冰厚度和海冰下表面形态特征的能力.结果表明,雷达波可穿透超过6m厚度的北极盛夏海冰,雷达波在海冰内的传播速度是0.142-0.154 m/ns.雷达图像表现出海冰下表面粗糙起伏的微形态特征,这种微形态特征与海冰类型关系紧密,反映出雷达探测有助于识别和划分海冰类型.基于雷达图像同时显示海冰上、下界线的特点,统计分析了二者界线实际长度的差异,提出一个新的长度因子数值概念,可用于海冰上、下表面面积差异的研究.
Through the detection and analysis of Arctic sea ice penetrating radar, the ability of radar electromagnetic wave to detect the sea ice thickness and surface morphology under sea ice is discussed. The results show that the radar wave can penetrate Arctic summer sea ice over 6m thick, The propagation velocity in sea ice is 0.142-0.154 m / ns. The radar image shows the micro-morphological features of the rough surface under sea ice. The micro-morphological characteristics are closely related to the sea ice type, which shows that radar detection can help identify and Based on the characteristics of sea ice at the same time and the lower boundary of sea ice, statistical analysis of the difference between the actual length of the two boundaries, a new concept of length factor numerical value can be used for the study of the sea surface ice under the surface area difference .