| 联合ERS-1和ICESAT卫星测高数据构建南极冰盖DEM |
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| 引用本文： | 王泽民,熊云琪,杨元德 鄂栋臣.联合ERS-1和ICESAT卫星测高数据构建南极冰盖DEM[J].极地研究,2013,25(3):211-217. |
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| 作者姓名： | 王泽民 熊云琪 杨元德 鄂栋臣 |
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| 作者单位： | 武汉大学中国南极测绘研究中心，湖北 武汉 430079 |
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| 基金项目： | 国家自然科学基金“行星冲击产生的高温高压相变反应：月球火星陨石中后成合晶的研究”;国家海洋局极地科学重点实验室开放研究基金;武汉大学中央高校基本科研业务费专项资金科研项目 |
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| 摘 要： | 南极冰盖DEM在南极研究中具有十分重要的作用，而构建南极冰盖DEM的主要数据源来自于卫星测高。在已有的测高卫星数据中，ERS-1/GM和ICESAT在空间分辨率和精度方面存在互补的关系，综合利用这两类数据，是获得南极冰盖高分辨率高精度DEM的前提。本文采用了数据联合的方法，利用ERS-1和ICESAT测高数据来构建南极冰盖DEM。采用ICESAT离散数据和RAMP/DEM v2对综合DEM进行精度评估，结果表明综合DEM高程精度在4 m左右。
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| 收稿时间： | 2012-10-15 |
ANTARCTIC DEM FROM ERS-1 AND ICESAT DATA |
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| Wang Zemin,Xiong Yunqi,Yang Yuande,E Dongchen.ANTARCTIC DEM FROM ERS-1 AND ICESAT DATA[J].Chinese Journal of Polar Research,2013,25(3):211-217. |
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| Authors: | Wang Zemin Xiong Yunqi Yang Yuande E Dongchen |
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| Institution: | Chinese Antarctic Center of Surveying and Mapping, Wuhan University，Wuhan 430079，China |
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| Abstract: | Digital Elevation Models (DEMs) of Antarctic ice sheet play a very important role in Antarctic research, and the main data source for constructing anAntarctic DEM is satellite altimetry.Among these data, ERS-1/GM has a complementary relationship with ICESAT in spatial resolution and accuracy, and the premise to obtain high resolution and high accuracy is a combination of these two types of data. The article found an approach to combine the data, which was used to construct the Antarctic DEM. Finally, ICESAT discrete data and RAMP / DEM v2 was used to evaluate the accuracy of the integrated DEM, and the results show that the elevation accuracy of integrated DEM is about 4m. |
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| Keywords: | Antarctic ice sheet DEM ERS-1 ICESAT RAMP/DEM |
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