极地研究 ›› 2013, Vol. 25 ›› Issue (3): 211-217.DOI: 10.3724/SP.J.2013.00211

• 研究论文 •    下一篇

联合ERS-1和ICESAT卫星测高数据构建南极冰盖DEM

王泽民  熊云琪  杨元德 鄂栋臣   

  1. 武汉大学中国南极测绘研究中心,湖北 武汉 430079
  • 收稿日期:2012-10-15 修回日期:2013-01-02 出版日期:2013-09-30 发布日期:2013-09-30
  • 通讯作者: 王泽民
  • 基金资助:

    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

ANTARCTIC DEM FROM ERS-1 AND ICESAT DATA

Wang Zemin,Xiong Yunqi,Yang Yuande,E Dongchen   

  1. Chinese Antarctic Center of Surveying and Mapping, Wuhan University,Wuhan 430079,China
  • Received:2012-10-15 Revised:2013-01-02 Online:2013-09-30 Published:2013-09-30
  • Contact: Wang Zemin

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。

关键词: 南极冰盖DEM, ERS-1, ICESAT, RAMP/DEM

Abstract: Digital Elevation Models (DEMs) of Antarctic ice sheet play a very important role in Antarctic research, and the main data source for constructing an Antarctic 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.  

Key words: Antarctic ice sheet, DEM, ERS-1, ICESAT, RAMP/DEM