联合ERS-1和ICESAT卫星测高数据构建南极冰盖DEM  

ANTARCTIC DIGITAL ELEVATION MODEL FROM ERS-1 AND ICESAT DATA

作　　者：王泽民[1] 熊云琪[1] 杨元德[1] 鄂栋臣[1] 

机构地区：[1]武汉大学中国南极测绘研究中心,湖北武汉430079

出　　处：《极地研究》2013年第3期211-217,共7页Chinese Journal of Polar Research

基　　金：国家高技术研究发展计划(863计划)重大项目(2012AA12A304-20);国家海洋局极地专项"南北极环境综合考察与评估";国家自然科学基金(41174029;41106163);国家海洋局极地科学重点实验室开放研究基金(KP201102);武汉大学中央高校基本科研业务经费专项资金项目(111165)资助

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。Digital Elevation Models （DEMs） of the 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 here is to obtain high resolution and high accuracy through a combination of these two types of data. This paper presents an approach to such a combination, which was used to construct an Antarctic DEM. Finally, ICESAT discrete data and RAMP/ DEM v2 were used to evaluate accuracy of the integrated DEM. Results show that elevation accuracy of the integrat- ed DEM is about 4 m.

关 键 词：南极冰盖DEM ERS-1 ICESAT RAMP DEM 

分 类 号：P228[天文地球—大地测量学与测量工程] P941.61[天文地球—测绘科学与技术] P343.6