极地研究Issue(1)：83-90,8.DOI:10.13679/j.jdyj.2015.1.083
基于光学立体和 InSAR 的 Grove 山地区DEM 建立和分析
GENERATION AND COMPARISON OF ASTER DEM AND INSAR DEM OF THE GROVE MOUNTAINS AREA
摘要
Abstract
A 15-m ASTER Digital Elevation Model ( DEM) of the Grove Mountains area which is located at 72°45′S, 75°00′E was generated by optical stereo technique and an InSAR DEM with resolution of 20 m was derived.ICESat data were introduced in the process of the ASTER DEM construction, and utilized to correct the InSAR DEM.ICE-Sat footprints were used as elevation control points during the ASTER DEM generation to reduce mismatching points.Finally, the vertical accuracy of the DEM was improved.The InSAR DEM was corrected using the quadrat-ic polynomial with ICESat footprints as control points.And this correction has been designed to eliminate errors in-troduced by inaccurate estimations of the baseline.The accuracies of the ASTER and InSAR DEMs were evaluated using another set of ICESat data and the major error sources were discussed.Furthermore, the two DEMs were com-pared and analyzed.The specific advantages and disadvantages of these two techniques in DEM construction of the ice sheet in Antarctica were elaborated, and the advantages of both DEMs were combined to generate a high-accura-cy DEM of the Grove Mountains area.关键词
ASTER/InSAR/数字高程模型(DEM)/Grove山Key words
ASTER/InSAR/DEM/Grove Mountains引用本文复制引用
万雷,周春霞,鄂栋臣..基于光学立体和 InSAR 的 Grove 山地区DEM 建立和分析[J].极地研究,2015,(1):83-90,8.基金项目
国家自然科学基金（41076126，41376187）、南北极环境综合考察与评估专项（CHINARE2013-02-04）、民用航天“十二五”预先研究项目（D040103）和中国极地科学战略研究基金（20120107）资助 （）
