Comparison of Greenland ice sheet topography measured by TOPSAR and airborne laser altimetry

被引：9

作者：

Bindschadler, R ^{[1
]}

Fahnestock, M

Sigmund, A

机构：

[1] NASA, Goddard Space Flight Ctr, Lab Hydrospher Proc, Oceans & Ice Branch, Greenbelt, MD 20771 USA

[2] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 USA

[3] Gen Sci Corp, Laurel, MD 20727 USA

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 1999年 / 37卷 / 05期

基金：

美国国家航空航天局;

关键词：

ice sheets; topography; synthetic aperture radar (SAR);

D O I：

10.1109/36.789648

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

A digital elevation model (DEM) produced from airborne interferometric synthetic aperture radar (TOPSAR) data of a 5 km x 65 km region of the Greenland Ice Sheet is compared with multiple airborne laser altimeter profiles of the same surface TOPSAR-derived elevation values were calculated on a 10 m x 10 m grid, Surface topography at wavelengths greater than one kilometer is accurately reproduced. A planar adjustment of -8 m with along-track and cross-track tilts of 0.17 and 2.4 m/km, respectively, is required to match the two elevation data sets, Residual noise of the TOPSAR data at subkilometer wavelengths is less than two meters, This study underscores the need for independent elevation data for controlling TOPSAR elevation surveys.

引用

页码：2530 / 2535

页数：6

共 12 条

[1] TRANSFER OF BASAL SLIDING VARIATIONS TO THE SURFACE OF A LINEARLY VISCOUS GLACIER [J].