Improving InSAR elevation models in Antarctica using laser altimetry, accounting for ice motion, orbital errors and atmospheric delays》.pdf

Remote Sensing of Environment 162 (2015) 112–118 Contents lists available at ScienceDirect Remote Sensing of Environment journal h omepage: /locate/rse Improving InSAR elevation models in Antarctica using laser altimetry, accounting for ice motion, orbital errors and atmospheric delays Yu Zhou a,1, Chunxia Zhou a,⁎, Fanghui Deng a, Dongchen E a, Haiyan Liu b, Yangmao Wen c a Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China b School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China c School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China a r t i c l e i n f o a b s t r a c t Article history: Ice dynamics is closely related to climate change. However, a lack of digital elevation models (DEMs) of sufficient Received 15 October 2014 horizontal resolution and vertical precision has been a major issue in dynamic studies for years. Existing Antarctic Received in revised form 19 January 2015 DEMs are derived from satellite radar and laser altimetry as well as limited terrestrial data; these sparse datasets Accepted 21 January 2015 result in poor spatial resolution (hundreds of metres to 1 km). In this paper, we propose a method for generating Available online 6 March 2015 high-accuracy and high-resolution DEMs using interferometric synthetic aperture radar (InSAR) and Ice, Cloud and land Elevation Satellite (ICESat) laser altimetry by reduc