GLACIAL SURFACE TOPOGRAPHY AND ITS CHANGES IN THE WESTERN QILIAN MOUNTAINS DERIVED FROM TANDEM-X BI-STATIC INSAR

摘要

The high-resolution and high-precision glacier surface topography is one of the most important fundamental data for the research of glacial dynamic process of mountain glaciers. It is noteworthy that the TanDEM-X mission, launched in 2010 by the German Aerospace Center (DLR), opens a new era in single-pass satellite SAR remote sensing [1]. The TanDEM-X (TDX) mission employs a bi-static interferometric configuration of the two identical satellites TerraSAR-X (TSX) and TDX flying in a closely controlled formation, the primary objective of which is to generate a global, high-accurate, and homogeneous DEM following the high standard accuracy HRTI-3 [1].