Visibility Analysis of Glaciers on Steep Slopes in the European ALPS Using Terrasar-X/PAZ Data
- Resource Type
- Conference
- Authors
- Kaushik, Suvat; Yan, Yajing; Ravanel, Ludovic; Magnin, Florence; Trouve, Emmanuel
- Source
- 2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS Geoscience and Remote Sensing Symposium IGARSS , 2021 IEEE International. :5505-5508 Jul, 2021
- Subject
- Aerospace
Geoscience
Photonics and Electrooptics
Signal Processing and Analysis
Analytical models
Satellites
Europe
Geoscience and remote sensing
Distortion
Orbits
Surface topography
Geometric distortions
SAR visibility
TerraSAR-X/PAZ
slope glaciers
Mont Blanc Massif
- Language
- ISSN
- 2153-7003
This paper focuses on the visibility of glacier surfaces in the Mont Blanc Massif (Western European Alps) on TerraSAR-X/PAZ images and the identification of geometric distortions (GDs) based on the SAR acquisition geometry. Small glaciers which exist in complex topographies like steep slopes are most prone to GDs. We built a visibility map for both ascending/descending orbits by utilizing previously documented algorithms like the R-Index (RI) and the Layover Shadow (LS) simulations, combined with an analysis of the angle between the steepest slope direction (SSD) and line of sight (LOS) vectors. The visibility map allows us to identify glaciers on steeper slopes which should be considered for further analysis using TerraSAR-X/PAZ images.