Generation of a Digital Elevation Model Using Capella High-Resolution SAR Data: First Results Over La Palma Island
- Resource Type
- Conference
- Authors
- Paloma, Riccardo; Monserrat, Oriol; Crippa, Bruno; Crosetto, Michele; Bru, Guadalupe; Ezquerro, Pablo; Bejar-Pizarro, Marta
- Source
- IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2022 - 2022 IEEE International. :3472-3475 Jul, 2022
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Power, Energy and Industry Applications
Signal Processing and Analysis
Laser radar
Image resolution
Spaceborne radar
Geoscience and remote sensing
Spatial filters
Radar polarimetry
Iterative algorithms
digital elevation model
radargrammetry
high-resolution SAR imagery
volcano monitoring
- Language
- ISSN
- 2153-7003
Generation of Digital Elevation Models (DEMs) using Synthetic Aperture Radar (SAR) data is a valid flexible alternative to other surveying techniques. In this work we adopt radargrammetry on two SAR images recorded by the Capella Space X-band spaceborne sensor on two consecutive days over La Palma Island (Canary Islands, Spain) during the Cumbre Vieja volcanic eruption, with the aim of investigating the potential of these high-resolution (up to 0.7 by 0.5 m 2 ) SAR images in generating precise DEMs. The adopted method employs a multilook-based spatial filter followed by an iterative region-growing algorithm to identify matching pixels between the two images. The resultant radargrammetric DEM is compared with a Lidar-based DEM, showing a good agreement in the areas less affected by lava flow.