Advancing Sentinel-1 Insar Applications Using Esa’s Extended Timing Annotation Dataset Product
- Resource Type
- Conference
- Authors
- Sanchez, Victor Navarro; Gisinger, Christoph; Brcic, Ramon; Suchandt, Steffen; Krieger, Lukas; Fritz, Thomas; Valentino, Antonio; Pinheiro, Muriel
- Source
- IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2023 - 2023 IEEE International. :7878-7881 Jul, 2023
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Geoscience
Signal Processing and Analysis
Satellite constellations
Annotations
European Space Agency
Geoscience and remote sensing
Radar applications
Delays
Interferometry
ETAD
Sentinel-1
InSAR
troposphere
- Language
- ISSN
- 2153-7003
The Extended Timing Annotation Dataset (ETAD) product provides timing corrections for Sentinel-1 (S-1) single-look complex (SLC) data for improved geometric accuracy. Given the close relationship between path delay and radar signal phase, it also has the potential to serve as the basis for phase corrections in SAR interferometry (InSAR) applications with Sentinel-1. The provided timing corrections may be converted to phase offsets, which can be used to derive interferometric phase screens between pairs of repeat-pass acquisitions. In this work we explore the capabilities and limitations of ETAD to provide accurate interferometric phase corrections and introduce new features currently under investigation in the context of S1-ETAD scientific evolution study.