Abstract
In this study, we compare the different spectral centering methods (referred to as deramping) for the Sentinel-1 images acquired with the TOPSAR method, in the context of interferometry. The deramping is a necessary step prior to image interpolation. We show the analogy between two different approaches in the literature and propose our own improvements. The proposed deramping method approximately re-centers the spectrum, i.e. a small residual spectral shift remains. We validate our improvements with experiments on Sentinel-1 data, and show that interpolating the images containing this residual spectral shift should not induce considerable errors.
| Original language | English |
|---|---|
| Title of host publication | IGARSS 2021: 2021 IEEE International Geoscience and Remote Sensing Symposium, Proceedings |
| Publisher | IEEE |
| Pages | 3372-3375 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781665403696 |
| ISBN (Print) | 9781665447621 |
| DOIs | |
| Publication status | Published - 2021 |
| Externally published | Yes |
| Event | 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021 - Brussels, Belgium Duration: 12 Jul 2021 → 16 Jul 2021 |
Publication series
| Name | International Geoscience and Remote Sensing Symposium (IGARSS) |
|---|---|
| Volume | 2021-July |
Conference
| Conference | 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021 |
|---|---|
| Country/Territory | Belgium |
| City | Brussels |
| Period | 12/07/21 → 16/07/21 |
Bibliographical note
Publisher Copyright:© 2021 IEEE.
Funding
Work partly financed by IDEX Paris-Saclay IDI 2016, ANR-11-IDEX-0003-02, Office of Naval research grant N00014-17-1-2552 and N00014-20-S-B001, DGA Astrid project « filmer la Terre» n° ANR-17-ASTR-0013-01, MENRT, and by a grant from ANRT.
Keywords
- Demodulation
- Deramping
- Sentinel-1
- Spectral centering
- TOPSAR