TY - JOUR
T1 - A Fully-Focused SAR Omega-K Closed-Form Algorithm for the Sentinel-6 Radar Altimeter
T2 - Methodology and Applications
AU - Hernandez-Burgos, Sergi
AU - Gibert, Ferran
AU - Broquetas, Antoni
AU - Kleinherenbrink, Marcel
AU - De la Cruz, Adrian Flores
AU - Gomez-Olive, Adria
AU - Garcia-Mondejar, Albert
AU - Aparici, Monica Roca i.
PY - 2024
Y1 - 2024
N2 - The 2-D frequency-based omega-K method is known to be a suitable algorithm for fully focused SAR (FF-SAR) radar altimeter processors, as its computational efficiency is much higher than equivalent time-based alternatives without much performance degradation. In this article, we provide a closed-form description of a 2-D frequency-domain omega-K algorithm specific for instruments such as Poseidon-4 onboard Sentinel-6. The processor is validated with real data from point targets and over the open ocean. Applications such as ocean swell retrieval and lead detection are demonstrated, showing the potentiality of the processor for future operational global-scale products.
AB - The 2-D frequency-based omega-K method is known to be a suitable algorithm for fully focused SAR (FF-SAR) radar altimeter processors, as its computational efficiency is much higher than equivalent time-based alternatives without much performance degradation. In this article, we provide a closed-form description of a 2-D frequency-domain omega-K algorithm specific for instruments such as Poseidon-4 onboard Sentinel-6. The processor is validated with real data from point targets and over the open ocean. Applications such as ocean swell retrieval and lead detection are demonstrated, showing the potentiality of the processor for future operational global-scale products.
KW - Altimetry
KW - delay/Doppler altimetry
KW - Earth
KW - Fully-Focused SAR
KW - omega-K
KW - Program processors
KW - Radar antennas
KW - SAR altimetry
KW - Satellites
KW - Spaceborne radar
KW - Synthetic aperture radar
KW - synthetic aperture radar (SAR)
UR - http://www.scopus.com/inward/record.url?scp=85186093674&partnerID=8YFLogxK
U2 - 10.1109/TGRS.2024.3367544
DO - 10.1109/TGRS.2024.3367544
M3 - Article
AN - SCOPUS:85186093674
SN - 0196-2892
VL - 62
SP - 1
EP - 16
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
M1 - 5206016
ER -