COSMO-SkyMed Seconda Generazione: spotlight focusing chain improvements and interferometric and change detection capabilities enhancement through common band filtering
- Paper number
IAC-12,B1,4,2,x14287
- Author
Dr. Manfredi Porfilio, Italian Space Agency (ASI), Italy
- Coauthor
Mrs. Claudia A. M. Fiorentino, Italian Space Agency (ASI), Italy
- Coauthor
Mr. Gianni Casonato, Italian Space Agency (ASI), Italy
- Coauthor
Dr. Stefano Serva, Italian Ministry of Defense, Italy
- Coauthor
Mr. Andrea Cecchini, Italian Ministry of Defense, Italy
- Coauthor
Mrs. Flavia Carnevale, Thales Alenia Space Italia, Italy
- Coauthor
Dr. Giuseppe D'Amico, Italian Ministry of Defense, Italy
- Year
2012
- Abstract
COSMO-SkyMed Second Generation (CSG) is an Earth Observation space programme funded by the Italian Space Agency (ASI) and the Italian Ministry of Defence (ItMoD), which is composed of two satellites with a Synthetic Aperture Radar (SAR) payload. CSG will assure the service continuity with respect to the current fully-deployed four-satellite COSMO-SkyMed (CSK) system, increasing its operational performances. The CSG Spotlight focusing chain will be improved through the implementation of an Enhanced Ω-K algorithm, in order to cope with high-squinted data acquisition and to take into account the effect of the topography. Since small errors on targets height induce strong defocusing effects due to incorrect doppler rate computation, a Precise Topography and Aperture-dependent Motion Compensation (PTA MoCo) algorithm has been studied, which is a new short fast Fourier transform-based post-processing methodology capable of efficient and precise compensation of the topography and aperture-dependent residual phase errors, allowing high-quality motion compensation even in case of strong topography changes. The aim of this paper is to describe the implementation of the Enhanced Ω-K algorithm and its improvement with respect to the Fast Ω-K used in the first generation Spotlight processors, analyzing the quantitative performance increment on high-squinted Spotlight simulated data and PTA quality performances.
- Abstract document
- Manuscript document
IAC-12,B1,4,2,x14287.pdf (🔒 authorized access only).
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