Multilayer Ionosphere Correction in Low-Frequency Interferometric SAR: Modeling, Inversion, and Application to BIOMASS (opens in new tab)

Early analysis of BIOMASS interferometric data acquired during the commissioning phase at Boreal and Antarctic latitudes revealed the presence of strong ionospheric disturbances that cause severe coherence losses. This phenomenon was investigated by studying the variations of the interferometric phase with respect to the squint angle. The observed phase variations turned out to be consistent with the assumption of a complex vertical structure of the ionospheric phase, characterized by fast az...