Ionosphere vertical profiling from biomass multi-squint InSAR

摘要

In this work, we discuss the retrieval of information about the vertical structure of the ionospheric phase by means of Multi-Squint Interferometry (MSInSAR). A model of the MS phase is proposed that accounts for multiple ionospheric layers and residual topographical terms. This model is then generalized to the case of a continuous distribution, which can be retrieved from the MS phase via a 2D Fourier Transform. Moreover, we demonstrate the possibility to single out the phase screen at each layer, plus the residual topographic phase. The inversion procedure is demonstrated through numerical simulations, based on BIOMASS system parameters.