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Towards a Complete Processing Chain of Multibaseline Airborne InSAR Data for Layover Scatterers Separation

Interest is continuing to grow in exploiting the advanced multibaseline operation of synthetic aperture radar interferometry (InSAR) to solve layover effects, that can degrade conventional InSAR topographic mapping. In this work we report about experiments of the functionality of "layover-free" or "higher-order" interferometry with the dual-baseline single-pass SAR interferometer AER-II. Estimation of the number of multiple layover scatterers, i.e. of the interferometric order, and model-based spatial spectral estimation are integrated to process the three-antenna non uniform array data. Results are discussed for a bridge over the valley test site.