Interferometric SAR (InSAR) systems allow the estimation of the height profile of the Earth surface. When the observed scene is characterized by high ground slopes or exhibits strong height profile discontinuities (like in urban areas), the height reconstruction obtained from a single interferogram is ambiguous, since the solution of the estimation problem is not unique. To solve this ambiguity and restore the solution uniqueness, multiple interferograms, obtained with different baselines and/or with different frequencies, have to be used (multi-channel InSAR). In this paper a brief review of three multi-channel InSAR methods, together with an analysis of achievable reconstruction accuracy, is presented.
DEM Reconstruction Accuracy of Multi-Channel SAR Interferometry in Urban Areas
PASCAZIO, Vito;SCHIRINZI, Gilda
2007-01-01
Abstract
Interferometric SAR (InSAR) systems allow the estimation of the height profile of the Earth surface. When the observed scene is characterized by high ground slopes or exhibits strong height profile discontinuities (like in urban areas), the height reconstruction obtained from a single interferogram is ambiguous, since the solution of the estimation problem is not unique. To solve this ambiguity and restore the solution uniqueness, multiple interferograms, obtained with different baselines and/or with different frequencies, have to be used (multi-channel InSAR). In this paper a brief review of three multi-channel InSAR methods, together with an analysis of achievable reconstruction accuracy, is presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
