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Updated: Jul 7, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
Published on: February 12, 2014
Multifrequency InSAR height reconstruction through maximum likelihood estimation of local planes parameters
Vito Pascazio1, Gilda Schirinzi
1Inst. di Teoria e Tecnica delle Onde Elettromagnetiche, Univ. di Napoli Parthenope, Italy. vito.pascazio@uninav.it
Abstract:
In this paper, a technique that is able to reconstruct highly sloped and discontinuous terrain height profiles, starting from multifrequency wrapped phase acquired by interferometric synthetic aperture radar (SAR) systems, is presented. We propose an innovative unwrapping method, based on a maximum likelihood estimation technique, which uses multifrequency independent phase data, obtained by filtering the interferometric SAR raw data pair through nonoverlapping band-pass filters, and approximating the unknown surface by means of local planes. Since the method does not exploit the phase gradient, it assures the uniqueness of the solution, even in the case of highly sloped or piecewise continuous elevation patterns with strong discontinuities.
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