Multi-Baseline Phase Unwrapping With a Refined Parametric Pure Integer Programming for Noise Suppression
IEEE Journal on Miniaturization for Air and Space Systems(2024)
Abstract
Multi-baseline phase unwrapping (MBPU) is a key procedure of interferometric synthetic aperture radar (InSAR). However, phase noise is a factor still challenging the MBPU accuracy. This paper presents a refined pure integer programming (RPIP) based MBPU method. In this method, a new parameter is introduced through considering the statistical information of the interferometric phase, which are adopted to improve the tolerance of phase noise. We also provide an effective path for searching of the ambiguity set. Theoretical analysis and experimental results show that, compared with the PIP method, unwrapping errors of the RPIP method is reduced by 60%.
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Key words
Multibaseline (MB),interferometric synthetic aperture radar (InSAR),phase unwrapping (PU),noise robustness,parametric
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