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Compensation of ionospheric effects for InSAR stacks by means of a split-spectrum method

机译:通过分离谱法通过分离谱法对InSAR堆叠的电离层效应的补偿

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Split-spectrum approaches have proven successful at estimating ionospheric corrections by modeling the differential contribution to the interferometric phase for spectral subbands. The accuracy of these methods can degrade pretty quickly for large temporal baselines due to the drop in interferometric coherence. We attempt to circumvent this problem by limiting the processing to a set of reliable pixels, namely those processed using a Persistent Scatterers Interferometry method. Preliminary results indicate that it is feasible to estimate the ionospheric corrections at the points of interest, taking advantage of the robustness of multi-temporal phase estimation as well as the unwrapping capabilities of PSI.
机译:通过将差异贡献对光谱子带的干涉阶段进行建模,可以在估计电离层校正时被证明是成功的。 由于干涉式相干下降,这些方法的准确性可以很快地降低大型时间基线。 我们通过将处理限制为一组可靠像素来试图绕过这个问题,即使用持久散射器干涉测量方法处理的那些。 初步结果表明,估计兴趣点的电离层校正是可行的,利用多时间相位估计的稳健性以及PSI的展开能力。

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