Benefit of using multiple baselines and multiple aspects for SAR interferometry of urban areas

Michael Schmitt, Johannes L. Schönberger, Uwe Stilla

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In this paper, extensive real-data experiments for the investigation of the benefit of exploiting multiple aspects and multiple baselines for the reconstruction of urban surface models by synthetic aperture radar interferometry are documented. These experiments are carried out within a recently proposed reconstruction framework that allows the fusion of almost arbitrary configurations of multi-aspect multi-baseline InSAR data. The results based on airborne decimeter-resolution millimeterwave imagery prove and quantify that multiple baselines help to solve the phase ambiguity problem, while multiple aspects reduce the parts of the scene affected by radar shadowing. In addition, the inherent redundancy provides a significant improvement in the achievable reconstruction accuracy, which is evaluated relative to the reconstruction error common for conventional single-aspect single-baseline SAR interferometry.

Original languageEnglish
Article number6797901
Pages (from-to)4107-4118
Number of pages12
JournalIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Volume7
Issue number10
DOIs
StatePublished - 1 Oct 2014

Keywords

  • Maximum-likelihood estimation
  • Multi-aspect
  • Multi-baseline
  • Synthetic aperture radar (SAR)
  • Synthetic aperture radar interferometry (InSAR)
  • Urban areas

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