Ghost persistent scatterers related to multiple signal reflections

Stefan Auer, Stefan Gernhardt, Richard Bamler

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Persistent scatterer interferometry using stacks of very high resolution synthetic aperture radar (SAR) data reveals that single or even patterns of scatterers representing building structures may wrongly be localized below the ground level. In this letter, a case study on a test building model is presented using 3-D SAR simulation methods in order to explain the underlying localization problem. The case study indicates that Ghost-PSs are likely to be related to reflection levels that are higher than three. Moreover, the temporal stability of the amplitude of fivefold bounce signals is confirmed for a SAR data stack.

Original languageEnglish
Article number5764819
Pages (from-to)919-923
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
Volume8
Issue number5
DOIs
StatePublished - Sep 2011

Keywords

  • 3-D synthetic aperture radar (SAR) simulation
  • Multiple signal reflections
  • TerraSAR-X
  • persistent scatterer interferometry (PSI)

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