Polarization Impact in TanDEM-X Data over Vertical-Oriented Vegetation: The Paddy-Rice Case Study

Esra Erten, Cristian Rossi, Onur Yüzügüllü

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


It has been recently shown that the TanDEM-X mission is capable of tracking the plant growth of rice paddies. The precision of the elevation measure depends on the physical interaction between the synthetic aperture radar (SAR) signal and the canopy. In this letter, this interaction is studied by considering the signal polarization. In particular, the vertical and horizontal wave polarizations are compared, and their performance in the temporal mapping of the crop height is analyzed. The temporal elevation difference analysis shows a monotonically increasing trend within the reproductive stage of the canopy, with maximum height discrepancies between polarizations of about 9 cm. From an operational point of view of InSAR-based vegetation height measurements, this letter demonstrates that the oriented structure of the canopy shall be considered not only in polarimetric InSAR studies but also in the interpretation of bistatic spaceborne interferometric elevation models.

Original languageEnglish
Article number7063930
Pages (from-to)1501-1505
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
Issue number7
Publication statusPublished - 1 Jul 2015

Bibliographical note

Publisher Copyright:
© 2004-2012 IEEE.


  • Agriculture
  • copolar phase difference (CPD)
  • polarimetry
  • synthetic aperture radar (SAR)
  • TanDEM-X
  • X-Band


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