InSAR Elevation Bias Caused by Penetration Into Uniform Volumes

  title={InSAR Elevation Bias Caused by Penetration Into Uniform Volumes},
  author={J\orgen Dall},
  journal={IEEE Transactions on Geoscience and Remote Sensing},
Natural media like cold-land ice, vegetation, and dry sand are subject to a substantial penetration at microwave frequencies. For such media, the synthetic aperture radar (SAR) phase center is located below the surface, and consequently, the surface elevation determined with SAR interferometry (InSAR) is biased downward. For infinitely deep uniform volumes, the elevation bias is often equated with the penetration depth, but in this paper, it is shown that the two quantities generally differ… CONTINUE READING
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