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For spaceborne SAR (Synthetic Aperture Radar) systems, the dispersive effects of the ionosphere on the propagation of the SAR signal can be a significant source of phase error. While at X-band frequencies the effects are small, current and future P-, L-and C-band systems would benefit from ionospheric compensation to avoid errors in topographic retrieval. In this paper the focus is on the effects of the ionosphere on repeat-pass SAR interferometry from P-through X-bands and methods for theirdoi:10.1109/igarss.2011.6049351 dblp:conf/igarss/BrcicPEBM11 fatcat:vbjn4v2spjcf7i7i5z62vxnu4a