Ionospheric effects in SAR interferometry: An analysis and comparison of methods for their estimation

Author

Brcic, Ramon ; Parizzi, Alessandro ; Eineder, Michael ; Bamler, Richard ; Meyer, Franz

Author_Institution

Remote Sensing Technol. Inst., German Aerosp. Center (DLR), Wessling, Germany

fYear

2011

fDate

24-29 July 2011

Firstpage

1497

Lastpage

1500

Abstract

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-, Land 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 Pthrough X-bands and methods for their estimation which are demonstrated on L-band ALOS-PALSAR acquisitions.

Keywords

ionospheric electromagnetic wave propagation; ionospheric techniques; radar interferometry; synthetic aperture radar; C-band system; L-band ALOS-PALSAR acquisitions; L-band system; P-band system; SAR signal; X-band frequencies; dispersive effects; ionospheric compensation; ionospheric effects; phase error; repeat-pass SAR interferometry; spaceborne SAR systems; topographic retrieval; wideband interferometry; Azimuth; Bandwidth; Delay; Estimation; Interferometry; Ionosphere; Synthetic aperture radar; delta-k; ionosphere; split-spectrum; wideband interferometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International

Conference_Location

Vancouver, BC

ISSN

2153-6996

Print_ISBN

978-1-4577-1003-2

Type

conf

DOI

10.1109/IGARSS.2011.6049351

Filename

6049351