Estimation and compensation of ionospheric delay for SAR interferometry

Author

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

Author_Institution

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

fYear

2010

fDate

25-30 July 2010

Firstpage

2908

Lastpage

2911

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 L-band systems would benefit from ionospheric compensation. We consider two ways to estimate the ionospheric delay in SAR signals and evaluate them on L-band ALOS-PALSAR acquisitions.

Keywords

compensation; data acquisition; ionospheric electromagnetic wave propagation; radar interferometry; radiowave propagation; remote sensing by radar; spaceborne radar; synthetic aperture radar; L-band ALOS-PALSAR acquisition; L-band system; SAR interferometry; SAR signal propagation; X-band frequency; dispersive effect; ionospheric delay compensation; ionospheric delay estimation; phase error; spaceborne SAR system; synthetic aperture rada; Azimuth; Bandwidth; Delay; Estimation; Frequency estimation; Ionosphere; L-band; delta-k; ionosphere; split-spectrum; wideband interferometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International

Conference_Location

Honolulu, HI

ISSN

2153-6996

Print_ISBN

978-1-4244-9565-8

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2010.5652231

Filename

5652231