Title :
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
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;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5652231
