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A combined estimator for Interferometric SAR ionosphere correction

A combined estimator for Interferometric SAR ionosphere correction

Authors :
Heming Liao
Franz J. Meyer
Source :
IGARSS
Publication Year :
2016
Publisher :
IEEE, 2016.

Abstract

In recent years, large number of Interferometric SAR applications in earthquake, cryosphere and tectonic geodesy show the great needs for ionospheric effect correction [1–4]. Several approaches, which mainly include the split spectrum InSAR technique, the Faraday rotation based method and the azimuth shift based method (the Multiple Aperture Interferometric and conventional azimuth shift) have been proposed to meet this end [5–11]. These techniques exploit different aspects — phase delay, polarimetric property and geometric distortion of the ionospheric effect on SAR data to retrieve the differential ionosphere in InSAR. These techniques work well in certain conditions, however, their performance might be limited in cases due to noise effect and the weakness of each technique itself. In this study, we are proposing a combined estimator by joining the Faraday rotation based method and the split spectrum technique of InSAR ionospheric effect correction, which is supposed to achieve a more robust and higher accuracy performance comparing to individual technique itself.

Details

Database :
OpenAIRE
Journal :
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Accession number :
edsair.doi...........9af0d43715545c31eea7b45343bc7a68
Full Text :
https://doi.org/10.1109/igarss.2016.7730698