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A combined estimator for Interferometric SAR ionosphere correction
A combined estimator for Interferometric SAR ionosphere correction
- 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.
- Subjects :
- Synthetic aperture radar
010504 meteorology & atmospheric sciences
Computer science
Aperture
0211 other engineering and technologies
Polarimetry
Estimator
02 engineering and technology
Geodesy
01 natural sciences
Physics::Geophysics
symbols.namesake
Interferometry
Faraday effect
Interferometric synthetic aperture radar
symbols
Ionospheric effect
Cryosphere
Ionosphere
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Group delay and phase delay
Remote sensing
Subjects
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