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Bridging InSAR and GPS Tomography: A New Differential Geometrical Constraint

Miranda, P. M. A

The integration of interferometric synthetic aperture radar (InSAR) and GPS tomography techniques for the estimation of the 3-D distribution of atmosphere refractivity is discussed. A methodology to use the maps of the temporal changes of precipitable water vapor (PWV) provided by InSAR as a further constraint in the GPS tomography is described. The aim of the methodology is to increase the accuracy of the GPS tomography reconstruction of the atmosphere's refractivity. The results, which are obtained with SAR and GPS data acquired over the Lisbon area, Portugal, are presented and assessed. It has been found that the reconstruction of the atmospheric refractivity is closer to the real atmospheric state with a mitigation of the smoothing effects due to the usual geometrical constraints of the GPS tomography.

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Bridging InSAR and GPS Tomography: A New Differential Geometrical Constraint

Miranda, P. M. A

The integration of interferometric synthetic aperture radar (InSAR) and GPS tomography techniques for the estimation of the 3-D distribution of atmosphere refractivity is discussed. A methodology to use the maps of the temporal changes of precipitable water vapor (PWV) provided by InSAR as a further constraint in the GPS tomography is described. The aim of the methodology is to increase the accuracy of the GPS tomography reconstruction of the atmosphere's refractivity. The results, which are obtained with SAR and GPS data acquired over the Lisbon area, Portugal, are presented and assessed. It has been found that the reconstruction of the atmospheric refractivity is closer to the real atmospheric state with a mitigation of the smoothing effects due to the usual geometrical constraints of the GPS tomography.

Bridging InSAR and GPS Tomography: A New Differential Geometrical Constraint

Miranda, P. M. A

The integration of interferometric synthetic aperture radar (InSAR) and GPS tomography techniques for the estimation of the 3-D distribution of atmosphere refractivity is discussed. A methodology to use the maps of the temporal changes of precipitable water vapor (PWV) provided by InSAR as a further constraint in the GPS tomography is described. The aim of the methodology is to increase the accuracy of the GPS tomography reconstruction of the atmosphere's refractivity. The results, which are obtained with SAR and GPS data acquired over the Lisbon area, Portugal, are presented and assessed. It has been found that the reconstruction of the atmospheric refractivity is closer to the real atmospheric state with a mitigation of the smoothing effects due to the usual geometrical constraints of the GPS tomography.

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Title:

Bridging InSAR and GPS Tomography: A New Differential Geometrical Constraint

Contributors:

Miranda, P. M. A (author) / Nico, Giovanni / Catalao, Joao / Benevides, Pedro

Published in:

IEEE transactions on geoscience and remote sensing ; 54

Publication date:

2016

ISSN:

DOI:

https://doi.org/10.1109/TGRS.2015.2463263

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Fernerkundung , Messtechnik , Zeitschrift , Elektronik , Geowissenschaften

Classification:

Local classification TIB: 770/3710/5670
BKL: 38.03 Methoden und Techniken der Geowissenschaften / 74.41 Luftaufnahmen, Photogrammetrie

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