Methods of InSAR atmosphere correction for volcano activity monitoring
By: W. Gong, F. Meyer, P.W. Webley, and Z. Lu
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Abstract
When a Synthetic Aperture Radar (SAR) signal propagates through the atmosphere on its path to and from the sensor, it is inevitably affected by atmospheric effects. In particular, the applicability and accuracy of Interferometric SAR (InSAR) techniques for volcano monitoring is limited by atmospheric path delays. Therefore, atmospheric correction of interferograms is required to improve the performance of InSAR for detecting volcanic activity, especially in order to advance its ability to detect subtle pre-eruptive changes in deformation dynamics. In this paper, we focus on InSAR tropospheric mitigation methods and their performance in volcano deformation monitoring. Our study areas include Okmok volcano and Unimak Island located in the eastern Aleutians, AK. We explore two methods to mitigate atmospheric artifacts, namely the numerical weather model simulation and the atmospheric filtering using Persistent Scatterer processing. We investigate the capability of the proposed methods, and investigate their limitations and advantages when applied to determine volcanic processes. ?? 2011 IEEE.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Methods of InSAR atmosphere correction for volcano activity monitoring |
| ISBN | 9781457710056 |
| DOI | 10.1109/IGARSS.2011.6049550 |
| Year Published | 2011 |
| Language | English |
| Larger Work Title | International Geoscience and Remote Sensing Symposium (IGARSS) |
| First page | 1654 |
| Last page | 1657 |
| Conference Title | 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 |
| Conference Location | Vancouver, BC |
| Conference Date | 24 July 2011 through 29 July 2011 |
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