A multi‐temporal InSAR method incorporating both persistent scatterer and small baseline approaches
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- Andrew Hooper
- Nordic Volcanological Center Institute of Earth Sciences, University of Iceland Reykjavik Iceland
書誌事項
- 公開日
- 2008-08
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2008gl034654
- 公開者
- American Geophysical Union (AGU)
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説明
<jats:p>Synthetic aperture radar (SAR) interferometry is a technique that provides high‐resolution measurements of the ground displacement associated with many geophysical processes. Advanced techniques involving the simultaneous processing of multiple SAR acquisitions in time increase the number of locations where a deformation signal can be extracted and reduce associated error. Currently there are two broad categories of algorithms for processing multiple acquisitions, <jats:italic>persistent scatterer</jats:italic> and <jats:italic>small baseline</jats:italic> methods, which are optimized for different models of scattering. However, the scattering characteristics of real terrains usually lay between these two end‐member models. I present here a new method that combines both approaches, to extract the deformation signal at more points and with higher overall signal‐to‐noise ratio than can either approach alone. I apply the combined method to data acquired over Eyjafjallajökull volcano in Iceland, and detect time‐varying ground displacements associated with two intrusion events.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 35 (16), L16302-, 2008-08
American Geophysical Union (AGU)
