A multi-temporal InSAR method incorporating both persistent scatterer and small baseline approaches

A multi-temporal InSAR method incorporating both persistent scatterer and small baseline approaches

Hooper, A.

Aerospace Engineering

Delft Institute for Earth Observation and Space Systems

2008-08-19

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, persistent scatterer and small baseline 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.

MT-UnSAR
PSI
SBAS

http://resolver.tudelft.nl/uuid:528eb89a-0438-4b95-811a-9b2489b344de

https://doi.org/10.1029/2008GL034654

American Geophysical Union

0094-8276

http://europa.agu.org/?view=article&uri=/journals/gl/gl0816/2008GL034654/2008GL034654.xml

Geophysical Research Letters, 35, 2008

Institutional Repository

journal article

(c) 2008 Hooper, A.; American Geophysical Union