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Deformation Hazards

By J. Wu A, J. Cai B, C. Hu A, F. Xiao A and C. Liu A


In this paper, a set of quaternary arc time series of the double phase differences formed by a PS (Permanent Scatter) with its surrounding four PSs in each quadrant are processed together, where the spatial constrains on the parameters are included directly in the adjustment model. Equations of this spatiotemporal analysis model are formulated. A simulation example using this new method is presented. It shows that a priori information of the crustal deformation can be integrated into the integer least squares adjustment model to improve the accuracy of parameters estimated. 1. INTRUDUCTION Repeat-pass satellites SAR interferometry (InSAR) technology has been used for providing EDMs with meter accuracy and terrain deformations with millimetric accuracy (Hanssen, 2001). It has significant advantages over traditional geodetic methods for its larger spatial coverage with high spatial resolutions and all weather running. InSAR technology has been used for crustal deformation monitoring, such as ground subsidence, slope slides, volcanoes and so on. However, the essential limitations of InSAR are due to temporal and geometrica

Year: 2011
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