Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 5, pp. 122-132
On monitoring surface displacements of natural terrains using SAR interferometry
E.A. Kiseleva
1 , V.O. Mikhailov
1 , E.I. Smolyaninova
1 , P.N. Dmitriev
1 1 O.Yu. Schmidt Institute of Physics of the Earth RAS, Moscow, Russia
Accepted: 25.09.2017
DOI: 10.21046/2070-7401-2017-14-5-122-132
For SAR monitoring of surface displacements of territories with lack of good reflectors of radar signals it is extremely important to work out a technique to reveal signals reflected from natural terrains. These signals are characterized by low amplitude and poor coherence for some interferometric pairs. We present critical analysis of different InSAR methods, including those which are the most promising to identify both Persistent and Distributed scatterers (APSI — Advanced Persistent Scatterer Interferometry). We discuss the method of adaptive amplitude filtration which was developed in the framework of the APSI technology (Feretti et al., 2011) and its implementation as the StaMPS/MTI (Hooper et al., 2007) module. We present fields of surface displacement rates for the Adler region of Sochi calculated using ALOS PALSAR images by means of the StaMPS/MTI software applying of the proposed adaptive filtration of amplitude and without any preliminary processing. Application of adaptive filtering of amplitude permitted us to increase the number of Persistent Scatterers from 30000 to 50000.
Keywords: INSAR, persistent and distributed scatterers, APSI
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