The PSIG chain: an approach to Persistent Scatterer Interferometry

被引：2

作者：

Devanthery, Nuria ^{[1
]}

Crosetto, Michele ^{[1
]}

Monserrat, Oriol ^{[1
]}

Cuevas-Gonzalez, Maria ^{[1
]}

Crippa, Bruno ^{[2
]}

机构：

[1] CTTC, Av Gauss 11, E-08860 Barcelona, Spain

[2] Univ Milan, Dept Earth Sci, I-20129 Milan, Italy

来源：

SAR IMAGE ANALYSIS, MODELING, AND TECHNIQUES XIV | 2014年 / 9243卷

关键词：

Persistent Scatterer Interferometry; phase unwrapping; deformation measurement; PERMANENT SCATTERERS; SAR; ALGORITHM;

D O I：

10.1117/12.2066276

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

The PSIG procedure is a new approach to Persistent Scatterer Interferometry (PSI), which is implemented in the in-house PSI chain of the Geomatics Division of the CTTC. The PSIG procedure has been successfully tested over urban, rural and vegetated areas using X-band SAR data. This paper briefly describes the main steps of the procedure, mainly focusing on the two key processing steps of the approach. The first one is a selection of Persistent Scatterers (PS) consisting in a candidate Cousin PS (CPS) selection based on a phase similitude criteria that allows a correct phase unwrapping and a phase unwrapping consistency check. The second key element is a 2+1D phase unwrapping algorithm, which consists in a 2D phase unwrapping followed by a 1D phase unwrapping that allows the detection and correction of unwrapping errors. The results of the CPS selection and the 2+1D phase unwrapping obtained using a stack of 28 TerraSAR-X StripMap images over the metropolitan area of Barcelona are shown.

引用

页数：6

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