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The rapid development and urbanization brought about by a variety of urban issues facing our country has become the most serious challenges. At present, China has taken initial shape of the urban system is a big city as the center, medium and small cities as the backbone of small towns based. Therefore, the development of medium and small cities in the urbanization process, occupies an important position...
The growing use of Internet in everyday life has been creating new challenges and opportunities to use data mining techniques. A relatively new trend in the Internet is the deep web. As a large number of deep web data sources tend to provide similar data, an important problem is to perform offline analysis to understand the differences in data available from different sources. This paper introduces...
Persistent Scatterers for SAR Interferometry (PS-InSAR) tecnique allows monitoring the temporal evolution of a deformation phenomenon at millimeter level, via the generation of mean deformation velocity maps and displacement time series from a data set of acquired SAR images. However, the serious noises of multi-temporal SAR images make the selection of permanent scatters (PSs) difficult. In this...
By estimating the phase information of stable natural reflectors or permanent scatterers of a set of SAR images, Persistent Scatterers for SAR Interferometry (PSInSAR) can be used to obtain the land subsidence information at milimeter level while the serious noises of multi-temporal SAR images which make it difficult. In this study, we study the influence of PS-InSAR method based on wavelet phase...
Decorrelation caused by temporal change and SAR imaging geometry prevents conventional SAR interferometry from monitoring land surface subsidence precisely. In addition, conventional methods donpsilat deal with phase delay which caused by atmosphere. It negatively influences the accuracy of differential synthetic aperture radar interferometry (D-InSAR) for small-scale deformation monitoring. In this...
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