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《Science of Surveying and Mapping》 2011-02
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Automatic detection of permanent scatterers in PSInSAR

HU Bo①②,WANG Han-sheng①,JIA Lu-lu①②(①Key Laboratory of Dynamic Geodesy,Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077,China;②Graduate School of Chinese Academy of Sciences,Beijing 100049,China)  
In order to effectively detect permanent scatterers in differential Interferometry of Synthetic Aperture Radar,a ri-threshold automatic method was proposed in the paper taking into account the characteristics of strong reflection and stable backscattering of permanent scatterers to radar waves.It serially set tri-threshold corresponding to time-series correlation-coefficient,amplitude dispersion index and amplitude index.In this method,considering the characteristic of high signal-noise-ratio,the average correlation coefficients and amplitude were firstly used to choose the initial candidates of permanent scatterers.And then further considering the strong stability of permanent scatterers,the amplitude dispersion threshold was utilized to produce the final permanent scatterers from the candidates.Finally,the proposed method was proved to be effective and reliable by an experiment with 24 ERS1 /2 C-band synthetic aperture radar images in a region of Shanghai.
【Fund】: 国家杰出青年科学基金项目冰后回弹(40825012)
【CateGory Index】: P225.1
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