InSAR监地表三维形变的研究-大地测量学与测量工程专业毕业论文.docx

中南大学硕士学位论文 中南大学硕士学位论文 ABSllR A(?r AB STRACT Synthetic Aperture Radar Interferometry(InSAR)is a newly developed technology which call survey the earth’s surface from space．The technology has the advantages of all—weather,large—scale，hi曲precision，eontactlessness and rapidly become the study hotspot all over the world．Especially,Differential InSAR(DInSAR) has been widely used to detect sub-centimeter ground deformation,such弱 earthquake，ground subsidence，volcano movement，glacier excursion and mountain landslide．Besides,in order to avoid temporal and spatial decorrelation and atmospheric delay,many scholars have developed the technology of Persistent Scatterer(PSInSAR)and Comer Reflector(CmnSAR)in the base of InSAR However,above-mentioned technology can only detect one-dimensional ground deformation in the Line-of-Sight(LOS)．Most of time，this one—dimensional deformation can not reflect the real ground deformation．The main content of the dissertation is discussing and studying how to戳InSAR to detect three-dimensional ground deformation．． First，the theory and characteristic of InSAR DInSAR PSInSAR and CRInSAR are Introduced．In addition，the sensitivity of lnSAR and the feasibility of DInSAR are analyzed． Second，some popular methods in the world of using InSAR detect three-dimensional ground deformation ale introduced．And the feasibility and applicability of these methods are studied and compared． Third，using GAMMA software，which is one of the best SAR data processing sotlcwares，and SAR data of Shanghai and Taiwan，the flow of interferometry, differential interferometry and geocoding ale demonstrated．Besides，the choosing of algorithms and parameters in the GAMMA are analyzed． Fourth,the method of combining CRInSAR and Kalman filter to detect three-dimensional ground deformation is discussed in the dissertation．The computation model has been established and the example of H