| As a new remote sensing technique, Synthetic Aperture Radar Interferometry(InSAR) has many advantages such as all weather imaging capability, high precision and wide spatial coverage and has attracted more and more attention by scholars all over the world. During the last 20 years, it changes from laboratory study to operational tool, and was used in wider and wider domain. Originally was used for DEM mapping. Now it was used to detect surface deformation, investigate forest, monitoring ocean and ice, study hydrology and polar and so on. Its application to the domain of seismology is very successful. This dissertation mainly discusses the principle of InSAR and its application to the domain of earthquake's deformation detection.This dissertation conducts systemic studied on the detection of earthquake deformation by InSAR and the determination source parameter of earthquake. The main study falls into the following parts:(1)Introduces the detail steps of SAR data processing on Doris, which was run on the Linux operating system. Using the Chi-Chi earthquake as an example, this dissertation derived the co-seismic deformation of the earthquake.(2)Analyzes the theory of elastic half-space dislocation model and describes the details of modeling earthquake deformation base on point source or finite rectangular source. Finite rectangular source was used for modeling the surface displacement of strike fault,slip fault and tensile fault, and the interferogram of deformation bases on the known parameters of Zhangbei-Shangyi, the Iran Bam earthquake was derived.(3)Stimulates the co-seismic deformation field of Chi-Chi earthquake base on Okada elastic half space dislocation theory (finite rectangular source). Finally we determine the optimal source parameters of fault for Chi-Chi earthquake.
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