High Resolution Ground Deformations Monitoring by Cosmo-skymed Psp Sar Interferometry: Accuracy Analysis and Validation
نویسندگان
چکیده
Synthetic aperture radar (SAR) interferometry is a powerful technology for detection and monitoring of slow terrain movements. Extraction of this information is a complex task. The persistent scatterer pair (PSP) approach was recently proposed to overcome limitations of standard persistent scatter interferometry. The PSP method exploits only the relative properties of neighboring points to avoid the problems caused by atmospheric and orbital artefacts in the signal. In this work, after resuming the main ideas of the PSP method, we describe the validation performed by comparing the PSP measurements obtained from Envisat and high resolution X-band COSMO-SkyMed data over Beijing with precise optical leveling data. The results confirm the validity of the PSP method and demonstrate that very accurate ground deformation measurements can be obtained from COSMO-SkyMed data.
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