A StaMPS PSI time series analysis method combined with GACOS and linear atmospheric correction

doi:10.13474/j.cnki.11-2246.2022.0302

Abstract

Abstract: The radar signal will get propagation path delay when it through the atmosphere, which will affect the accuracy of InSAR measurement. Although the conventional time series InSAR analysis method based on spatio-temporal filtering can weaken its influence, it still has certain limitations. StaMPS PSI time series analysis method is favored by many scholars because of its many advantages.Therefore, in this paper, taking Hong Kong as an example,a StaMPS PSI time series analysis method combining GACOS and linear atmospheric correction is proposed and compared with conventional StaMPS PSI. Finally, GNSS observation data is used to verify the InSAR results. The results show that the conventional time series analysis method can better overcome the influence of atmospheric delay when the SAR data sets are abundant, but the new method can better reflect the real surface deformation.

Key words: time series InSAR, StaMPS PSI, GACOS, atmospheric delay, land subsidence monitoring

CLC Number:

P237

HE Xishan, ZHOU Ping, CHEN Gang. A StaMPS PSI time series analysis method combined with GACOS and linear atmospheric correction[J]. Bulletin of Surveying and Mapping, 2022, 0(10): 105-109,128.

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