High-quality pixel selection in ground-based SAR interferometry based on pseudo- and quasi-permanent scatterers analyses

Zengshu Huang; Jinping Sun; Qing Li; Weixian Tan; Pingping Huang; Kuoye Han; Yaolong Qi

doi:10.1117/1.JRS.13.014507

31 January 2019 High-quality pixel selection in ground-based SAR interferometry based on pseudo- and quasi-permanent scatterers analyses

Zengshu Huang, Jinping Sun, Qing Li, Weixian Tan, Pingping Huang, Kuoye Han, Yaolong Qi

Author Affiliations +

Funded by: National Natural Science Foundation of China (NSFC), Natural Science Foundation of China, Natural Science Foundation of Inner Mongolia, Inner Mongolia Autonomous Region Science and Technology Innovation Guide Project

Journal of Applied Remote Sensing, Vol. 13, Issue 1, 014507 (January 2019). https://doi.org/10.1117/1.JRS.13.014507

Abstract

Due to the presence of phase noise and temporal decorrelation, high-quality pixel selection has been an indispensable part in ground-based synthetic aperture radar (GB-SAR) interferometry. The main pixel selection methods are permanent scatterer (PS) methods and coherent scatterer methods. However, both of them cannot properly solve the false-selection and the miss-selection caused by intrinsic scattering and temporal characteristics of the pixel on the whole dataset. Pseudo-PS and quasi-PS are first introduced into the high-quality pixel selection of GB-SAR interferometry, and a temporal selection method (TSM) is proposed to avoid the miss-selection of quasi-PS. Then, in order to achieve appropriate pixel density and high-quality pixels for deformation monitoring, a high-quality interferometric pixel selection method based on pseudo- and quasi-permanent scatterers analyses is proposed, which is a joint processing technique combining spatial variant apodization with TSM. Finally, the effectiveness of the proposed high-quality pixel selection method is validated by the field measurements of GB-SAR data.

Citation Download Citation

Zengshu Huang, Jinping Sun, Qing Li, Weixian Tan, Pingping Huang, Kuoye Han, and Yaolong Qi "High-quality pixel selection in ground-based SAR interferometry based on pseudo- and quasi-permanent scatterers analyses," Journal of Applied Remote Sensing 13(1), 014507 (31 January 2019). https://doi.org/10.1117/1.JRS.13.014507

Received: 27 March 2018; Accepted: 9 January 2019; Published: 31 January 2019

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