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ABSTRACT
The phase difference method can compensate the atmospheric disturbance in GB-SAR interferometry without the process of phase unwrapping, but its accuracy and effectiveness have not been analysed. This paper, therefore, analyses and validates this method by a simulation experiment and two real data experiments. Furthermore, we establish a quadratic model of the phase difference method to deal with the large range observation. The results show that the phase difference method can avoid possible phase unwrapping error and achieve a compensation accuracy (<0.3 mm) that is consistent with that of the traditional method.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Funding
This research was supported by the following research projects: the National Natural Science Foundation of China under Grant (61427802, 41330634, 41374016); the science and technology project of State Grid (Research and application on intelligent monitoring and early warning technology of geological hazard for power transmission line based on InSAR, GCB17201700121).