Deformation detecting algorithms with auxiliary GPS data in SAR interferogram

Tao Li; Jingnan Liu

doi:10.1117/12.538717

25 September 2003 Deformation detecting algorithms with auxiliary GPS data in SAR interferogram

Tao Li, Jingnan Liu

Proceedings Volume 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition; (2003) https://doi.org/10.1117/12.538717
Event: Third International Symposium on Multispectral Image Processing and Pattern Recognition, 2003, Beijing, China

Abstract

Recently, SAR interferometry (InSAR) is popular in low-resolution DEM generation and high precision deformation measurement. There are many uncertain errors in InSAR processing that cannot be modeled and eliminated, such as tropospheric delay, phase unwrapping error, baseline error, and propagating noise. As we cannot decrease these errors just by SAR data processing, many other means have been presented to solve the problems. GPS signal and SAR signal are microwave of the same kind, and have the same attribute in propagation, so we can integrate GPS data into InSAR data to eliminate the same propagating errors in the aerosphere. What is more, GPS can observe high precision deformation better than differential InSAR has done. It is valuable to compare the results derived from these two methods. Researaches undertaken by some institutes on integration of GPS and InSAR have shown a prospective future. Therefore, this paper aims to analyze the methods of GPS and InSAR integration and apply them into the case study of city subsidence.

Citation Download Citation

Tao Li and Jingnan Liu "Deformation detecting algorithms with auxiliary GPS data in SAR interferogram", Proc. SPIE 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition, (25 September 2003); https://doi.org/10.1117/12.538717

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