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Resolving Three-dimensional Surface Displacements From Insar Measurements a Review

Written By segunda-feira, 18 de abril de 2022 Add Comment Edit

Abstract

The ability of differential interferometric synthetic aperture radar (DInSAR) technology used for centimeter level deformation detection has been well-proved. Notwithstanding, the applications of DInSAR nether the low World orbit (LEO) are limited to the line-of-sight (LOS) measurements, the limited observation surface area and the long revisited time. Geosynchronous SAR (GEO SAR), which runs in the height of 36000 km with the advantage of a brusk revisit time and a large observation area, is a potential approach to overcome the series problems in LEO SAR. This paper focuses on estimating three-dimensional (3D) displacements by using GEO SAR DInSAR measurements caused from multiple imaging geometries. Aiming to provide a normal solution for geologic hazard monitoring and relative geophysical application in the future, the errors induced by decorrelation noise, orbital ramp and ionospheric distortion are analyzed for the GEO SAR DInSAR measurements. A serial of experiments have been conducted to observe the relationship between the 3D displacements and the DInSAR observations which are provided with unlike noises and combinations of imaging geometries. The results reveal that 3D displacements tin be expected from the combination of left- and right-looking GEO SAR DInSAR measurements. In particular, the due north-south solution tin can achieve centimeter and even millimeter level.

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Acknowledgments

This piece of work was supported by Advanced Project of Civil Aerospace Research of China: Earth Application and Key Technology Research of 20 thou-Resolution Geosynchronous SAR Satellite, National Natural Science Foundation of China (Grant Nos. 41404011, 41674010), Major Projects of High Resolution Earth Observation (Civil Part) (Grant No. 03-Y20A11-9001-15/16), National Research Foundation for the Doctoral Program of Higher Educational activity of Prc (Grant No. 20130162110015). The authors thank anonymous reviewers for their comments which profoundly improve the quality of the manuscript.

Author information

Affiliations

  1. Schoolhouse of Geosciences and Info-Physics, Cardinal South University, Changsha, Hunan, 410083, China

    Wanji Zheng, Jun Hu, Changjiang Yang, Zhiwei Li & Jianjun Zhu

  2. National Disaster Reduction Middle, Ministry of Ceremonious Affairs of the People's Commonwealth of China, Beijing, 100124, China

    Wei Zhang

Respective author

Correspondence to Jun Hu.

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Cite this article

Zheng, W., Hu, J., Zhang, W. et al. Potential of geosynchronous SAR interferometric measurements in estimating three-dimensional surface displacements. Sci. People's republic of china Inf. Sci. 60, 060304 (2017). https://doi.org/10.1007/s11432-016-9079-8

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  • DOI : https://doi.org/10.1007/s11432-016-9079-8

Keywords

  • GEOSAR
  • 3D displacements
  • DInSAR
  • IGSO
  • random error
  • systematic error

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Source: https://link.springer.com/article/10.1007/s11432-016-9079-8

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