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Interferometric synthetic aperture radar for deformation mapping: opportunities, challenges and the outlook雷达影像地表形变干涉测量的机遇、挑战与展望

Lookup NU author(s): Chen YuORCiD, Dr Chuang Song

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Abstract

© 2022 SinoMaps Press. All rights reserved.With frequent launches of synthetic aperture radar (SAR) satellites, interferometric SAR (InSAR) technology has been presented with unprecedented opportunities along with many new challenges for deformation mapping. In this paper, we concisely demonstrate the current development of SAR satellites and the principle of the InSAR technique, and then systematically review the advantages and disadvantages of a set of advanced InSAR techniques including InSAR stacking, small baseline subset InSAR (SBAS-InSAR), persistent scatterer InSAR (PS-InSAR), distributed scatterer InSAR (DS-InSAR) and split-bandwidth interferometry (SBI).On this basis, major challenges currently hampering InSAR applications (e.g., coherent loss, atmospheric distrubence, phase unwrapping errors, geometric distortions and multi-dimensional surface displacements) are investigated and their corresponding possible solutions are discussed. Then, we review the current status, particularly their limitations, of various typical InSAR applications under different scenarios such as earthquakes, volcanoes, landslides, ground subsidence, glaciers, infrastructure displacement monitoring, and atmospheric water vapour mapping. Finally, we present the outlook of InSAR, suggesting that with the continuous development of higher spatial resolution, higher temporal resolution and smaller SAR satellites, InSAR shall be applied to a number of new applications that cannot be achieved by traditional methods, bringing greater inspiration to the development of InSAR in China.


Publication metadata

Author(s): Li Z, Zhu W, Yu C, Zhang Q, Zhnag C, Liu Z, Zhang X, Chen B, Du J, Song C, Han B, Zhou J

Publication type: Review

Publication status: Published

Journal: Cehui Xuebao/Acta Geodaetica et Cartographica Sinica

Year: 2022

Volume: 51

Issue: 7

Pages: 1485-1519

Print publication date: 01/07/2022

Online publication date: 13/08/2022

Acceptance date: 01/07/2022

ISSN (print): 1001-1595

Publisher: SinoMaps Press

URL: http://xb.chinasmp.com/EN/10.11947/j.AGCS.2022.20220224

DOI: 10.11947/j.AGCS.2022.20220224


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