Entering a New Era of InSAR: Advanced Techniques and Emerging Applications

doi:10.11947/j.JGGS.2022.0101

Abstract

Abstract:

Interferometry Synthetic Aperture Radar (InSAR) provides unique capabilities to map regional/global topography and deformation of the Earth’s surface and has led to a broad spectrum of deformation monitoring applications. In order to adapt to various challenging monitoring environments, researchers have made tremendous innovations to deal with issues such as atmospheric and ionospheric effects, loss of coherence due to large displacements, geometric distortions and unwrapping errors. Owing to recent technical and methodological advances, the Earth’s surface deformation, ranging from earthquake ruptures, volcanic eruptions, landslides, glaciers, to groundwater storage variations, mining subsidence and infrastructure instability can now be mapped anywhere in the world at high spatial and temporal resolutions. This special issue received a set of contributions highlighting recent advances in methodologies and applications of InSAR to ground deformation monitoring. We aim to present overviews of both the state of the art of SAR/InSAR techniques and the next generation of applications across the broad range of deformation monitoring applications.

Key words: InSAR; deformation monitoring; ionospheric correction; DEM generation; earthquake; land subsidence

Zhenhong LI,Chen YU,Ruya XIAO,Wu ZHU. Entering a New Era of InSAR: Advanced Techniques and Emerging Applications[J]. Journal of Geodesy and Geoinformation Science, 2022, 5(1): 1-4.

Figures/Tables 1

References 22

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SAR missions	Operation Periods	Band	Resolution (mode-dependent)	Repeat cycle (constellation)	Country	Data policy	Type
PAZ	2018—	X	<1~16m	11 days	Spain	Commercial	Regular
ICEYE	2018—	X	up to 25cm	Up to daily or sub-daily	Finland	Commercial	Micro-satellite
CHAOHU-1	2022—	C	1~20m	Up to daily	China	Commercial	Micro-satellite
LT-1A/B	2022—	L	3~30m	4/8 days	China	Scientific	Regular
NISAR	Planed 2023	L/S	3~10m	12 days	US/India	Scientific	Regular