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SkyGeo | Decision-Grade InSAR Ground-Motion Monitoring
InSAR: What is it and what is it for?
The SkyGeo InSAR Academy
InSAR Viewer
Glossary
FAQ
Permian Basin Subscription Service
Underground gas storage
Sustainability Leadership with InSAR
Predictive Maintenance in Civil Engineering
Energy
Mining
Civil Engineering
Customer cases
Blog
Ultimate guide to Using InSAR
Scientific Papers
Events
Leadership Team
News
Careers at SkyGeo
English
CONTACT US
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InSAR Fundamentals Steve McLay 10/21/25 InSAR Fundamentals Steve McLay 10/21/25

What is persistent scatterer interferometry (PSI)?

Persistent scatterer interferometry (PSI) tracks stable radar targets across many satellite images to measure slow ground movement with high precision.

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