Monitor, Measure & Mitigate: Integrated Solutions for Geohazard Risk

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Geohazards such as slope instability, erosion, settlement, or seepage pose ongoing risks to critical infrastructure. Roads, railways, pipelines, and utility corridors are especially vulnerable to these natural and human-influenced processes, which can evolve silently until sudden failure occurs. Traditional ground surveys provide only periodic... Read More >

Geo Sessions 2025: Geospatial Vision Beyond the Map

8/5/2025

Lidar, SAR, and Spectral: Geospatial Innovation on the Horizon Last year, Geo Sessions brought together over 5,300 registrants from 159 countries, with attendees representing education, government agencies, consulting, and top geospatial companies like Esri, NOAA, Airbus, Planet, and USGS. At this year's Geo Sessions, NV5 is... Read More >

Not All Supernovae Are Created Equal: Rethinking the Universe’s Measuring Tools

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Rethinking the Reliability of Type 1a Supernovae How do astronomers measure the universe? It all starts with distance. From gauging the size of a galaxy to calculating how fast the universe is expanding, measuring cosmic distances is essential to understanding everything in the sky. For nearby stars, astronomers use... Read More >

Using LLMs To Research Remote Sensing Software: Helpful, but Incomplete

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Down (The Rabbit Hole) We Go!

ENVI SARscape Analytics: Persistent Scatterers

Megan Gallagher Tuesday, March 17, 2020

This blog is the third in a series that highlights one of the easy-to-use tools in the new ENVI SARscape Analytics (Persistent Scatterers). The first two blogs in this series featured videos about the Flood Mapping tool as well as the Time Series tool. ENVI SARscape Analytics was designed to make it quick and easy for those that may not be SAR experts to utilize SAR data for some of the most common applications.

This video focuses on the Persistent Scatterers tool. Persistent Scatterers uses time-series analysis to measure and monitor displacements of the Earth's surface over time. This tool is great at tracking changes at millimeter scale accuracies and finding areas where ground surface deformation has occurred. Many things can cause land deformation such as oil & gas and mining operations, or natural disasters like earthquakes, volcanoes, and landslides. Persistent Scatterers works best in urban environments, or rock face, which makes it a unique indicator of subterranean change in areas of high human population.