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

6/3/2025

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

5/26/2025

Whether you’re new to remote sensing or a seasoned expert, there is no doubt that large language models (LLMs) like OpenAI’s ChatGPT or Google’s Gemini can be incredibly useful in many aspects of research. From exploring the electromagnetic spectrum to creating object detection models using the latest deep learning... Read More >

From Image to Insight: How GEOINT Automation Is Changing the Speed of Decision-Making

4/28/2025

When every second counts, the ability to process geospatial data rapidly and accurately isn’t just helpful, it’s critical. Geospatial Intelligence (GEOINT) has always played a pivotal role in defense, security, and disaster response. But in high-tempo operations, traditional workflows are no longer fast enough. Analysts are... Read More >

Thermal Infrared Echoes: Illuminating the Last Gasp of a Dying Star

4/24/2025

This blog was written by Eli Dwek, Emeritus, NASA Goddard Space Flight Center, Greenbelt, MD and Research Fellow, Center for Astrophysics, Harvard & Smithsonian, Cambridge, MA. It is the fifth blog in a series showcasing our IDL® Fellows program which supports passionate retired IDL users who may need support to continue their work... Read More >

A New Era of Hyperspectral Imaging with ENVI® and Wyvern’s Open Data Program

2/25/2025

This blog was written in collaboration with Adam O’Connor from Wyvern. As hyperspectral imaging (HSI) continues to grow in importance, access to high-quality satellite data is key to unlocking new insights in environmental monitoring, agriculture, forestry, mining, security, energy infrastructure management, and more.... Read More >

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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.