Interferometry Concepts

This is a guide to the major concepts needed to understand SAR interferometry. Other sources of information can be found at ASF-STEP's main page or our interferometry page.

• Interferogram, our purpose here.
• Baseline, the distance between satellites.
• Coherence, a property of an interferogram.
• Phase, the interesting part of an interferogram.
• Phase Unwrapping, to extract useful information from phase.
• How SAR Sees
• Slant and Ground Range, SAR geometry.
• DEM, a Digital Elevation Model.

Back to interferometry main page Last Updated: September 1, 1998
If you have any questions, please feel free to email olawlor@acm.org