technical
4 articlesGeoTIFF and Cloud-Optimized GeoTIFF: What's the Difference and Why It Matters
Cloud-Optimized GeoTIFF (COG) is becoming the standard for satellite data distribution, but many users don't understand what makes it different from a regular GeoTIFF. This post explains the internal structure, performance benefits, and practical implications.
2026-02-05 · 6 min read
VV, VH, HH, HV: SAR Polarization Demystified
SAR polarization modes determine what you see in radar imagery. This post explains the physics behind polarization, why Sentinel-1 uses VV and VH, and how to choose the right polarization for your application.
2026-01-31 · 6 min read
Sentinel-1 GRD vs RTC: Which SAR Product Should You Use?
Sentinel-1 data comes in multiple processing levels. GRD is the standard product, while RTC corrects for terrain effects. This guide explains the differences and when each product is the right choice.
2025-07-31 · 6 min read
Geological Mapping from Space: Iron Oxide and Clay Mineral Detection with Sentinel-2
SWIR bands on Sentinel-2 can detect mineral absorption features invisible to the naked eye. This guide covers iron oxide and clay indices for geological exploration and environmental assessment.
2025-07-25 · 5 min read