What free 10 m Sentinel-2 and Sentinel-1 imagery can and cannot show for the things OSINT analysts ask about: vehicles, buildings, ships, airfields, fires, floods and earthworks.
2026-10-04 · 7 min read
Pansharpening combines a high-resolution panchromatic band with lower-resolution multispectral bands to produce sharp, colorful satellite imagery. Covers Brovey, IHS, PCA, and Gram-Schmidt methods.
2026-01-13 · 8 min read
Sentinel and Landsat versus commercial optical and SAR imagery: resolution, revisit and cost compared, and when paying for imagery is worth it.
2025-12-22 · 8 min read
Spatial, spectral, temporal and radiometric resolution in remote sensing: what each means, typical values for common satellites, and the trade-offs.
2025-11-18 · 8 min read
Why you can't have both high spatial and high temporal resolution from a single satellite. Understand the trade-off, how constellations address it, and how to choose the right balance for your project.
2025-11-05 · 7 min read