Satellite data for “Optical”
6 datasets with imagery relevant to Optical, from free open data to commercial high-resolution sources.
Sentinel-2 (Optical, Multispectral)
ESA / Copernicus
The optical satellite of ESA's Copernicus Earth-observation programme. Its 13-band multispectral data is the most widely used free source for vegetation indices (NDVI), water detection and land-cover analysis.
Sentinel-1 (SAR)
ESA / Copernicus
A C-band Synthetic Aperture Radar (SAR) that observes day or night and through any weather. It delivers stable data for ground deformation and flood detection where optical sensors cannot see.
Landsat 8/9 (Optical, Thermal IR)
NASA / USGS
The world's longest Earth-observation archive, running since 1972. Its 50-year time series is unmatched for long-term change analysis, and the thermal infrared band also captures land-surface temperature.
MODIS (Terra/Aqua)
NASA
A 36-band wide-swath sensor. Though coarse in resolution, it covers the entire globe almost daily and is the workhorse for large-scale vegetation, fire and ocean-color monitoring, with a rich set of standard products.
PlanetScope (3 m, near-daily)
Planet Labs PBC
A constellation of roughly 130 microsatellites images the entire land surface almost every day. Ideal when you cannot afford to miss any change—construction progress or anomaly detection on farmland.
WorldView Legion (30 cm-class, very high resolution)
Maxar Technologies
Best-in-class commercial 30 cm resolution. Individual vehicles and structures are identifiable, making it a fit for real-estate due diligence, insurance loss adjustment and critical-infrastructure monitoring.