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Beyond the Spec Sheet

 Practical Guide to Earth Observation, Data Quality, Consistency and Calibration

Resolution, revisit, coverage and latency show what a satellite system can see and how often. They can’t show whether its measurements will stay accurate and comparable across satellites, spectral bands and years. This free guide adapts the NASA, ESA and USGS joint quality assessment framework into seven plain-language questions to ask any commercial optical data provider. The questions cover positional accuracy, cross-sensor comparability, sensor-level performance, spectral bands, calibration, uncertainty, and quality information for analytics and AI.

Inside, you’ll find:

• What each familiar specification does and doesn’t tell you
• The seven questions, with the evidence to look for on each
• How data quality priorities shift across agriculture, wildfire, coastal monitoring, mining, defense, insurance and AI
• A fillable checklist for comparing providers, and links to the primary sources