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Home Academy Satellite Missions 101 Weather sats vs EO sats
LESSON 04 OF 6

Weather sats vs EO sats

Beginner ~9 min Slide deck Free

Both orbit Earth and both take images — but weather and EO satellites have fundamentally different measurement goals, orbit strategies, and refresh rates.

Both orbit Earth and both take images — but weather and EO satellites have fundamentally different measurement goals, orbit strategies, and refresh rates.

What this lesson covers

What Each Actually Measures

The instruments on weather and EO satellites are optimised for very different physical quantities.

Why Both Types Appear in Your Tracking View

Weather and EO satellites are among the most frequently tracked objects in the catalog.

Key facts

💡Landsat 9 measures 11 spectral bands including thermal infrared — it can detect surface temperature changes of less than 0.3°C, enabling urban heat island mapping.
💡The Copernicus programme operates Sentinel-1, 2, 3, 5, and 6 — covering SAR, optical, ocean, atmospheric, and altimetry EO from a single multi-mission framework.
Weather = continuous dynamics. EO = detailed surface insight.

Both mission families are critical infrastructure. Weather sats are never switched off — always watching. EO sats are tasked against specific targets and build their value through repeated consistent passes over time.

All lessons in Satellite Missions 101
01Comms vs EO vs science vs nav~9 min02Why some look stationary~9 min03Optical vs radar imaging~10 min04Weather sats vs EO sats~9 min05Signals intelligence~9 min06Lifetime + why things fail~9 min
← Optical vs radar imagingAll 6 LessonsSignals intelligence →
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