📊Key Insights at a Glance
📈 Resolution Keeps Getting Sharper (m, smaller = sharper)
💡 From ~2 m (KeyHole, 1960) → 0.8 m (IKONOS, 1999) → 0.31 m (WorldView-3, 2014) → 0.3 m (PNEO / SuperView Neo / Jilin Neo, 2021–2022).
🌅 1960–1998: Early exploration, meter-level breakthrough pending.
🏙️ 1999–2013: 1-m commercial era (IKONOS, QuickBird, GeoEye).
🎯 2014–2022: Sub-meter & 0.3-m ultra-high era (WV-3/4, GF-7, Neo).
🌍 Satellites by Country
🏆 Ultra-high (≤0.5 m): WorldView-1/2/3/4, GeoEye-1, Pleiades, SuperView, PNEO, SuperView Neo, Jilin Neo.
🗺️ Workhorse (1–2.5 m): SPOT-5/6, ALOS, ZY-3, GF-1/6, CB04A — ideal for mapping & wide-area monitoring.
🗺️ Workhorse (1–2.5 m): SPOT-5/6, ALOS, ZY-3, GF-1/6, CB04A — ideal for mapping & wide-area monitoring.