What requirement causes the satellite count to swell dramatically, contrasting with the small number needed for coverage sometime during 24 hours?

Answer

Uninterrupted, high-speed, low-latency access guaranteed at any second

The satellite count swells dramatically when the definition of coverage moves from passive availability to active, guaranteed service quality. If 'coverage' simply means a signal can reach a spot on Earth at some point during a 24-hour period, the required constellation size remains relatively small, especially in higher orbits. However, modern expectations for internet access demand uninterrupted, high-speed service with low latency guaranteed at any given second. Fulfilling this requirement necessitates significant spatial overlap between coverage footprints and managing the orbital dynamism of fast-moving satellites, compelling engineers to deploy dramatically larger constellations, especially in LEO, to ensure constant connectivity without any interruption between satellite handoffs.

What requirement causes the satellite count to swell dramatically, contrasting with the small number needed for coverage sometime during 24 hours?
satellitesconstellationorbital mechanicsearth coverage