Satellite Constellations

China's global navigation satellite system, using a mix of medium-Earth, geostationary, and inclined geosynchronous orbits.

A commercial low-Earth-orbit constellation delivering rapid-revisit, high-cadence Earth imagery.

Europe's civil global navigation satellite system — owned by the EU and operated through EUSPA, with ESA as the design and procurement agent — offering high-accuracy positioning independent of GPS.

A low-Earth-orbit satellite-phone and data constellation serving voice, messaging, and IoT connectivity.

Russia's global navigation satellite system, providing worldwide positioning and timing from medium Earth orbit.

The United States' global navigation satellite system, providing worldwide positioning, navigation, and timing from medium Earth orbit.

The second-generation Iridium constellation of 66 cross-linked low-Earth-orbit satellites providing pole-to-pole voice and data coverage.

SES's medium-Earth-orbit broadband constellation delivering low-latency connectivity to telecom, maritime, and enterprise customers between the tropics and beyond.

A low-Earth-orbit broadband constellation providing global connectivity, focused on enterprise, government, and maritime users.

Planet Labs' fleet of shoebox-sized Dove CubeSats that image the entire land surface of the Earth daily at medium resolution.

SpaceX's low-Earth-orbit broadband internet constellation, the largest ever built, delivering global high-speed connectivity.