LEO Testing: Essential Simulation for GNSS and Alternative PNT Signals

Why LEO Changes the Testing Equation

Low Earth orbit (LEO) is reshaping the future of positioning, navigation and timing (PNT). From satellite constellations and non-terrestrial networks to new PNT services and space-qualified receivers, the shift toward LEO introduces new opportunities – and new challenges.

LEO satellites operate closer to Earth than their medium Earth orbit (MEO) counterparts, move faster, and require significantly larger constellations to achieve global coverage. That changes everything – from orbital modelling to signal behavior to how performance should be validated. Relying on legacy assumptions, models, and methods is not enough.