How GPS Works Without Internet 🤯 | Google Maps Engineering Explained

追加: 2026-05-06

GPS (Global Positioning System) uses a network of 31 satellites orbiting at 20,000km altitude to determine location through trilateration, where a phone's GPS chip receives radio signals from 4+ satellites simultaneously, calculates distance to each satellite using signal delay, and determines exact coordinates by finding the intersection of these distances; this process is completely independent of internet connectivity.