# GPS, Galileo, BeiDou: the satellite navigation systems that position the world > Four global satellite constellations compete to position phones, ships, and weapons, while jamming and spoofing have made signal integrity a front-line security question. **Meta:** type: reference · date: 2026-07-03 · heads: · 5 takes · 3 lenses · 4 regions ## What it is Positioning, Navigation, and Timing (PNT) is the infrastructure that tells every phone, ship, aircraft, and power grid exactly where it is and what time it is. Four global satellite systems do this: the United States' GPS, the European Union's Galileo, China's BeiDou, and Russia's GLONASS. All four broadcast L-band radio signals from medium-Earth orbit; a receiver triangulates a position by measuring time-of-arrival from at least four satellites. The signals are faint and unencrypted on their civilian channels, which makes them easy to jam, by overpowering with noise, or to spoof, by transmitting fake signals that shift a receiver's apparent location. That vulnerability is why this beat matters to a world-news reader: the same conflict that fires a missile often also switches on a jammer, and the consequences reach commercial aviation, maritime trade, and financial settlements. ## History GPS (formally NAVSTAR) was declared fully operational in 1994, after two decades of US Department of Defense development. Washington turned off Selective Availability in 2000, giving civilian users worldwide the same freely accessible signal. The EU launched Galileo's initial services in December 2016 and reached full operational capability in 2019. China completed its third-generation BeiDou-3 global constellation in July 2020. Until around 2015, GPS had no serious competition for global accuracy or adoption. By 2022, China's BeiDou white paper reported the system embedded in more than 2 billion devices across more than 140 countries. By 2025, a US government advisory board bluntly assessed GPS capabilities as "substantially inferior" to BeiDou. ## Current state As of mid-2026, GNSS interference is a constant feature of active conflict zones. Russia runs antennae near Kaliningrad and the Kola Peninsula that Lithuania counts at 36, up from 3 in early 2025, disrupting roughly 40 percent of European air traffic. Iran and Israel both deployed electronic warfare across the Strait of Hormuz, affecting as many as 970 ships per day at peak. The ITU, ICAO, and IMO issued a joint statement in March 2025 calling GNSS interference a global threat to civil aviation, maritime safety, financial systems, and disaster response. On the constellation side, the EU began Galileo Gen-2 launches in 2026. The 12 new satellites carry fully digital payloads, inter-satellite links, and electric propulsion. Galileo's High Accuracy Service already delivers roughly 20 centimetres of horizontal accuracy at no charge. China is running an in-orbit refit of BeiDou, replacing older satellites with third-generation models and consolidating the active constellation to 37. Both China and the EU are courting Global South adoption to expand their systems' strategic reach. ## Relationships The three roster subjects are linked by the threat they share and the race they run. GPS jamming ([across European and Middle Eastern airspace](/ja/n/gps-jamming-aviation-2026)) is the attack vector that makes resilient PNT a security necessity, driving demand for multi-constellation receivers that fall back to Galileo or BeiDou when GPS is degraded. [Galileo and BeiDou](/ja/n/galileo-beidou-pnt-2026) represent competing answers to the same question: which non-US system should the world trust? The EU frames Galileo as a civilian, rules-based alternative tied to European strategic autonomy. China frames BeiDou as infrastructure, embedded in Belt and Road projects across Asia, Africa, and Latin America. Both treat GPS jamming as validation of the case for their own systems. ## What to watch - Whether the first Galileo Gen-2 satellites reach operational status before 2027, and what anti-jam features they bring to the EU's encrypted Public Regulated Service. - BeiDou's adoption trajectory in Africa, Southeast Asia, and Latin America, where China is bundling the system into infrastructure packages. - US funding decisions on LEO-PNT, a proposed low-Earth orbit timing layer that would be far harder to jam than medium-orbit signals. - Any GNSS disruption linked to a documented aviation or maritime accident that forces regulatory action. ## Regional takes (batched by bias / lens) ### official record - **GPS.gov (US Space Force / NCO)** (United States, en) — The US government's official GPS programme site, operated by the US Space Force and the National Coordination Office for Space-Based PNT, documenting system architecture, performance standards, civil and military service tiers, and policy. Source: https://www.gps.gov/ - **EUSPA (EU Agency for the Space Programme)** (Europe, en) — EUSPA's authoritative overview of Galileo: governance, services including the 20-cm High Accuracy Service and emergency warning capability, and the agency's role as service operator for the EU's global navigation system. Source: https://www.euspa.europa.eu/eu-space-programme/galileo - **State Council Information Office of China** (China, en) — November 2022 Chinese government white paper on BDS-3 full global operations: three-generation development history, performance specifications, and Beijing's stated goals for international adoption across more than 140 countries. Source: https://english.www.gov.cn/archive/whitepaper/202211/04/content_WS63647de9c6d0a757729e249d.html ### official UN statement - **ITU / ICAO / IMO** (Global, en) — March 2025 joint statement by the ITU, ICAO, and IMO calling GNSS jamming and spoofing a global threat to aviation, maritime safety, financial systems, and disaster response, with a five-point member-state action plan. Source: https://www.itu.int/hub/2025/03/un-agencies-warn-of-satellite-navigation-jamming-and-spoofing/ ### GNSS engineering press - **Inside GNSS** (United States, en) — April 2026 coverage of the Secure World Foundation's Global Counterspace Capabilities review, documenting Baltic escalation, the Iran-Israel Hormuz disruption affecting 970 ships per day, and formal ICAO and ITU condemnations of Russia and North Korea. Source: https://insidegnss.com/gnss-interference-now-a-constant-of-modern-conflict-swf-annual-report-finds/ ## Across the graph - Related: [[gps-jamming-aviation-2026]], [[galileo-beidou-pnt-2026]] - Entities: Gps Jamming, Beidou, Galileo --- Canonical: https://rbtfl.xyz/ja/n/space-navigation-pnt-backgrounder