Our navigation systems sound pretty confident telling us where to go, but what if they are confidently wrong? It turns out that satellite signals can be fooled, either jammed into silence or spoofed with convincing fakes.
A new initiative in China’s transportation sector aims to tackle this vulnerability by turning millions of existing navigation terminals into a distributed network for detecting and responding to interference, without requiring hardware upgrades.
The details were published in the Journal of Highway and Transportation Research and Development (English Edition) on Sep. 30.
Out of sight, out of mind. Many of us hardly think about the satellites orbiting thousands of kilometers above Earth until our navigation signals disappear and the map on our screens stops working.
Global navigation satellite systems (GNSS), including China’s BeiDou, the United States’ Global Positioning System (GPS), the European Union’s Galileo, and Russia’s GLONASS, provide positioning, navigation and timing information essential to transportation and many other civilian applications worldwide.
Their signals, however, are unfortunately fragile.
“Civil GNSS signals arrive at Earth’s surface at extremely low power, rendering them vulnerable to jamming and spoofing,” said Zhang Bingqi, research fellow at the Research Institute of Highway, Ministry of Transport (RIOH), and lead author of the study.
Jamming overwhelms legitimate signals, preventing receivers from determining their positions. Spoofing is more deceptive: counterfeit signals trick receivers into calculating false positions or times, potentially without users noticing.
“One of our engineers suggested that if navigation signals are the ‘eyes’ of the transportation system, jamming and spoofing either blindfold those eyes or fit them with ‘VR goggles’ — you think you are on the road when you may already have drifted off course,” Zhang said.
The cost of preventing such harmful interference can be exorbitant. Equipping hundreds of millions of existing terminals with specialized anti-interference hardware would require substantial investment.
Taking a different route, RIOH launched the Action Plan for Satellite Navigation Security Applications in Transportation on August 27, 2026, bringing together more than 70 organizations, including transportation users, chip and module manufacturers, research institutions, terminal makers and service providers.
“The central idea is collaborative, platform-based protection: a standards system encompassing the entire ‘chip/module — terminal — platform’ chain enables existing mass-market terminals to gain protection with no hardware modification,” Zhang said.
At the heart of the initiative is the BeiDou Security Service Platform for Transportation. When terminals detect suspicious signals, they can report anomalies to the platform. By comparing reports from multiple devices, the system aims to identify interference sources, map affected areas and issue targeted alerts.
In effect, individual terminals become sentinels. Each contributes observations that, when combined, can help reveal interference across a wider region.
The platform is also designed to provide assisted positioning, navigation message authentication and interference data sharing, helping users and authorities respond to threats and assess their potential impact.
For this network to function, equipment from different manufacturers must be able to communicate. The action plan therefore establishes a three-tier standards framework covering data formats, communication between terminals and platforms, and data sharing between platforms.
Next steps include improving interference-detection technologies, extending services to existing terminals, expanding regional monitoring and completing the standards framework while promoting international adoption.
With the world becoming ever more connected and therefore ever more susceptible to disruption, navigation security is more than a technical issue; it is a matter of infrastructure security. The initiative offers a promising, economical approach to meeting this security demand.
“We hope to provide a ‘sensing web’ woven from tens of millions of terminals, standing guard over the faint signals beamed down from 20,000 kilometers above,” Zhang said.
D OI Link:
https://doi.org/10.26599/HTRD.2026.9480112
Journal of Highway and Transportation Research and Development (English Edition)
70 Organizations join forces to fit BeiDou Navigation with a “Safety Valve”: Amid a global surge in GNSS jamming and spoofing, RIOH launches its first end-to-end protection action plan
30-Sep-2026