In modern warfare, knowing your exact location, speed, and time is crucial, powered by Positioning, Navigation, and Timing (PNT). India’s NavIC is struggling, with most satellites failing and only three still working, while China has built a three-layered triad of satellites, ground towers, and underground fibre networks, creating a far more resilient and hard-to-disrupt navigation system.
China’s Satellite Advantage
China’s push for a strong navigation system began after a missile exercise revealed its dependence on GPS, which caused errors. This led to the creation of BeiDou, China’s own satellite navigation network. Today, BeiDou has 56 satellites—almost double the U.S. GPS constellation—operating in three orbits: geostationary, inclined geosynchronous, and medium Earth orbit. This setup ensures constant coverage over China and beyond, even in cities with tall buildings or mountainous regions.
The system’s strength isn’t just in numbers. Its design makes it hard to disrupt. If some satellites are jammed or damaged, the rest continue functioning, providing uninterrupted navigation. This redundancy gives China a significant advantage in both civilian and military applications.
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China also shares BeiDou with allies like Pakistan, offering precise navigation and targeting data. In contrast, India depends solely on NavIC, which faces satellite failures and limited backup systems, making it far more vulnerable to disruptions in critical situations.
Ground Towers and Fibre Networks
China’s navigation system goes far beyond satellites. The second layer of its triad is eLoran, a modernized ground-based navigation system. These are powerful towers that broadcast low-frequency signals capable of traveling long distances. Unlike satellites, these signals can penetrate buildings, pass through mountains, and even reach shallow water, making them highly reliable in difficult terrains or during conflicts. China has built more than 20 eLoran stations across the country, ensuring its military can maintain accurate navigation even if satellites are jammed or disabled.
The third layer of China’s system is an underground fibre-optic timing network. Stretching over 20,000 kilometers, this network connects hundreds of timing stations and distributes extremely precise time signals. Since it operates entirely underground, it does not rely on satellites or radio waves, making it almost impossible to disrupt from outside the country.
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Multi-mode receivers in China can draw signals from all three layers—satellites, eLoran towers, and the fibre network—switching automatically to the most reliable source. This redundancy ensures uninterrupted navigation and timing even if one or two layers are compromised.
India, by contrast, has only six Loran-C stations along its coasts, covering narrow areas near ports. Upgrading them to eLoran has been slow, and there is no large-scale fibre network for timing. This heavy reliance on satellites leaves India far more vulnerable during conflicts or disruptions.
A Layered Approach vs. a Single Point of Failure
China’s navigation system is built with multiple layers of redundancy to ensure it keeps working under any circumstances. Satellites form the first layer of the navigation system, providing global coverage and allowing users to access accurate location data almost anywhere on land, at sea, or in the air. This wide-reaching coverage ensures China’s navigation system can maintain precise navigation for both civilian and military applications, even in remote or difficult-to-reach areas.
The second layer consists of ground-based eLoran towers, which provide regional backup for the navigation system if satellites are disrupted. These towers broadcast strong low-frequency signals that can penetrate buildings, mountains, and even shallow water, reaching places where satellite signals may be blocked. With more than 20 stations across the country, eLoran ensures the navigation system continues to function even if some satellites are jammed or damaged.
The third layer is an underground fibre-optic timing network that stretches thousands of kilometers. This network connects hundreds of timing stations and distributes extremely precise time signals without relying on satellites or radio waves. Being buried underground, it is nearly impossible to disrupt from outside the country, making it a highly reliable backbone for China’s navigation system.
India, by comparison, relies almost entirely on NavIC, which faces repeated satellite failures and delayed replacements. Without a large-scale ground or fibre network, its navigation system is vulnerable to disruptions, leaving both civilian and military operations at risk. China’s triad, with its multi-layered design, ensures continuous, reliable navigation that India currently cannot match.
