Foreign Media: China Establishes 11-Satellite Optical Navigation Network with Anti-Jamming Accuracy Exceeding GPS
A research team from Tsinghua University has announced the completion of a high-precision, anti-jamming optical navigation system composed of 11 satellites, designed to provide accurate positioning when GPS signals are lost or under interference. Applications include autonomous vehicles, drones, and deep-space exploration missions.
Differing from GPS and BeiDou, which rely on radio waves, this system transmits encoded optical signals to the ground using powerful light sources mounted on satellites. Ground receivers determine their coordinates by detecting the direction of the light beam and combining it with the known positions of the satellites. Since optical beams are narrow and travel in straight lines, they are much harder to interfere with than radio signals. Compared to star-based navigation that depends on faint, fixed starlight, this method significantly improves positioning accuracy.
Notably, optical navigation technology has already been deployed in real combat scenarios during the ongoing U.S.-Israel military operations against Iran, enabling drones developed by companies such as Asio Technologies and General Atomics to operate normally even when GPS signals are jammed.
Original Source: toutiao.com/article/1861102466632970/
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