System places powerful light sources on satellites to send coded signals for drones, self-driving cars, space missions to navigate.

Chinese researchers say they have built an 11-satellite network for a jam-resistant, high-accuracy optical navigation system, designed to provide positioning where GPS is unavailable or disrupted, from self-driving cars and drones to deep-space missions. Optical navigation has also been used in the ongoing US-Israeli war with Iran, helping drones developed by companies such as Asio Technologies and General Atomics operate in environments where GPS signals are jammed. While positioning systems…

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