Chinese researchers have developed an 11-satellite network for optical navigation, providing positioning where GPS is unavailable or disrupted. This technology has been used in drone operations in environments with jammed GPS signals.

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...