Chinese scientists finish Earth-Moon laser link

Chinese researchers successfully conducted a laser communication test between Earth and the Moon, establishing a high-speed, two-way communication link over a distance exceeding 400,000 kilometers. This type of communication is characterized by higher speeds, broader bandwidth, and greater security compared to traditional microwave communications. To achieve this, the team overcame challenges such as laser beam alignment, weak signals, and rapid data transfer, by developing precise correction techniques and advanced sensors. This effort resulted in connection rates of 1.25 Mbps for the uplink and 100 Mbps for the downlink. This achievement facilitates lunar exploration operations, especially with upcoming crewed landings, by providing a high-speed pathway for transmitting large volumes of data and scientific images. It marks a significant step forward in the development of space communication technology.

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