China's CGST announces 100 Gbps space-ground laser transmission

The advanced terminal was incorporated into the payload of a satellite (designated Jilin-1 02A02) launched in June 2023, Mrigakshi Dixit writes for Interesting Engineering.
Jan. 7, 2025
2 min read

CHANGCHUN, China - The race to establish satellite-to-ground laser communications is heating up. Recently, China achieved a major milestone, which puts it ahead of Elon Musk’s Starlink.

The nation successfully attained a 100 gigabit per second data transmission rate in satellite-to-ground laser communication. This unprecedented speed — ten times faster than their previous record — opens doors to a new era of space-based technologies, Mrigakshi Dixit writes for Interesting EngineeringContinue reading original article.

The Military & Aerospace Electronics take:

7 January 2025 - The South China Morning Post reports that Chang Guang Satellite Technology achieved the speed between a satellite and a mobile truck-based ground station.

“Musk’s Starlink has revealed its laser inter-satellite communication system but hasn’t deployed laser satellite-to-ground communication yet. We think they might have the technology, but we’ve already started large-scale deployment,” Wang Hanghang, the company’s head of laser communication ground station technology, told SCMP. “We plan to deploy these laser communication units across all satellites in the Jilin-1 constellation to improve their efficiency, with a goal of networking 300 satellites by 2027.”

Related: Demonstration of data transmission from a microsatellite by laser

Related: NASA's laser communications tech, science experiment safely in space

Jamie Whitney, Senior Editor
Military + Aerospace Electronics

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