120吉比特每秒，刷新中国纪录！

Core Viewpoint - China has achieved a significant breakthrough in high-speed star-ground laser communication, successfully conducting business application experiments with a transmission rate of 120 Gbps, marking a new record in the field [1][3]. Group 1: Technical Achievements - The experiment was conducted at the Xinjiang Tak County laser ground station, utilizing the AIRSAT-02 satellite developed by China Aerospace Science and Technology Corporation [3]. - The star-ground laser link established a rapid capture with a success rate exceeding 93%, maintaining stable communication for up to 108 seconds, validating the link's stability and data reliability at high speeds [3]. - The research team enhanced the satellite's original transmission capacity from 60 Gbps to 120 Gbps through "on-orbit software reconstruction" without modifying the satellite hardware [3][5]. Group 2: Advantages and Challenges - Star-ground laser communication offers significant advantages, including large bandwidth, strong anti-interference capabilities, and good confidentiality, making it an optimal solution for high-speed data transmission [3]. - However, practical applications face challenges such as satellite platform micro-vibrations and severe atmospheric turbulence, which must be overcome to achieve stable high-speed transmission [3][5]. Group 3: Future Prospects - The research team has addressed three core technical bottlenecks: optimizing real-time correction algorithms to stabilize light beam disturbances, applying advanced compensation techniques to reduce data error rates, and improving adaptive transmission strategies to maximize channel capacity [5]. - With ongoing operational validation, star-ground laser communication is expected to support future massive space data transmission, potentially breaking existing communication speed limits and becoming a key hub connecting space-based information networks with ground fiber networks [5].