China has achieved a breakthrough in space communications technology with the successful test of satellite-to-ground laser transmission at a speed of 100Gbps in December 2024. So, what should you know about it?
For your information, through the Jilin-1 Platform 02A02 satellite, the system overcomes traditional radio communications by leveraging focused light beams for faster and more efficient data transmission. This innovation, the result of two years of research, overcomes challenges such as atmospheric interference and relative satellite motion, using technologies such as atmospheric channel compensation, Doppler shift correction, and high-precision beam tracking. Mobile ground stations also played a key role in these tests.
In addition, this technology offers broad applications, including high-resolution remote sensing for disaster monitoring, urban planning, and environmental protection. China also plans to expand the Jilin-1 constellation to 300 satellites by 2027, expanding its high-speed optical data network.
Moreover, with the potential to support the development of smart cities and autonomous vehicle navigation, this system lays the foundation for 6G generation satellite internet. This achievement not only demonstrates China's technological prowess but also strengthens its position in the global space race. But, it's not just China that is pursuing this technology. Other countries, such as the US and France, are also actively developing this technology. For example, NASA's TBIRD system achieved a transmission record of 200Gbps in 2023.
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