Uncover the high-tech behind the scenes of the second lesson of "Tiangong Classroom": a "magpie bridge" between the space station and the earth

　　China News Service, Shanghai, March 23 (Reporter Zheng Yingying) The Chinese Space Station held the second space lecture on the afternoon of the 23rd, Beijing time. The content of the second class of "Tiangong Class" will be transmitted back to Earth from space about 400 kilometers away. , is not a simple matter, behind this is inseparable from the support of some high-tech aerospace equipment.

　　The reporter learned from the Eighth Academy of China Aerospace Science and Technology Corporation (abbreviated as the Eighth Academy) that the high-speed communication processor is one of the "sharp weapons" of space-earth communication. It builds an invisible "magpie bridge" between the Chinese space station and the earth, making the Chinese space station The images, voice data, and other payload user data can pass through this invisible "bridge" in real time and accurately and be transmitted to the earth.

Data map: The research and development team is conducting the lens calibration test Photo courtesy of the Eighth Academy of China Aerospace Science and Technology Corporation

　　"In the past, due to the limitation of technology, there was only one 'gut trail' for communication between the sky and the earth. Now, the communication between the Chinese space station and the ground is a real highway, and the image and voice data are all vehicles on this road." High-speed communication processing Zhu Haowen, the technical director of the device, said.

　　In the "Tiangong Classroom" lectures, the astronaut teachers communicated with the students on the ground, and it was inseparable from the space station voice processor developed by the Eighth Institute of Electronics.

According to reports, the voice processor can realize audio calls in the cabin, cabin, heaven and earth, and out of the Chinese space station, as well as between the core cabin and the Shenzhou spacecraft, and the real-time communication delay between heaven and earth is less than 1 second.

　　In addition, there are many kinds of cameras used in this "Tiangong Classroom" connection, including wide-angle directional cameras for monitoring the environment in the cabin, zoom pan-tilt cameras for detail monitoring, and portable wireless handheld cameras for live teaching.

Numerous camera positions, different viewing angles, and taking into account both distance and distance ensure the delicate and smooth picture quality of the whole process.

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