China’s space station will use its own active hydrogen atomic clock
Recently, the 203 self-developed space active hydrogen atomic clocks of the China Aerospace Science and Industry Corporation's Second Institute won the first prize in China’s manned space astronomical space clock project. In the future, it will be used in China’s space station project and will be completed around 2022. emission.
It is reported that the space atomic clock project is one of the most difficult and complex projects in China’s manned space project. The project will establish a time-frequency laboratory in outer space to verify related scientific experiments that cannot be completed on the Earth’s surface, such as Einstein’s broad sense. Relativity and so on. The project uses the Shuguang clock, the gong fountain clock, and the active hydrogen atomic clock to form the space atomic clock bell group. The active hydrogen clock will be used as the core load and run without interruption for a long time.
According to experts, China will conduct time comparisons within a wider space. The system generates high-accuracy, high-stability time-frequency signals that will enhance China's Beidou navigation system. The active hydrogen atomic clock is the atomic clock with the highest short-term index in the atomic clock that can be maturely applied.
203 independently developed and designed space active hydrogen atomic clock, using storage and loading separation technology to achieve high reliability, miniaturization of the cavity and achieve process optimization. The overall weight of the finished product prototype is about 40 kilograms, the volume is one-fifth that of traditional active hydrogen, and the technical indicators have reached the domestic leading level.
Zhou Tiezhong, the person in charge of the project, said that in the future, the 203 will carry out engineering design and further strengthen the reliability of products to meet the requirements of the space environment. The autonomous development of the space-active hydrogen clock will contribute to the construction of China's space atomic clock project.
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