Recently, the launch of China Beidou Navigation Global Network was successfully completed. Among them, the high-stability composite microporous collimating glass material for spaceborne hydrogen atomic clock developed by ZGJC Glass Fiber Science and Technology Research Institute was once again mounted and applied.
As the "heart" of Beidou navigation and positioning system, the spaceborne atomic clock plays a decisive role in navigation accuracy and autonomous operation capability. According to the requirements of the supporting tasks, the R&D team of the Fiberglass Institute overcomes difficulties, breaks through a series of key technologies such as materials, structures, processes, and equipment, and successfully develops a new type of high-stability composite microporous collimating glass materials. Reliability and longevity play a key role, and are called "capillaries" on spaceborne atomic clocks.
Since the material was successfully developed in 2015, it has been used in many Beidou navigation satellites with excellent on-orbit performance. This time, with the re-entry of the 55th Beidou navigation satellite into the sky, it marks that ZGJC has reached a new level in the overall quality management and continuous support of composite microporous collimating glass materials.