Shulou(Shulou.com)11/24 Report--

CTOnews.com, September 21, China Aerospace Science and Technology Corporation said that the 300W Hall electric propulsion system developed by the Institute 502 of the Fifth Academy of Sciences has recently successfully completed the orbit raising mission of a low-orbit satellite, raising the orbit of a satellite by nearly 300km.

This is the first time that China has used electric propulsion system to complete the orbit transfer task of Leo satellites, and verified the orbit transfer capability of all-electric propulsion Leo constellation satellites. It is worth mentioning that the Hall electric propulsion system will also undertake other orbit control tasks of the satellite.

CTOnews.com Science Popularization: the common Internet constellations are mainly Leo constellations, which are often launched in batches. At the same time, due to the problem of carrying capacity, the orbit height of the satellite separated from the rocket is lower than that of the satellite target orbit, so the satellite needs to ascend orbit independently, and Hall electric propulsion system is the most widely used electric propulsion system in orbit.

At present, Apple iPhone 14 series and Huawei Mate 50 series have supported the satellite communication function. When the user is not within the range of the ground base station signal, the antenna of the mobile phone can connect to the satellite communication, ask for help through the custom short text, and support the satellite position sharing at the same time, which is of great significance in the field scene, emergency rescue and other fields.

Of course, the current Beidou satellite navigation system does not belong to the category of low-orbit satellites, but experts have previously said that one of the directions for China's Beidou upgrading is to introduce a low-orbit satellite enhancement system to further enhance the accuracy and availability of navigation.

The country has previously said that China plans to build a more ubiquitous, integrated and intelligent national positioning and navigation time service system by 2035, followed by a low-orbit satellite enhancement system, which is expected to build a high-precision network by 2025. At that time, the whole world will enjoy the service of Beidou.

Therefore, as the next generation of China's Beidou Satellite Navigation system (BDS), Leo satellite enhancement system will be one of the main development directions of Beidou IV system. Leo satellite enhancement system can provide more accurate and fast navigation and communication services for the ground, and navigation and communication are deeply integrated, and the construction cost is lower.

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