en.Wedoany.com Reported - On July 31, it was learned from the China Satellite Navigation System Management Office that the BeiDou Navigation Satellite System has fully completed its in-orbit upgrade.
Xie Jun, chief chief designer of the BeiDou-3 satellites, revealed that China is planning and building the next-generation BeiDou system, which will significantly improve service accuracy, enabling high-precision positioning at the decimeter or even centimeter level. In the future, BeiDou will also provide navigation for space vehicles.
The upgrade was officially announced to commence in March this year, adopting a strategy of "phased implementation, satellite-by-satellite verification, and dynamic switching."
The upgrade focuses on multiple core areas, including enhancing inter-satellite link transmission efficiency, optimizing signal acquisition capabilities in complex environments, and strengthening system anti-interference performance. As a result, the BeiDou system has become the first among global navigation satellite systems to possess large-scale in-orbit software-defined and continuous evolution capabilities.
Currently, the number of BeiDou satellites in orbit has reached 50, with space signal accuracy better than 2 meters and global positioning accuracy better than 10 meters. Through precise point positioning services, high-precision positioning with horizontal accuracy better than 0.3 meters and vertical accuracy better than 0.6 meters can be achieved. Academic research shows that after this upgrade, the position dilution of precision (PDOP) at the worst-case global locations has been optimized.
The China Satellite Navigation System Management Office stated that, going forward, while ensuring stable operation, the system will enrich and develop new navigation technical means, provide more stable and reliable positioning, navigation, and timing services to global users, and strive to achieve the goal of building a more ubiquitous, more integrated, and more intelligent comprehensive spatiotemporal system by 2035.
