What are the components of the Beidou navigation system?
The Beidou system consists of three parts: the space segment, the operation control segment and the user segment: the Beidou-3 space segment consists of 30 satellites, including 3 geostationary orbit (GEO) satellites and 3 inclined geosynchronous orbit (GSO) satellites and 24 Medium Earth Orbit (MEO) satellites; the operation control section includes more than 30 ground stations such as main control stations, injection stations, and monitoring stations; the user section includes Beidou terminals, terminals compatible with other navigation systems, and related applications service system. The currently fully operational Beidou-2 system provides four services: authorized, public, wide-area differential (satellite-based enhancement) and short message. The positioning accuracy is better than 10 meters, the timing accuracy is better than 20 nanoseconds, and the speed measurement accuracy is per second. 0.2 meters.
signal jammer

What services can the Beidou-3 system provide?
The current BDS is the most complex system in GNSS. It is not only a transitional combination of the Beidou-2 regional system and the Beidou-3 global system, but also a complex constellation that integrates three orbit types: GEO, IGSO, and MEO. It also provides positioning, navigation, Satellite system for positioning, navigation and time (PNT) services and communication services. The satellite launched on April 23, 2019 is the 20th Beidou-3 networking satellite and the first IGSO satellite of Beidou-3. The satellite is networked with the 18 MEO satellites and 1 GEO satellite previously launched. In 2019, we will continue to launch 6 MEO, 2 GEO and 2 GSO satellites to realize the full constellation network of 30 Beidou-3 satellites and create conditions for the full provision of global services in 2020, when the Beidou-3 satellites in orbit will reach 30 satellites, including 3 GEO, 3 IGSO, and 24 MEO satellites, which is the largest constellation among the rated constellations in GNSS. The performance indicators of Beidou-3 global service are that the space signal ranging error is better than 0.5m, its positioning accuracy is 7m for single-frequency measurement, 3m for dual-frequency measurement, speed measurement accuracy is 0.2m/s, timing accuracy is 20ns. Availability is 99%. And its service performance in the Asia-Pacific region is significantly better than global performance.

What are the characteristics of the Beidou system compared with other GNSS?
The biggest feature of the Beidou-3 system compared with other GNSS is that it has regional short message communication services and global short message communication services, which other GNSS do not have. This is closely related to the development process of the Beidou system, because the Beidou system developed from the active system and continues to retain relevant characteristics. It is not only applied in Beidou 2, but also continues to Beidou 3. At the same time, Realizes regional and global short message communication services. For the same reason, Beidou-3 combines the global basic service system with the regional (satellite-based) enhancement system, thus becoming the most complex system in the world, with medium earth orbit (MEO), geostationary orbit (GEO) and tilted geosynchronous The combination of three orbital forms (GSO) has also become a pioneering exploration for future navigation and communication fusion satellites.qq



Kommentare zu "Different Questiones about Beidou navigation system"

Es sind noch keine Kommentare vorhanden

Kommentar schreiben

Möchten Sie dem Autor einen Kommentar hinterlassen? Dann Loggen Sie sich ein oder Registrieren Sie sich in unserem Netzwerk.