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BeiDou User Segment
| COMPASS | |
|---|---|
| Title | BeiDou User Segment |
| Author(s) | GMV. |
| Level | Basic |
| Year of Publication | 2011 |
The Compass Navigation Satellite System (CNSS), or BeiDou-2, is China’s second-generation satellite navigation system capable of providing continuous, real-time passive 3D geo-spatial positioning and speed measurement. The system will initially used to provide high-accuracy positioning services for users in China and its neighbouring regions, covering an area of about 120 degrees longitude in the Northern Hemisphere. The long-term goal is to develop an independent global navigation satellite network similar to the GPS and GLONASS. [1]
COMPASS Arquitecture
The COMPASS User Segment consists of COMPASS/Beidou user terminals, which receive Compass navigation signals, determine pseudoranges (and other observables) and solve the navigation equations in order to obtain their coordinates. A COMPASS Receiver is a device capable of determining the user position, velocity and precise time (PVT) by processing the signal broadcasted by Galileo satellites. Any navigation solution provided by a GNSS Receiver is based on the computation of its distance to a set of satellites, by means of extracting the propagation time of the incoming signals traveling through space at the speed of light, according to the satellite and receiver local clocks.[2]
There is also an international cooperation in terms of Compatibility and Interoperability between BeiDou and other GNSSs, that will lead to interoperable terminals compatible with other GNSSs.[3]
Applications
GNSS applications are all those applications that use a GNSS signals to collect position, velocity and time information to be used by the application. For instance, the position and velocity provided by a COMPASS user terminal may be used for different kinds of applications (civil, military, scientific) such as:[3]
- Fishery: Fishermen safety of life, Oceanic and economic security, Protection of marine resources and sovereignty.
- Disaster Prevention and Mitigation: improvement of rescue response and decision-making capability due to rapid and timely disaster alert, rescue command scheduling and rapid emergency communication.
- Timing: Beidou/GPS multi-mode time synchronization devices with embedded Beidou/GPS timing module.
- Transportation.
- Water conservancy.
- Meteorology.
- Forest Fire Prevention.
- Soil Monitoring.
- Coal Mine Safety Monitoring.
Notes
References
- ^ Compass on the Chinese Defence Today website
- ^ J. Sanz Subirana, JM. Juan Zornoza and M. Hernández-Pajares, Global Navigation Satellite Systems: Volume I: Fundamentals and Algorithms
- ^ a b COMPASS Status Presentation, Munich Satellite Navigation Summit March 2011.