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BeiDou Receivers: Difference between revisions
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Revision as of 11:00, 29 July 2011
| COMPASS | |
|---|---|
| Title | BeiDou Receivers |
| Author(s) | GMV. |
| Level | Basic |
| Year of Publication | 2011 |
The Compass Navigation Satellite System (CNSS), also named BeiDou-2, is China’s second-generation satellite navigation system that will be capable of providing positioning, navigation, and timing services to users on a continuous worldwide basis.
On November 2, 2006, China announced the 2nd generation Chinese navigation system, COMPASS[1]. The system is currently under development evolving from a regional system called BeiDou-1, and in the first phase will provide high-accuracy positioning services for users in China and its neighbouring regions. As of April 2011, eight satellites for Compass have been launched. According to an official report[2], " the eighth Beidou/Compass satellite marks the completion of basic function of Beidou (Compass) Navigation Satellite System " .
The long-term goal is to develop an independent global navigation satellite system similar to the GPS and GLONASS.[3]
COMPASS Receiver
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 user terminal capable of determining the user position, velocity and precise time (PVT) by processing the signal broadcasted by COMPASS satellites. It receives COMPASS navigation signals, determines pseudoranges (and other observables) and solves the navigation equations in order to obtain their coordinates. 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.[4] In June 2011, the test-beds for ground segment and also the test section of the user terminal development have been completed[5]. 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.[6]
For completeness, the main characteristics of COMPASS signals are shown in the following table and figure:[6]
Notes
References
- ^ COMPASS Navigation system in Wikipedia
- ^ China completes basic Beidou (Compass) Navigation Satellite System, 2011-04-10 by Globaltimes.cn
- ^ 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
- ^ Compass system 10 months to complete a comprehensive test covering the Asia Pacific region next year China news, 20th June 2011.
- ^ a b COMPASS Status Presentation, Munich Satellite Navigation Summit March 2011.