If you wish to contribute or participate in the discussions about articles you are invited to contact the Editor
Other Regional Systems
| Other Regional | |
|---|---|
| Title | Other Regional Systems |
| Author(s) | GMV. |
| Level | Basic |
| Year of Publication | 2011 |
There are nowadays three regional navigation satellites systems under development: the japanase QZSS, the indian IRNSS and the chinese BeiDou. The first two are explained in dedicated articles and BeiDou system is going to be explained next.
BeiDou-1
BeiDou-1 is the chinese experimental regional navigation system to be expanded into the global COMPASS Navigation System.
COMPASS/BeiDou Logo
BeiDou-2
The initial phase of the COMPASS/BeiDou-2 system is the implementation a chinese regional system. By April 2011, this initial phase of COMPASS system has been completed with a constellation of 4 GEO satellites and 3 IGSO satellites. During 2011, the system is going to launch another 4 BeiDou Navigation Satellites, providing initial passive positioning navigation and timing services for the whole Asia-Pacific region, this will complete the BeiDou regional system by 2012.[1]
The list of BeiDou-2 satellites can be found in article COMPASS Space Segment. During 2011, the system is going to launch another 4 Beidou Navigation Satellites, providing for the whole Asia-Pacific region:[1]
- initial passive positioning navigation;
- timing service;
- and short message communication (120 Chinese characters per message) service.
The aim of the regional BeiDou system (completion expected by end of 2012) is to provide two types of services:[1]
- Open service: a free service for civilian users with positioning accuracy of within 10 metres, velocity accuracy of within 0.2 m/s and timing accuracy of within 20 nanoseconds;
- Authorized service:a licensed service with higher accuracy even in complex situations for authorised and military users only.
These services are available for the BeiDou coverage area, i.e. China and its neighbouring countries.
Notes