- Science and Technology- developments and their applications and effects in everyday life Achievements of Indians in science & technology; indigenization of technology and developing new technology.
BeiDou Navigation Satellite System (BDS)
What to study?
- For Prelims: About various Navigation satellite systems.
- For Mains: Significance of BDS and the need for regional secured navigation systems.
Context: China’s BeiDou Navigation Satellite System (BDS), touted as a rival to the widely-used American GPS, has started providing global services.
- The positioning accuracy of the system has reached 10 metres globally and five metres in the Asia-Pacific region. Its velocity accuracy is 0.2 metres per second, while its timing accuracy stands at 20 nanoseconds.
- Pakistan has become the first country to use the BeiDou system ending its reliance on the Global Positioning System (GPS).
It will be the fourth global satellite navigation system after the US GPS, Russia’s GLONASS and the European Union’s Galileo.
About BeiDou Satellite System:
Named after the Chinese term for Big Dipper, the BeiDou system started providing independent services over China in 2000. It is being projected by Beijing as a rival to the American Global Positioning System (GPS).
- The full constellation is scheduled to comprise 35 satellites.
- BeiDou has two separate constellations, BeiDou-1 and BeiDou-2. BeiDou-1 also known as first generation was a constellation of three satellites.
- BeiDou-2, also known as COMPASS, is the second generation of the system. It became operational in the year 2011.
What are the various GNSS systems?
The four global GNSS systems are – GPS (US), GLONASS (Russia), Galileo (EU), BeiDou (China). Additionally, there are two regional systems – QZSS (Japan) and IRNSS or NavIC (India).
Sources: the hindu.