The BeiDou Navigation Satellite System (BeiDou; ) is a Chinese satellite navigation system. It consists of two separate satellite constellations. The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System and also known as BeiDou-1, consisted of three satellites which, beginning in 2000, offered limited coverage and navigation services, mainly for users in China and neighboring regions. BeiDou-1 was decommissioned at the end of 2012.
The second generation of the system, officially called the BeiDou Navigation Satellite System (BDS) and also known as COMPASS or BeiDou-2, became operational in China in December 2011 with a partial constellation of 10 satellites in orbit. Since December 2012, it has been offering services to customers in the Asia-Pacific region. Within the region, BeiDou is more accurate than GPS.
In 2015, China launched the third generation BeiDou system (BeiDou-3) for global coverage. The first BDS-3 satellite was launched on 30 March 2015. On 27 December 2018, BeiDou Navigation Satellite System started providing global services. The 35th and the final satellite of BDS-3 was launched into orbit on 23 June 2020. It was said in 2016 that BeiDou-3 will reach millimeter-level accuracy (with post-processing). On 23 June 2020, the latest BeiDou satellite was successfully launched marking the launch of the 55th satellite in the Beidou family. The third iteration of the Beidou Navigation Satellite System provides full global coverage for timing and navigation, offering an alternative to Russia's GLONASS, the European Galileo positioning system, and the US's GPS.
According to China Daily, in 2015, fifteen years after the satellite system was launched, it was generating a turnover of 31.5billionperannumformajorcompaniessuchasChinaAerospaceScienceandIndustryCorporation,AutoNaviHoldingsLtd.,andChinaNorthIndustriesGroupCorp.Theindustryhasgrownanaverageofover2064 billion in 2020 according to Xinhua citing data.
This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.
All fundamental principles behind modern satellite positioning to acquire, track and evaluate direct and indirect satellite signals and process them in relation to example applications: Earth monito
Bases des références géodésiques, principe de mesure utilisé en localisation par satellites et de l'estimation de la qualité de positions GNSS (Global Navigation Satellites Systems).
The BeiDou Navigation Satellite System (BeiDou; ) is a Chinese satellite navigation system. It consists of two separate satellite constellations. The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System and also known as BeiDou-1, consisted of three satellites which, beginning in 2000, offered limited coverage and navigation services, mainly for users in China and neighboring regions. BeiDou-1 was decommissioned at the end of 2012.
A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system (GNSS). , four global systems are operational: the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), China's BeiDou Navigation Satellite System, and the European Union's Galileo.
A satellite constellation is a group of artificial satellites working together as a system. Unlike a single satellite, a constellation can provide permanent global or near-global coverage, such that at any time everywhere on Earth at least one satellite is visible. Satellites are typically placed in sets of complementary orbital planes and connect to globally distributed ground stations. They may also use inter-satellite communication.
Explores Binary Offset Carrier (BOC) modulation in satellite positioning systems like GPS and Galileo, covering signal characteristics, propagation delay, Doppler shift, and modulation techniques.