Global Navigation Satellite System (GNSS)
US GPS
Russian GLONASS
China BDS
EU Galileo
Regional Navigation Satellite System (RNSS)
Japan Quasi-Zenith Satellite System (QZSS)
India NAVIC
Global Positioning System (GPS) is a navigation and tracking system that uses satellite conections and radio waves. This system can compute the exact geographic coordonates of a object or person on the surface of the earth as long as it has a device that contains a GPS receptor.
Assisted Global Positioning System (AGPS or A-GPS) is a system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a GPS satellite-based positioning system. A-GPS is extensively used with GPS-capable cellular phones.
Location-Based Service (LBS) is a tracking system that uses mobile phone signal. The tracking is done by using GSM cell towers of local mobile phone service providers. Tracking through LBS is less precise when compared to GPS because the device estimates its position in the area of the cell tower.
GLONASS or "Global Navigation Satellite System", is a space-based satellite navigation system operating in the radionavigation-satellite service. It provides an alternative to GPS and is the second navigational system in operation with global coverage and of comparable precision.
中国北斗卫星导航系统 BeiDou Navigation Satellite System (BDS) BeiDou-3 will eventually consist of 35 satellites and is expected to provide global services upon completion in 2020. When fully completed, BeiDou will provide an alternative global navigation satellite system to the United States owned Global Positioning System (GPS), and is expected to be more accurate than the GPS.
Galileo is the global navigation satellite system (GNSS) that is being created by the European Union (EU) through the European GNSS Agency (GSA),headquartered in Prague in the Czech Republic, with two ground operations centres, Oberpfaffenhofen near Munich in Germany and Fucino in Italy.
Quasi-Zenith Satellite System (QZSS) is a project of the Japanese government for the development of a four-satellite regional time transfer system and a satellite-based augmentation system for the United States operated Global Positioning System (GPS) to be receivable in the Asia-Oceania regions, with a focus on Japan.
The Indian Regional Navigation Satellite System (IRNSS), with an operational name of NAVIC is an autonomous regional satellite navigation system
Satellite-Based Augmentation System (SBAS)
US Wide Area Augmentation System (WAAS) - GPS
European Geostationary Navigation Overlay Service (EGNOS) - GPS , GLONASS and Galileo
Japanese Multi-functional Satellite Augmentation System (MTSAT or MSAS) - GPS
Indian GPS Aided Geo Augmented Navigation (GAGAN) - GPS, GLONASS
The Wide Area Augmentation System (WAAS) is an air navigation aid developed by the Federal Aviation Administration to augment the Global Positioning System (GPS), with the goal of improving its accuracy, integrity, and availability.
European Geostationary Navigation Overlay Service (EGNOS) is Europe's regional satellite-based augmentation system (SBAS)
Japanese Multi-functional Satellite Augmentation System (MSAS), Multi-functional Satellite Augmentation System (MTSAT or MSAS) is a Japanese satellite based augmentation system (SBAS), i.e. a satellite navigation system which supports differential GPS (DGPS) to supplement the GPS system by reporting (then improving) on the reliability and accuracy of those signals. MSAS is operated by Japan's Ministry of Land, Infrastructure and Transport Japan Civil Aviation Bureau (JCAB).
Indian GPS Aided Geo Augmented Navigation (GAGAN). The GPS-aided GEO augmented navigation (GAGAN) is an implementation of a regional satellite-based augmentation system (SBAS) by the Indian government. It is a system to improve the accuracy of a GNSS receiver by providing reference signals.
Reference:
http://help.vonino.eu/what-is-gps-and-lbs-tracking/
https://en.wikipedia.org/wiki/Assisted_GPS
https://en.wikipedia.org/wiki/BeiDou_Navigation_Satellite_System
https://en.wikipedia.org/wiki/European_Geostationary_Navigation_Overlay_Service
https://en.wikipedia.org/wiki/Wide_Area_Augmentation_System
https://en.wikipedia.org/wiki/Galileo_(satellite_navigation)
https://en.wikipedia.org/wiki/GPS-aided_GEO_augmented_navigation
https://en.wikipedia.org/wiki/MTSAT_Satellite_Augmentation_System
https://www.hkedcity.net/funpost/science_ahead/page_5b1674e0316e83bf4d000000
https://en.wikipedia.org/wiki/Indian_Regional_Navigation_Satellite_System
https://en.wikipedia.org/wiki/Quasi-Zenith_Satellite_System
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