Galileo (Europe's European Satellite Navigation System)
type: Concept

Global Change Master Directory platforms
type: Collection
type: MicroThesaurus
type: ConceptGroup

GLObal NAvigation Satellite System (GLONASS)
type: Concept

Satellite-Based Augmentation System (SBAS)
type: Concept

Space-based Platforms
type: Concept

Quasi-Zenith Satellite System (QZSS)
type: Concept

NAVSTAR
type: Concept

Global Change Master Directory
type: Collection
type: ConceptGroup
type: Domain
member: Global Change Master Directory platforms

Global Positioning System (GPS)
type: Concept

ESA Data Ontology
type: ConceptScheme
type: Ontology

India's Regional Navigation Satellite System (IRNSS)
type: Concept

Beidou (China's Satellite Navigation System)
type: Concept

Navigation Satellites
type: Concept
change note: 2022-02-27 13:55:57.0 [tstevens] update Definition (Platforms such as GPS, NAVSTAR, and GLONASS whose purpose is for ascertaining one's position and planning and following a route.A satellite navigation system with global coverage may be termed a global navigation satellite system (GNSS). As of September 2020, the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), China's BeiDou Navigation Satellite System (BDS) and the European Union's Galileo are fully operational GNSSs. Japan's Quasi-Zenith Satellite System (QZSS) is a (US) GPS satellite-based augmentation system to enhance the accuracy of GPS, with satellite navigation independent of GPS scheduled for 2023. The Indian Regional Navigation Satellite System (IRNSS) plans to expand to a global version in the long term.); update Definition (NASA);
change note: 2021-11-18 13:06:32.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (Navigation Satellites [1506fb17-7ac4-44ce-bde5-074885bdb2d2,825996] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875]);
change note: 2017-08-14 15:24:51.0 [tstevens] Insert Concept add narrower relation (Navigation Platforms [1506fb17-7ac4-44ce-bde5-074885bdb2d2,287403] - SBAS (Satellite-Based Augmentation System) [612454e6-06ce-4bd3-b4f2-6db85f49a013,309927]);
change note: 2017-08-14 14:59:55.0 [tstevens] Insert Concept add narrower relation (Navigation Platforms [1506fb17-7ac4-44ce-bde5-074885bdb2d2,287403] - Galileo [b1c1ecfd-eb6c-4a51-b86e-2ae64babc27d,309895]);
change note: 2017-08-14 15:22:50.0 [tstevens] Insert Concept add narrower relation (Navigation Platforms [1506fb17-7ac4-44ce-bde5-074885bdb2d2,287403] - QZSS (Japan’s Quasi-Zenith Satellite System) [225fb800-22b1-4d06-88ac-2bb391ac0906,309911]);
change note: 2017-08-14 15:23:49.0 [tstevens] Insert Concept add narrower relation (Navigation Platforms [1506fb17-7ac4-44ce-bde5-074885bdb2d2,287403] - IRNSS (India’s Regional Navigation Satellite System) [bad22a08-f8ab-49b3-b266-005b21496626,309919]);
change note: 2017-08-14 15:21:42.0 [tstevens] Insert Concept add narrower relation (Navigation Platforms [1506fb17-7ac4-44ce-bde5-074885bdb2d2,287403] - Beidou (China’s Satellite Navigation System) [ef679d6a-a05b-4976-a236-ce2158b758ea,309903]);
change note: 2021-11-18 12:37:26.0 [tstevens] update PrefLabel (Navigation Satellites);
top concept of: ESA Data Ontology
in scheme: platforms
in scheme: ESA Data Ontology
definition: Platforms such as GPS, NAVSTAR, and GLONASS whose purpose is for ascertaining one's position and planning and following a route.A satellite navigation system with global coverage may be termed a global navigation satellite system (GNSS). As of September 2020, the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), China's BeiDou Navigation Satellite System (BDS) and the European Union's Galileo are fully operational GNSSs. Japan's Quasi-Zenith Satellite System (QZSS) is a (US) GPS satellite-based augmentation system to enhance the accuracy of GPS, with satellite navigation independent of GPS scheduled for 2023. The Indian Regional Navigation Satellite System (IRNSS) plans to expand to a global version in the long term.

FEDSAT
type: Concept