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2. List of GPS satellites - Wikipedia

   en.wikipedia.org/wiki/List_of_GPS_satellites

   Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 15 August 2023, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 in reserve or testing, 42 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed construction ...

3. List of GLONASS satellites - Wikipedia

   en.wikipedia.org/wiki/List_of_GLONASS_satellites

   Satellite Launch date/time (UTC) Carrier rocket Launch site Launch block Satellite type GC number Orbital plane [2] Slot [2] Status / Retirement [2] [a] [needs update] Kosmos 1413: 12 October 1982 14:57 Proton-K DM-2: Baikonur, Site 200/39: 1 I: 711 I 1 12 January 1984: Kosmos 1490: 10 August 1983 18:24 Proton-K DM-2: Baikonur, Site 200/39: 2 I ...

4. Satellite navigation - Wikipedia

   en.wikipedia.org/wiki/Satellite_navigation

   Three of the satellites are placed in geostationary orbit (GEO) and the remaining 4 in geosynchronous orbit (GSO) to have a larger signal footprint and lower number of satellites to map the region. It is intended to provide an all-weather absolute position accuracy of better than 7.6 metres (25 ft) throughout India and within a region extending ...

5. List of WAAS reference stations - Wikipedia

   en.wikipedia.org/wiki/List_of_WAAS_reference...

   Hampton, Georgia: KZTL , 261.138 m, 261.126 m, 261.161 m ... Map all coordinates using OpenStreetMap. Download coordinates as: KML; GPX (all coordinates)

6. List of satellites in geosynchronous orbit - Wikipedia

   en.wikipedia.org/wiki/List_of_satellites_in...

   This is a list of satellites in geosynchronous orbit (GSO). These satellites are commonly used for communication purposes, such as radio and television networks, back-haul, and direct broadcast. Traditional global navigation systems do not use geosynchronous satellites, but some SBAS navigation satellites do.

7. Global Positioning System - Wikipedia

   en.wikipedia.org/wiki/Global_Positioning_System

   All satellites broadcast at the same two frequencies, 1.57542 GHz (L1 signal) and 1.2276 GHz (L2 signal). The satellite network uses a CDMA spread-spectrum technique [160]: 607 where the low-bitrate message data is encoded with a high-rate pseudo-random (PRN) sequence that is different for each satellite. The receiver must be aware of the PRN ...

8. GNSS augmentation - Wikipedia

   en.wikipedia.org/wiki/GNSS_augmentation

   Service areas of satellite-based augmentation systems (SBAS) A list of GNSS and SBAS satellites received by a phone. Satellite-based augmentation systems (SBAS) support wide-area or regional augmentation through the use of additional satellite-broadcast messages. Using measurements from the ground stations, correction messages are created and ...

9. GPS signals - Wikipedia

   en.wikipedia.org/wiki/GPS_signals

   Whereas the C/A PRNs are unique for each satellite, each satellite transmits a different segment of a master P-code sequence approximately 2.35 x 10 14 chips long (235,000,000,000,000 chips). Each satellite repeatedly transmits its assigned segment of the master code, restarting every Sunday at 00:00:00 GPS time.