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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. GPS satellite blocks - Wikipedia

   en.wikipedia.org/wiki/GPS_satellite_blocks

   The Block IIR-M satellites include a new military signal and a more robust civil signal, known as L2C. [17] There are eight satellites in the Block IIR-M series, which were built by Lockheed Martin. [18] The first Block IIR-M satellite was launched on 26 September 2005. The final launch of a IIR-M was on 17 August 2009. [19]

5. Satellite navigation - Wikipedia

   en.wikipedia.org/wiki/Satellite_navigation

   GNSS-2 is the second generation of systems that independently provide a full civilian satellite navigation system, exemplified by the European Galileo positioning system. [5] These systems will provide the accuracy and integrity monitoring necessary for civil navigation; including aircraft.

6. GLONASS - Wikipedia

   en.wikipedia.org/wiki/GLONASS

   Glonass-M satellites produced since 2014 (s/n 755+) will also transmit L3OC signal for testing purposes. Enhanced Glonass-K1 and Glonass-K2 satellites, to be launched from 2023, will feature a full suite of modernized CDMA signals in the existing L1 and L2 bands, which includes L1SC, L1OC, L2SC, and L2OC, as well as the L3OC signal. Glonass-K2 ...

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. Category:Lists of satellites - Wikipedia

   en.wikipedia.org/wiki/Category:Lists_of_satellites

   List of GPS satellites; H. List of artificial objects in heliocentric orbit; I. List of Indian satellites; List of Intelsat satellites; K. List of Kosmos satellites; N.

9. 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.