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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 ...
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 ...
GNSS systems that provide enhanced accuracy and integrity monitoring usable for civil navigation are classified as follows: [5] GNSS-1 is the first generation system and is the combination of existing satellite navigation systems (GPS and GLONASS), with Satellite Based Augmentation Systems (SBAS) or Ground Based Augmentation Systems (GBAS). [5]
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.
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 ...
Each satellite weighs 2,030 kg (4,480 lb) at launch and 1,080 kg (2,380 lb) once on orbit. [14] The first attempted launch of a Block IIR satellite failed on 17 January 1997 when the Delta II rocket exploded 12 seconds into flight. The first successful launch was on 23 July 1997. Twelve satellites in the series were successfully launched.
Series 3 satellites are Sun-synchronous and series 2 and 4 satellites are geosynchronous. Formosat-5: Active Taiwan’s National Space Organization (NSPO) 2017 Gaofen-2: Active CNSA: 2014 Gaofen-3: Active CNSA: 2016 GOES-16 and 17: Active NASA 2016 Geostationary Operational Environmental Satellite. Collects weather observations. See also: List ...
BeiDou-1, first generation experimental satellite - BeiDou-1B 20 December 2000 16:20 Xichang, LC-2 Long March 3A: N/A GEO 80° E Retired December 2011: BeiDou-1, first generation experimental satellite - BeiDou-1C 24 May 2003 16:34 Xichang, LC-2 Long March 3A: N/A GEO 110.5° E Retired December 2012: BeiDou-1, first generation experimental ...