[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/list-of-gps-satellites-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/list-of-gps-satellites-wikipedia\/","headline":"List of GPS satellites – Wikipedia","name":"List of GPS satellites – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia Samples of three GPS satellites’ orbits over a five-year period (2013 to 2018)\u00a0\u00a0USA-242\u00a0\u00b7 \u00a0\u00a0USA-239\u00a0\u00b7","datePublished":"2021-11-13","dateModified":"2021-11-13","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/4b\/Animation_of_GPS_satellite_orbits.gif\/290px-Animation_of_GPS_satellite_orbits.gif","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/4b\/Animation_of_GPS_satellite_orbits.gif\/290px-Animation_of_GPS_satellite_orbits.gif","height":"218","width":"290"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/list-of-gps-satellites-wikipedia\/","wordCount":31417,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia  Samples of three GPS satellites’ orbits over a five-year period (2013 to 2018)\u00a0\u00a0USA-242\u00a0\u00b7 \u00a0\u00a0USA-239\u00a0\u00b7 \u00a0\u00a0USA-151\u00a0\u00b7 \u00a0\u00a0Earth       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4As of 26\u00a0February\u00a02023[update], 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are unhealthy or in reserve, 42 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed construction and have been declared “Available For Launch” (AFL). The constellation requires a minimum of 24 operational satellites, and allows for up to 32; typically, 31 are operational at any one time. A GPS receiver needs four satellites to work out its position in three dimensions.[1]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4SVNs are “space vehicle numbers” which are serial numbers assigned to each GPS satellite. PRNs are the “pseudo-random noise” sequences, or Gold codes, that each satellite transmits to differentiate itself from other satellites in the active constellation.After being launched, GPS satellites enter a period of testing before their signals are set to “Healthy”. During normal operations, certain signals may be set to “Unhealthy” to accommodate updates or testing. After decommissioning, most GPS satellites become on-orbit spares and may be recommissioned if needed. Permanently retired satellites are sent to a higher, less congested disposal orbit where their fuel is vented, batteries are intentionally depleted and communication is switched off.[2]Table of Contents       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Satellites[edit]Satellites by launch date[edit]Satellites by block[edit]Orbital slots (by SVN)[edit]PRN status by satellite block[edit]PRN to SVN history[edit]Planned launches[edit]Block III[edit]Block IIIF[edit]See also[edit]References[edit]External links[edit]Satellites[edit]Satellites by launch date[edit]SatelliteLaunch (UTC)Carrier rocketLaunch siteBlockNo.SVNPRNSlotLOS[note 1]StatusRemarksOPS 511122 February 197823:44Atlas E\/F-SGS-1VAFB, SLC-3EI1[3]01042,703Retired17 July 1985[4]OPS 511213 May 197810:34Atlas E\/F-SGS-1VAFB, SLC-3EI2[5]02071,161Retired16 July 1981[4]OPS 51137 October 197800:28Atlas E\/FVAFB, SLC-3EI3[6]03064,973Retired18 May 1992[4]OPS 511411 December 197803:59Atlas E\/FVAFB, SLC-3EI4[7]04084,046Retired14 October 1989[4]Used for testing between February 1990 and May 1990.[4]OPS 51179 February 198023:08Atlas E\/FVAFB, SLC-3EI5[8]05051,389Retired28 November 1983 [4]OPS 511826 April 198022:00Atlas E\/FVAFB, SLC-3EI6[9]06093,967Retired6 March 1991[4]N\/A(Navstar 7)19 December 198101:10Atlas E\/FVAFB, SLC-3EI707100N\/A[4]Failed to reach orbit.OPS 979414 July 198310:21Atlas E\/FVAFB, SLC-3WI8[10]08113,583Retired4 May 1993[4]USA-113 June 198411:37Atlas E\/FVAFB, SLC-3WI9[11]09133,660Retired20 June 1994[4]Used for testing between February 1994 and June 1994.[4]USA-58 September 198421:41Atlas E\/FVAFB, SLC-3WI10[12]10124,089Retired15 March 1996[4]Used for testing between November 1995 and March 1996.[4]USA-109 October 198502:53Atlas E\/FVAFB, SLC-3WI11[13]11033,109Retired13 April 1994[4]N\/A(Prototype)II0120N\/AQualification vehicle built by Rockwell International to secure Block II contract; never launched.USA-3514 February 198918:30Delta II 6925-9.5CCAFS, LC-17A[14]II1[15]14144,059Retired26 March 2000[16][17]USA-3810 June 198922:30Delta II 6925-9.5CCAFS, LC-17A[14]II2[18]1302B35,371Retired22 February 2004[17]USA-4218 August 198905:58Delta II 6925-9.5CCAFS, LC-17A[14]II3[19]16164,075Retired13 October 2000[17]USA-4721 October 198909:31Delta II 6925-9.5CCAFS, LC-17A[14]II4[20]1919A54,165Retired16 March 2001[17]USA-4911 December 198918:10Delta II 6925-9.5CCAFS, LC-17B[14]II5[21]1717D35,554Retired23 February 2005[17]USA-5024 January 199022:55Delta II 6925-9.5CCAFS, LC-17A[14]II6[22]18183,860Retired18 August 2000[17]USA-5426 March 199002:45Delta II 6925-9.5CCAFS, LC-17A[14]II7[23]20202,249Retired21 May 1996[17]Decommissioned after twice changing frequency without being commanded to.USA-632 August 199005:39Delta II 6925-9.5CCAFS, LC-17A[14]II8[24]2121E24,438Retired25 September 2002[17]USA-641 October 199021:56Delta II 6925-9.5CCAFS, LC-17A[14]II9[25]1515D56,009Retired17 November 2006[17]Used for testing from November 2006 until March 2007[17]USA-6626 November 199021:39Delta II 7925-9.5CCAFS, LC-17AIIA1[26]232332E57,720Retired25 January 2016[27]Decommissioned from active service using PRN23 on 13 February 2004. Set usable with PRN32 on 26 February 2008.[17]USA-714 July 199102:32Delta II 7925-9.5CCAFS, LC-17AIIA2[28]2424D17,394Retired30 September 2011[29]USA-7923 February 199222:29Delta II 7925-9.5CCAFS, LC-17BIIA3[30]2525A26,509Retired18 December 2009USA-8010 April 199203:20Delta II 7925-9.5CCAFS, LC-17BIIA4[31]2828C21,954Retired15 August 1997[17]Retired early, replaced by USA-117.USA-837 July 199209:20Delta II 7925-9.5CCAFS, LC-17BIIA5[32]2626F58,219Retired6 January 2015[33]USA-849 September 199208:57Delta II 7925-9.5CCAFS, LC-17AIIA6[34]2727A66,910Retired10 August 2011[35][36]USA-8522 November 199223:54Delta II 7925-9.5CCAFS, LC-17AIIA7[37]32310130NAF45,595Retired17 March 2008[35]PRN changed from 32 to 01 in January 1993 due to receiver problems. Decommissioned 17 March 2008 and removed from slot F4. Briefly resumed L-band transmission in 2014 but signal unusable.[17][35]USA-8718 December 199222:16Delta II 7925-9.5CCAFS, LC-17BIIA8[38]2929F55,423Retired23 October 2007[39]USA-883 February 199302:55Delta II 7925-9.5CCAFS, LC-17AIIA9[40]2222B13,591Retired3 December 2002[17]USA-9030 March 199303:09Delta II 7925-9.5CCAFS, LC-17AIIA10[41]3131C34,592Retired24 October 2005USA-9113 May 199300:07Delta II 7925-9.5CCAFS, LC-17AIIA11[42]37070124C48,346Retired18 March 2016[43]Switched to PRN01 in October 2008 but was unusable.[17] Switched to PRN24 in April 2012 but was unusable.[44]USA-9226 June 199313:27Delta II 7925-9.5CCAFS, LC-17AIIA12[45]3909A57,633Retired19 May 2014[35]First satellite to complete initial operational 24-satellite constellation.USA-9430 August 199312:38Delta II 7925-9.5CCAFS, LC-17BIIA13[46]350530B56,313Retired1 May 2013[17]Decommissioned from active service using PRN05 in March 2009. Resumed activity using PRN30 in August 2011.[17]USA-9626 October 199317:04Delta II 7925-9.5CCAFS, LC-17BIIA14[47]340418D68,612Retired9 October 2019[48][49]Decommissioned from active service using PRN04 in November 2015.[50] Reactivated in March 2018 using PRN18.[51] Decommissioned from active service using PRN18 in October 2019.[52]USA-10010 March 199403:40Delta II 7925-9.5CCAFS, LC-17AIIA15[53]360604[54]C67,289Retired21 February 2014[35][36]USA-11728 March 199600:21Delta II 7925-9.5CCAFS, LC-17BIIA16[55]3303C56,702Retired2 August 2014[56]USA-12616 July 199600:50Delta II 7925-9.5CCAFS, LC-17AIIA17[57]4010E67,179Retired11 March 2016[58]USA-12812 September 199608:49Delta II 7925-9.5CCAFS, LC-17AIIA18[59]3030B25,425Retired20 July 2011[35]GPS IIR-117 January 199716:28Delta II 7925-9.5CCAFS, LC-17AIIR142120N\/A[35]Failed to reach orbit.USA-13223 July 199703:43Delta II 7925-9.5[60]CCAFS, LC-17AIIR24313F69,388Operational[35]Longest-serving satellite in GPS history.USA-1356 November 199700:30Delta II 7925-9.5CCAFS, LC-17AIIA19[61]3808A38,008Retired9 October 2019[62]USA-1457 October 199912:51Delta II 7925-9.5[63]CCAFS, SLC-17AIIR34611D57,706On orbit spare10 November 2020[35][64]USA-15011 May 200001:48Delta II 7925-9.5[65]CCAFS, SLC-17AIIR45120E48,365Operational[35]USA-15116 July 200009:17Delta II 7925-9.5[66]CCAFS, SLC-17AIIR54428B37,648Retired23 June 2021[67][68]USA-15410 November 200017:14Delta II 7925-9.5[69]CCAFS, SLC-17AIIR6411422F57,918Retired25 January 2023[70]Retired 9 July 2020. Subsequently reactivated on 20 January 2022 and decommissioned again on 25 January 2023.USA-15630 January 200107:55Delta II 7925-9.5[71]CCAFS, SLC-17AIIR75418E46,244On orbit spare5 March 2018[72][73]USA-16629 January 200318:06Delta II 7925-9.5[74]CCAFS, SLC-17BIIR85616B17,372Operational[35]USA-16831 March 200322:09Delta II 7925-9.5[75]CCAFS, SLC-17AIIR94521D37,311Operational[35]USA-17521 December 200308:05Delta II 7925-9.5[76]CCAFS, SLC-17AIIR104722E66,604Retired18 January 2022[77]USA-17720 March 200417:53Delta II 7925-9.5[78]CCAFS, SLC-17BIIR115919C56,956Operational[35]USA-17823 June 200422:54Delta II 7925-9.5[79]CCAFS, SLC-17BIIR126023F45,732Retired2 March 2020[80][35]USA-1806 November 200405:39Delta II 7925-9.5[81]CCAFS, SLC-17BIIR136102D16,725Operational[35]USA-18326 September 200503:37Delta II 7925-9.5[82]CCAFS, SLC-17AIIRM15317C46,401Operational[35]Also known as IIR-14; first to broadcast L2C signal.USA-19025 September 200618:50Delta II 7925-9.5[83]CCAFS, SLC-17AIIRM25231A26,037Operational[35]Also known as IIR-15.USA-19217 November 200619:12Delta II 7925-9.5[84]CCAFS, SLC-17AIIRM35812B45,984Operational[35]Also known as IIR-16; first satellite to complete the full operational 31-satellite constellation.USA-19617 October 200712:23Delta II 7925-9.5[85]CCAFS, SLC-17AIIRM45515F25,650Operational[35]Also known as IIR-17.USA-19920 December 200720:04Delta II 7925-9.5[86]CCAFS, SLC-17AIIRM55729C15,586Operational[35]Also known as IIR-18.USA-20115 March 200806:10Delta II 7925-9.5[87]CCAFS, SLC-17AIIRM64807A45,500Operational[35]Also known as IIR-19.USA-20324 March 200908:34Delta II 7925-9.5[88]CCAFS, SLC-17AIIRM74901273006NAB6814In ReserveAlso known as IIR-20; broadcasts demonstration L5 signal. Never entered service due to poor quality signal; decommissioned on 6 May 2011 but subsequently reactivated for testing. Broadcast PRN-01 before decommissioning, PRN-27 after reactivation. Shifted to PRN-30 as of 8 May 2013 and to PRN-06 as of 3 April 2014. Currently not assigned a PRN.[35]USA-20617 August 200910:35Delta II 7925-9.5CCAFS, SLC-17AIIRM85005E34,980Operational[35]Originally scheduled for launch in 1999 as IIR-3 but damaged during processing.[89] Also known as IIR-21; L5 services disconnected from J2 port before launch. Final Delta II launch with a United States Air Force payload.[90] Final launch from SLC-17A, final Delta II 7925.USA-21328 May 201003:00Delta IV M+ (4,2)CCAFS, SLC-37BIIF16225B24,696Operational[35]First to broadcast operational L5 signal.USA-23216 July 201106:41Delta IV M+(4,2)CCAFS, SLC-37BIIF26301D24,282Operational[35]USA-2394 October 201212:10Delta IV M+(4,2)CCAFS, SLC-37BIIF36524A13,836Operational[35]USA-24215 May 201321:38Atlas V 401CCAFS, SLC-41IIF46627C23,613Operational[35]USA-24821 February 201401:59Delta IV M+ (4,2)CCAFS, SLC-37BIIF56430A33,331Operational[35]USA-25117 May 201400:03Delta IV M+ (4,2)CCAFS, SLC-37BIIF66706D43,246Operational[35]USA-2562 August 201403:23Atlas V 401CCAFS, SLC-41IIF76809F33,169Operational[35]USA-25829 October 201417:21Atlas V 401CCAFS, SLC-41IIF86903E13,081Operational[35]USA-26025 March 201518:36Delta IV M+ (4,2)CCAFS, SLC-37BIIF97126B52,934Operational[35]USA-26215 July 201515:36Atlas V 401CCAFS, SLC-41IIF107208C32,822Operational[35]USA-26531 October 201516:13Atlas V 401CCAFS, SLC-41IIF117310E22,714Operational[91]USA-2665 February 201613:38Atlas V 401CCAFS, SLC-41IIF127032F12,617Operational [92]USA-289Vespucci[93]23 December 201813:51Falcon 9 Block 5CCAFS, SLC-40III17404F41,565Operational [94]Physically occupies the F4 slot but is designated “A6” in the GPS Operational Advisory for control station purposes.[35]USA-293Magellan22 August 201913:06Delta IV M+ (4,2)CCAFS, SLC-37BIII27518D61,323Operational [95]USA-304Matthew Henson30 June 202020:10:46Falcon 9 Block 5CCAFS, SLC-40III37623E51,010Operational[96]The third GPS Block III satellite was initially nicknamed Columbus, but was renamed Matthew Henson.[97][98]USA-309Sacagawea5 November 202023:24:23Falcon 9 Block 5CCAFS, SLC-40III47714B6882Operational[99]USA-319Neil Armstrong17 June 2021 16:09[100]Falcon 9 Block 5[101]CCAFS, SLC-40[102]III57811D5658Operational[103]USA-343Amelia Earhart18 January 2023 12:24Falcon 9 Block 5CCAFS, SLC-40III67928A2F78Operational[104]^ Length Of Service in days. Includes testing period(s).Satellites by block[edit]Orbital slots (by SVN)[edit]Refer to GPS Constellation Status for the most up-to-date information.As of 26\u00a0February\u00a02023[update]SlotPlaneABCDEF16556576169702526266637355364724550684485853675174571597876679777543Numbers in parentheses refer to non-operational satellites.Once launched, GPS satellites do not change their plane assignment but slot assignments are somewhat arbitrary and are subject to change.PRN status by satellite block[edit]As of 26\u00a0February\u00a02023[update], 31 of 32 PRNs are in use; PRNs 22 is unavailable. Three additional satellites, including one not assigned a PRN, are designated as on-orbit spares.PRN0102030405060708091011121314151617181920212223242526272829303132—IIROSOOSOOORIIRMOOOOOOOSIIFOOOOOOOOOOOOIIIOOOOOOLegend:O \u2013 OperationalT \u2013 Testing in preparation for operationS \u2013 On orbit SpareU \u2013 Unhealthy and unusableR \u2013 RetiredPRN to SVN history[edit]This section is for the purpose of making it possible to determine the PRN associated with a SVN at a particular epoch. For example, SVN 049 had been assigned PRNs 01, 24, 27, and 30 at different times of its lifespan, whereas PRN 01 had been assigned to SVNs 032, 037, 049, 035, and 063 at different epochs. This information can be found in the IGS ANTEX file[permanent dead link], which uses the convention “GNN” and “GNNN” for PRNs and SVNs, respectively. For example, SVN 049 is described as:BLOCK IIR-M         G01                 G049      2009-014A TYPE \/ SERIAL NO      2009     3    24     0     0    0.0000000                 VALID FROM            2011     5     6    23    59   59.9999999                 VALID UNTIL         BLOCK IIR-M         G24                 G049      2009-014A TYPE \/ SERIAL NO      2012     2     2     0     0    0.0000000                 VALID FROM            2012     3    14    23    59   59.9999999                 VALID UNTIL         BLOCK IIR-M         G24                 G049      2009-014A TYPE \/ SERIAL NO      2012     8     9     0     0    0.0000000                 VALID FROM            2012     8    22    23    59   59.9999999                 VALID UNTIL         BLOCK IIR-M         G27                 G049      2009-014A TYPE \/ SERIAL NO      2012    10    18     0     0    0.0000000                 VALID FROM            2013     5     9    23    59   59.9999999                 VALID UNTIL         BLOCK IIR-M         G30                 G049      2009-014A TYPE \/ SERIAL NO      2013     5    10     0     0    0.0000000                 VALID FROM          whereas for PRN 01 the following excerpt is relevant:BLOCK IIA           G01                 G032      1992-079A TYPE \/ SERIAL NO      1992    11    22     0     0    0.0000000                 VALID FROM            2008    10    16    23    59   59.9999999                 VALID UNTIL         BLOCK IIA           G01                 G037      1993-032A TYPE \/ SERIAL NO      2008    10    23     0     0    0.0000000                 VALID FROM            2009     1     6    23    59   59.9999999                 VALID UNTIL         BLOCK IIR-M         G01                 G049      2009-014A TYPE \/ SERIAL NO      2009     3    24     0     0    0.0000000                 VALID FROM            2011     5     6    23    59   59.9999999                 VALID UNTIL         BLOCK IIA           G01                 G035      1993-054A TYPE \/ SERIAL NO      2011     6     2     0     0    0.0000000                 VALID FROM            2011     7    12    23    59   59.9999999                 VALID UNTIL         BLOCK IIF           G01                 G063      2011-036A TYPE \/ SERIAL NO      2011     7    16     0     0    0.0000000                 VALID FROM          A table extracted out of the ANTEX file is made available by the Bernese GNSS Software.Planned launches[edit]Block III[edit]DateRocketLaunch siteSatelliteSVNRemarksMay 2024[105][106]Vulcan CentaurCCSFS SLC-41GPS III SV07 Sally Ride80Space vehicle manufacturing contract awarded February 2013.[107] It was in assembly in December 2018.[108]Declared “Available for Launch” on 20 May 2021.[106][109]2025[110]CCSFS (TBD)GPS III SV08 Katherine Johnson81Space vehicle manufacturing contract awarded February 2013.[107] The satellite was named “Katherine Johnson” in June 2020 following its successful core mate assembly.[111]Declared “Available for Launch” on 10 June 2021.[106]End of 2025[112]CCSFS (TBD)GPS III SV09 Ellison Onizuka82Space vehicle manufacturing contract awarded September 2016.[113]Declared “Available for Launch” on 23 Aug 2022.[112]2026[114]CCSFS (TBD)GPS III SV10 Hedy Lamarr83Space vehicle manufacturing contract awarded September 2016.[113] Component build up stage as of June 2021.[115] Component deliveries continuing through May 2022.[116]Declared “Available for Launch” on 08 Dec 2022.[117]Block IIIF[edit]See also[edit]References[edit]^ US Government. “GPS.gov”. gps.gov. U.S. Government. Retrieved 21 March 2015.  This article incorporates text from this source, which is in the public domain.^ “2 SOPS disposes last GPS IIA satellite after 26 years”. GPS World. 17 April 2020. Retrieved 7 July 2021.^ “Navstar 1”. NASA. Retrieved 21 November 2020.  This article incorporates text from this source, which is in the public domain.^ a b c d e f g h i j k l m n “USNO Block 1 Satellite Information”. Retrieved 28 June 2015.[permanent dead link] This article incorporates text from this source, which is in the public domain.^ “Navstar 2”. NASA. Retrieved 21 November 2020.  This article incorporates text from this source, which is in the public domain.^ “Navstar 3”. NASA. Retrieved 21 November 2020.  This article incorporates text from this source, which is in the public domain.^ “Navstar 4”. NASA. Retrieved 21 November 2020.  This article incorporates text from this source, which is in the public domain.^ “Navstar 5”. NASA. Retrieved 24 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 6”. NASA. Retrieved 24 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 8”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 9”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 10”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 11”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ a b c d e f g h i Wade, Mark. “Delta 6925”. Encyclopedia Astronautica. Archived from the original on 22 May 2013. Retrieved 25 April 2013.^ “Navstar II-1”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NAVSTAR GPS II-1 – Summary”. Space and Tech. Archived from the original on 12 December 2011. Retrieved 10 July 2012.^ a b c d e f g h i j k l m n o p q “USNO Block 2 Satellite Information”. Retrieved 28 June 2015.[permanent dead link] This article incorporates text from this source, which is in the public domain.^ “Navstar II-2”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-3”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-4”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-5”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-6”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-7”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-8”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar II-9”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 2A-01”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Notice Advisory To NAVSTAR Users (NANU) 2016008”. U.S. Coast Guard Navigation Center. Retrieved 26 January 2016.  This article incorporates text from this source, which is in the public domain.^ “Navstar 2A-02”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU 2011088”. Archived from the original on 8 April 2013. Retrieved 4 November 2011.  This article incorporates text from this source, which is in the public domain.^ “Navstar 2A-03”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 2A-04”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-05”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU 20150106”. Retrieved 7 January 2015.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-06”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah “Navigation Center”. United States Coast Guard. Retrieved 17 June 2021.^ a b “NAVSTAR GPS Constellation Status”. University of New Brunswick. 4 December 2015. Retrieved 14 April 2016.^ “Navstar IIA-07”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-08”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “2007144 NANU”. Retrieved 28 July 2015.^ “Navstar IIA-09”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-10”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-11”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ Ray, Justin (31 March 2016). “Two GPS navigation birds retired after two decades in space”. Spaceflight Now. Pole Star Publications Ltd. Retrieved 29 April 2021.^ “Archive of 2012 NANU Messages”. USNO. Retrieved 28 June 2015.[permanent dead link] This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-12”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-13”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-14”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Notice Advisory to GPS Users”. navcen.uscg.gov. Retrieved 28 October 2019.  This article incorporates text from this source, which is in the public domain.^ “Farewell to a Great Generation: GPS IIA”. Inside GNSS \u2013 Global Navigation Satellite Systems Engineering, Policy, and Design. 15 April 2020. Retrieved 18 June 2021.^ “NANU2015091”. Celestrak. Retrieved 23 March 2018.^ “NANU2018015”. Celestrak. Retrieved 23 March 2018.^ “Notice Advisory to GPS Users”. navcen.uscg.gov. Retrieved 28 October 2019.  This article incorporates text from this source, which is in the public domain.^ “Navstar IIA-15”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU2019104”. celestrak.com. Retrieved 26 July 2019.^ “Navstar IIA-16”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU 2014-063”. Retrieved 28 June 2015.^ “Navstar IIA-17”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Two GPS navigation birds retired after two decades in space \u2013 Spaceflight Now”.^ “Navstar IIA-18”. NASA. Retrieved 25 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 43”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 38”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “2nd Space Operations Squadron decommissions 22-year-old satellite”. Air Force Space Command (Archived). Retrieved 18 June 2021.^ “Navstar 46”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “CelesTrak Orbit Visualization”.^ “Navstar 47”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 48”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2021035SUBJ: SVN44 (PRN28) DECOMMISSIONING^ “CelesTrak Orbit Visualization”.^ “Navstar 49”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU2023006”. Celestrak. 15 January 2023. Retrieved 18 February 2023.^ “Navstar 50”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU2018009”. Retrieved 6 March 2018.^ “CelesTrak Orbit Visualization”.^ “Navstar 51”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 52”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 53”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Notice Advisory to NAVStar Users”. 17 January 2022.^ “Navstar 54”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 55”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “GPS constellation changes with addition of second GPS III satellite”. 2 April 2020.^ “Navstar 56”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 57”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “GPS 2R-15”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 59”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “GPS 2R-17”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “GPS 2R-18”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 62”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “Navstar 62”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ Harland, David (31 May 2005). Space Systems Failures: Disasters and Rescues of Satellites, Rocket and Space Probes (2005th\u00a0ed.). p.\u00a0325. ISBN\u00a0978-0387215198.^ “Navstar 63”. NASA. Retrieved 26 April 2013.  This article incorporates text from this source, which is in the public domain.^ “NANU 2015-093”. Retrieved 10 December 2015.  This article incorporates text from this source, which is in the public domain.^ “NANU 2016-011”. Retrieved 9 March 2016.  This article incorporates text from this source, which is in the public domain.^ Clark, Stephen (23 December 2018). “SpaceX closes out year with successful GPS satellite launch”. Spaceflight Now. Retrieved 24 December 2018.^ “NANU 2020-004”. Retrieved 13 January 2020.  This article incorporates text from this source, which is in the public domain.^ “NANU 2020-015”. Retrieved 2 April 2020.  This article incorporates text from this source, which is in the public domain.^ “NANU 2020-046”. USCG Navigation Center. Retrieved 23 November 2020.^ Clark, Stephen (2 October 2020). “Space Force announces new nicknames for GPS satellites”. Spaceflight Now. Retrieved 2 October 2020.^ https:\/\/www.losangeles.af.mil\/News\/Article-Display\/Article\/2082387\/gps-iii-space-vehicle-03-safely-arrives-in-florida\/  This article incorporates text from this source, which is in the public domain.^ “NANU 2020-086”. USCG Navigation Center. Retrieved 2 December 2020.^ “Fifth GPS III Satellite Takes to the Skies”. Lockheed Martin. Retrieved 17 June 2021.^ “Air Force Awards Launch Services Contracts to SpaceX and ULA”. losangeles.af.mil. US Air Force Space and Missile Command Public Affairs. 14 March 2018. Retrieved 16 March 2018.  This article incorporates text from this source, which is in the public domain.^ Clark, Stephen. “Five launches planned from Florida’s Space Coast in June \u2013 Spaceflight Now”. Retrieved 29 May 2021.^ “NANU 2022-025”. USCG Navigation Center. Retrieved 25 May 2022.^ “NANU 2023-013”. USCG Navigation Center. Retrieved 26 February 2023.^ @USSF_SSC (27 May 2022). “SSC ordered 8 National Security Space Launch missions from our industry partners ULA & SpaceX for launch in 2024 for #SpaceForce” (Tweet). Retrieved 27 May 2022 \u2013 via Twitter.^ a b c “Military Communications & Positioning, Navigation, and Timing Overview & GPS Enterprise Update” (PDF). U.S. Space Force Space Systems Command. 16 November 2022. Retrieved 21 March 2023.^ a b “Air Force Awards Lockheed Martin Contracts for Next Set of GPS III Satellites”. GPS World. 26 February 2013. Retrieved 2 December 2017.^ Whitney, Steve (5 December 2018). “GPS Enterprise Status and Modernization” (PDF). U.S. Air Force Space and Missile Systems Center Public Affairs Office. Retrieved 22 December 2018.  This article incorporates text from this source, which is in the public domain.^ “Fifth GPS III Satellite Takes to the Skies”. Lockheed Martin. Retrieved 16 June 2021. Lockheed Martin’s sixth, seventh and eighth GPS III satellites are already complete, “Available for Launch” and just waiting for launch date arrangements.^ “Department of Defense Fiscal Year (FY) 2024 Budget Estimates” (PDF). March 2023.^ “GPS III SV08 Core Mate Complete, Space Vehicle Named for NASA Trailblazer”. Space and Missile Systems Center. Los Angeles Air Force Base. 10 June 2020. Retrieved 12 June 2020.  This article incorporates text from this source, which is in the public domain.^ a b “GPS III Space Vehicle 09 declared “Available for Launch”“ (PDF). Space Systems Command. 26 August 2022. Retrieved 19 January 2023.^ a b “SMC exercises contract options to procure two additional GPS III satellites” (Press release) United States Air Force 21 September 2016  This article incorporates text from this source, which is in the public domain.^ Dunn, Michael (6 March 2023). “Directions 2023: Advancing GPS to Meet the Future”. GPSWorld.com. Retrieved 21 March 2023.^ “SpaceX launches GPS satellite to provide PNT services”. GPS World. 18 June 2021. Retrieved 18 June 2021.^ Dunn, Michael (2 May 2022). “Directions 2022: GPS positioned for the future”. GPSWorld.com. Retrieved 21 January 2023.^ “Sixth GPS III Satellite Built By Lockheed Martin Launches As Part Of Constellation Modernization”. Lockheed Martin. 18 January 2023. Retrieved 31 January 2023.^ “GAO-21-222 Weapon Systems Annual Assessment” (PDF). Government Accountability Office.^ “Global Positioning System Ill Follow-On Production (GPS IIIF)” (PDF). Defense Acquisition Management Information Retrieval (DAMIR). December 2019.^ “Department of Defense Fiscal Year (FY) 2020 Budget Estimates” (PDF). March 2019.^ a b c d e f g “Department of Defense Fiscal Year (FY) 2023 Budget Estimates” (PDF). April 2022.^ a b c d e f Gleckel, Gerry (15 November 2017). “GPS Status and Modernization Progress” (PDF). gps.gov. Retrieved 1 December 2017.  This article incorporates text from this source, which is in the public domain.External links[edit]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4"},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/list-of-gps-satellites-wikipedia\/#breadcrumbitem","name":"List of GPS satellites – Wikipedia"}}]}]