There are 18 images added between 1 July 2008 and 8 February 2016
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GPS Block IIF  
Initial Operational Capability (IOC): 30 August 2010
Total Production: 12
Unitary Cost: USD$39 million
Origin: United States of America
Corporations: Boeing
Parent System: NAVSTAR
Initial Operational Capability (IOC): 1978
Total Production: 104
Total Cost: USD$7.6 billion
Family Members: GPS Block I, GPS Block II, GPS Block III, GPS Block IIIF and GPS Block IIR
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Description: The GPS satellites developed under the NAVSTAR program allows any properly equipped user to determine precise time, velocity and worldwide latitude, longitude and altitude to within a few meters. Originally was designed to be an accurate guidance and navigation tool for the military services but it has been adopted by civil and commercial customers for transportation, surveying and rescue operations. The first GPS Block I spacecraft was put into orbit on February 22, 1978. In the past, the GPS constellation spacecrafts fluctuated from 2-18 to 21 but currently the GPS constellation owned by the United States Air Force consists of 27 satellites (24+3 spares). As of 2004, the US Air Force GPS constellation consists of six planes, each one containing at least four satellites operating 24/7. Redundant satellites are being launched as spares to counterbalance attrition. The GPS is transitioning into the 2020s and the 2030s with the GPS Block III and Block IIIF satellites.

The GPS Block IIF spacecraft developed by Boeing represents the next generation GPS system designed to meet both military and civil customers requirements. Boeing potentially could build up to 16 Block IIF satellites with six satellites already ordered by the US Air Force and expected to be launched beginning in mid 2006. In early 2005, the first GPS Block IIF launch was delayed to 2007 in lieu of mid-2006. The GPS Block IIF spacecraft will feature extended design life up to 15 years, modular design, compatibility with the EELV launch vehicle, 3 meters spherical error probable, options for L5 civil signals, increased autonomy from ground segment, and rapid on-orbit re-programmability.

Boeing received two contract options valued at $173.2 million for the GPS IIF program on 24 January 2005. The first contract option funded initial production of three NAVSTAR Block IIF spacecraft to be completed by June 2008. The second contract established long-lead hardware for the production of an additional three satellites. At this point, contract options and firm orders represent the US Air Force has commitments on 12 GPS Block IIF satellites. Currently, Boeing is under a $1.3 billion contract to build nine GPS IIF satellites. In addition, the ground segment to support those satellites is being carried out under an $800 million contract. In June 2006, the US Air Force awarded Boeing a $138 million follow-on contract to build three additional GPS Block IIF spacecrafts bringing to 12 the number of such satellites to join the NAVSTAR GPS constellation.

GPS Block IIF Specifications

Diameter: 1.52 meter
Solar Panel Span: 5.33 meter (17.5 foot)
Orbit: 20,200 kilometer (12,554 mile)
Positioning Accuracy: 7 meter
Service Life: 15 year (5,475 day)
Weight: 844 kilogram (1,861 pound)
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

GPS Block IIF News

There are 14 news between
4 Jan 2007 and 25 Aug 2016
1  2  
Thursday, August 25, 2016Russian Armed Forces Deploy Pole-21 GPS Jammer
Friday, February 5, 2016US Air Force Places Into Orbit 12th and Final GPS Block IIF Satellite
Wednesday, July 9, 2014US Air Force GPS Technology Exceeds Technical Requirements in Critical Test
Monday, April 25, 2011Boeing-built GPS Operational Control Segment Enters Service with US Air Force
Monday, August 30, 2010First GPS IIF Satellite Enters Service with US Air Force
Friday, May 28, 2010First GPS IIF Satellite Sends First Signals from Space
Friday, February 26, 2010Raytheon to Develop Next-Generation GPS Control Segment
Monday, November 17, 2008Boeing to Add New Technology to US Air Force GPS IIF Ground Segment
Tuesday, July 1, 2008Boeing GPS IIF Satellite Completes Environmental Tests
Tuesday, February 26, 2008Boeing GPS Ground Control System Keeps Navigation Satellites Operational

Operators & Related Equipment

United States of America12
Feb 201612
Oct 201511
Dec 20148
Dec 20101

Grand Total 121

GPS Block IIF Spacecraft Listing

SerialCountry - Launch Rocket - SiteStatusLaunch DateOperationalRetired
SVN-62 Delta IV - Cape Canaveral Air Force Station27 May 201030 Aug 2010-
SVN-63 Delta IV - Cape Canaveral Air Force Station15 Jul 201122 Aug 2011-
SVN-65 Delta IV - Cape Canaveral Air Force Station4 Oct 20125 Dec 2012-
SVN-66 Atlas V - Cape Canaveral Air Force Station15 May 20139 Jul 2013-
SVN-67 Delta IV - Cape Canaveral Air Force Station20 Feb 20148 Apr 2014-
GPS IIF-6 Delta IV - Cape Canaveral Air Force Station16 May 201425 Jun 2014-
SVN-68 Atlas V - Cape Canaveral Air Force Station1 Aug 201413 Oct 2014-
GPS IIF-8 Atlas V - Cape Canaveral Air Force Station29 Oct 201418 Dec 2014-
SVN-71 Delta IV - Cape Canaveral Air Force Station25 Mar 2015May 2015-
GPS IIF-10 Atlas V - Cape Canaveral Air Force Station15 Jul 2015--
GPS IIF-11 Atlas V - Cape Canaveral Air Force Station30 Oct 2015Jan 2016-
GPS IIF-12 Atlas V - Cape Canaveral Air Force Station5 Feb 2016Mar 2016-

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