Space & Strategic :: C3ISTAR Satellites :: NAVSTAR :: GPS Block IIR  
 
 
 
 

GPS Block IIR

IOC: 1996
Total Production: 21
Also Known As: GPS IIR-M (Series of eight improved satellites)

Origin: United States of America

Contractor/s: Lockheed Martin

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 Block IIR is an improved version of GPS Block II spacecraft with an automated operation mode independent of the ground control segment. The spherical error probable was cut to 7 meters, the satellite features re-programmable micro-processors and civil/commercial signal was added. Lockheed-Martin Block IIR satellites were launched beginning in 1996 and continuing through 2004.

On June 23, 2004, the US Air Force launched successfully the GPS IIR-12 spacecraft aboard a Delta II launch system joining a constellation of 28 operational GPS satellites. GPS IIR-12 is the 11th GPS IIR satellite put into orbit successfully. GPS IIR-13 was put into orbit November 6 2004 totaling 30 satellites on orbit.

Lockheed-Martin is developing the GPS IIR-M upgrade that will incorporate two new military signals for enhanced accuracy and a second civil signal on a different frequency to eight existing GPS IIR spacecraft already built and held in storage. In addition, the modernized series will offer a modernized antenna panel that provides increased signal power to receivers on the ground, enhanced encryption and anti-jamming capabilities for the military.

The first upgraded GPS IIR spacecraft, designated GPS IIR-M1 or GPS IIR-14 (M), was launched by a Delta II rocket on 25 September 2005 at Cape Canaveral Air Force Station, Florida. Lockheed Martin and the US Air Force cleared the GPS IIR-14 (M) delivering civilian and military signals for operational use on December 19, 2005. The GPS IIR-15(M) was launched successfully by a Delta II rocket on 25 September 2006 from Cape Canaveral Air Force Station, Florida.

Parent system is the NAVSTAR
IOC: 1978
Total Production: 80
Total Cost: USD$7.6 billion
Other Family Members: GPS Block I, GPS Block II, GPS Block IIF and GPS Block III

Transactions: There are 1 transactions involving 8 items for NAVSTAR in 2014 view report

 

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:: Specifications ::

Dimensions
Height: 1,900 millimeter (6.23 foot)
Length: 1,930 millimeter (6.33 foot)
Width: 1.52 meter (4.99 foot)

Performance
Orbit: 20,200 kilometer (12,554 mile)
Positioning Accuracy: 7 meter

Time
Service Life: 10 year

Weight
Weight: 1,075 kilogram (2,370 pound)

:: News ::

There are 14 news between
31 Jan 2006
and
26 Feb 2010

1  2  

:: Operators ::

Operators
  Country   Items   Country   Items
  United States of America 21        

 

fully confirmed operational planned retired cancelled destroyed    

:: Spacecraft Listing ::

Spacecraft
  Name Flag   Carrier Launch Site Launch Date IOC Retired
  GPS IIR-16M Delta II Cape Canaveral Air Force Station 17 November 2006 19 December 2006 -
  GPS IIR-11 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-10 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-9 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-15M Delta II Cape Canaveral Air Force Station 25 September 2006 - -
  GPS IIR-14M Delta II Cape Canaveral Air Force Station 25 September 2005 2005 -
  GPS IIR-17M Delta II Cape Canaveral Air Force Station 17 October 2007 5 November 2007 -
  GPS IIR-18M Delta II Cape Canaveral Air Force Station 21 December 2007 16 January 2008 -
  GPS IIR-19M Delta II Cape Canaveral Air Force Station 15 March 2008 7 April 2008 -
  GPS IIR-20M Delta II Cape Canaveral Air Force Station 24 March 2009 - -
  GPS IIR-21M Delta II Cape Canaveral Air Force Station 17 August 2009 3 September 2009 -
  GPS IIR-12 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-13 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-8 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-7 Delta II Cape Canaveral Air Force Station 30 January 2001 15 February 2001 -
  GPS IIR-6 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-5 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-4 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-3 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-2 Delta II Cape Canaveral Air Force Station - - -
  GPS IIR-1 Delta II Cape Canaveral Air Force Station - - -

:: Image Gallery ::

There are 10 images added between
20 Nov 2006
and
4 Apr 2009

:: Notes & Resources ::

 

Last Updated:
Thursday, March 8, 2012
(*) lead contractor

IOC: Initial Operating Capability
FOC: Full Operating Capability
CEP: Circular Error Probable
Comm: Commissioning Date
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)

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