E N D
1. Lt Gen Michael Hamel
Commander
Space and Missile Systems Center
3. Overall GPS program reached IOC in 1993 and FOC in 1995
SVs
Block I SVs (11) launched between 1978 and 1985
Block II SVs (28) launched Feb 1989 – Sep 1996
Block IIR SVs (21) started launching Jan 1997
Space segment consists of 24 operational SVs at a minimum in 6 circular orbits ~11,000NM above the earth at an inclination angle of 55 degrees with a 12-hr period. SVs are spaced so that at any time, a minimum of 6 SVs are in view
GPS SVs are in a Middle Earth Orbit (MEO)
Need to receive signals from at least 4 SVs to get a 3-dimensional position, velocity, time (PVT) Overall GPS program reached IOC in 1993 and FOC in 1995
SVs
Block I SVs (11) launched between 1978 and 1985
Block II SVs (28) launched Feb 1989 – Sep 1996
Block IIR SVs (21) started launching Jan 1997
Space segment consists of 24 operational SVs at a minimum in 6 circular orbits ~11,000NM above the earth at an inclination angle of 55 degrees with a 12-hr period. SVs are spaced so that at any time, a minimum of 6 SVs are in view
GPS SVs are in a Middle Earth Orbit (MEO)
Need to receive signals from at least 4 SVs to get a 3-dimensional position, velocity, time (PVT)
4. Launched a new era of GPS services
First GPS IIR-M (14) launched 25 Sep 05, operational on 16 Dec 05
New military signal (M-Code) and new civil signal (L2C)
GPS IIR-M (15) launched 25 Sep 06
Fielded operational improvements
Legacy Accuracy Improvement Initiative--improves accuracy 10-50%
Provide “zero age of data” to warfighters
Continue to mature GPS Ops Center (GPSOC) capabilities
New acquisition strategies for next generation GPS
GPS III satellites – block development approach
OCX Operational Control Segment – incremental design -development
MUE/MSR – Modernized User Equipment/Modernized Space Receiver contracts underway/in work
Established new USG interagency GPS governance processes – National PNT EXCOM (NPEC) and Coordinating Office (NPCO)
5. GPS IIR-15(M) Launched Monday,
25 September 2006
1450 Eastern time
Cape Canaveral, FL
Second Modernized
Block IIR satellite
Will broadcast PRN Code 31
Anticipate setting healthy mid-October
6. Plaque on GPS IIR-15(M)
7. Continuous Performance Improvement
8. Sustaining capabilities for military and civil users worldwide
Maintain ground systems/on-orbit satellites, launch new satellites – partnership across AF Space Command
Fielding GPS enhancements, such as L-AII
Modernizing constellation with new signals and capabilities
Second IIR-M launch Sep 06, first IIF launch 2008, first III launch 2013
New civil and military GPS signals
Transitioning control segment from legacy to new Ops Control Segment (OCS) in Spring ‘07
Continuing work with Galileo and international community
Developing next generation of GPS
Acquisition strategies for space, ground, and user segments
Synchronizing space, control, and user equipment upgrades
Managing GPS systems & supporting stakeholders
Technical baselines, interfaces, performance
Supporting/participating in key fora – NPEC/NPCO, DSB, IRT, ION