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GPS - Launch Log / Manifest Schedule |
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There are four
generations of the GPS satellite: the Block I, Block II/IIA, Block
IIR and Block IIF. Block I satellites were used to test the
principles of the system, and lessons learned from those 11
satellites were incorporated into later blocks. Block II and IIA
satellites make up the current constellation. The third generation
Block IIR satellites
are currently being deployed as the Block II/IIA satellites reach
their end-of-life and are retired. Block IIF satellites will be the fourth generation of satellites and will be
used for operations and maintenance (O&M) replenishment.
Table
1: GPS Satellite Planes/Slots
Click
on individual cells for more information on the satellite.
Note:
Nomenclature used in this table: Block number (2, 2A or
2R), satellite within block. In parentheses, USAF space vehicle
number of GPS satellite. Satellites GPS 2-1
(14),
2-3
(16), 2-6
(18), 2-7
(20)
and
2A-13 (28) have been retired. GPS 2R-1 (42) was destroyed in a
Delta launch failure in January 17, 1997.
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Copyright 2001 - Andrews Space & Technology
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