|
Technical Specifications
The GPS satellite
vehicle numbers (SVN) 1 through 11 are designated as Block I. The
Block I satellites are/were positioned in the same orbital planes
as the Block II, but at an inclination angle of 63 degrees. Block
I consisted of the original concept validation satellites and
reflect various stages of system development. Lessons learned from
the 11 satellites were incorporated into later blocks.
In 1974 Rockwell
International was awarded a contract to build 8 Block I
satellites. In 1978 the contract was extended to build an
additional 3 Block I satellites.
NAVSTAR GPS/Block I Satellites |
| PAYLOAD
CAPABILITIES |
| Types of Services |
Navigation |
| Downlink frequencies |
1572.42 MHz and 1227.6 MHz (L-Band) 2227.5
MHz (S-Band) |
| CORE BUS
SPECIFICATIONS |
| Prime Contractor |
Rockwell
International |
| Platform |
-
|
| Launch Mass |
759
kg (1673 lbm) |
| Design Life |
5
years |
STRUCTURE |
| Dimensions (H x W x L) |
|
| Construction |
aluminum
honeycomb panels |
POWER SYSTEM |
| Payload Power
(EOL) |
0.410
kw |
| Solar Arrays |
2
silicon panels |
| Batteries |
3
- 15 cell Ah NiCd |
ATTITUDE CONTROL SYSTEM |
| Stabilization |
|
|
