|
Technical Specifications
The BLOCK II
satellites, space vehicle numbers (SVN) 13 through 21, were the
first full scale operational GPS satellites. Block II satellites
were designed to provide 14 days of operation without contact from
the control segment.
In 1981 Rockwell was
awarded a contract to build a qualification satellite GPS SVN 12,
which was never launched. In 1983 Rockwell was awarded a contract to build 28 Block
II/IIA satellites.
NAVSTAR GPS/Block II 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 |
1660
kg (3660 lbm) |
| Design Life |
7.5
years |
STRUCTURE |
| Dimensions (H x W x L) |
|
| Construction |
aluminum
honeycomb panels |
POWER SYSTEM |
| Payload Power
(EOL) |
0.710
kW |
| Solar Arrays |
2
silicon panels |
| Batteries |
3
- 35 cell Ah NiCd |
ATTITUDE CONTROL SYSTEM |
| Stabilization |
3-axis
stabilized |
|
