Pléiades-1A
| Pléiades-1A | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 France , Italy
|
| Operator: |
 CNES ,
|
| COSPAR-ID : | 2011-076F |
| Mission dates | |
| Dimensions: | 970 kg |
| Begin: | December 17, 2011 |
| Starting place: | Center Spatial Guyanais |
| Launcher: | Soyuz-2.1a |
| Flight duration: | 5 years |
| Status: | active |
| Orbit data | |
| Orbit inclination : | 98.2 ° |
| Apogee height : | 699 km |
| Perigee height : | 697 km |
Pléiades-1A is an Italian-French earth observation satellite . Together with its twin Pléiades-1B , it is part of the Orfeo satellite program .
Missions
Studies for the satellites began in September 2000, and actual development began in October 2003.
Pléiades-1A was launched into sun-synchronous earth orbit on December 17, 2011 by the Center Spatial Guyanais with a Soyuz-ST rocket together with four Elisa satellites for the French military and the Chilean satellite SSOT .
Structure and payload
The three-axis stabilized satellite is equipped with a camera with a primary mirror diameter of 65 cm, which achieves a resolution of 50 cm for color or black-and-white images and a resolution of 2 m for multispectral photos. The recordings are made by five line sensors with a width of 1500 pixels for multispectral and five line sensors with a width of 6000 pixels for the panchromatic area. The satellites and their orbits were designed in such a way that together they can record every area of the earth at least once a day. It was built by Thales Alenia Space and has a planned lifespan of five years.
Technical specifications
The satellite has a hexagonal basic structure and is equipped with three solar cell arms. The gallium arsenide solar cells deliver around 1500 watts and are supported by lithium-ion batteries. The cameras deliver data at 450 Mbits / s, with a 600 Gbit memory available on board. The stabilization is done with star sensors and gyros.
Web links
- CNES: Pleiades (English / French)
- Astrium: Pleiades
- PLEIADES-HR IMAGE SYSTEM PRODUCTS AND QUALITY (PDF; 218 kB)
Individual evidence
- ↑ April 2013
- ↑ Russian Soyuz rocket launches six satellites into space
- ↑ a b raumfahrer.net: Soyuz brings satellite sextet into space
- ↑ CNES: PLEIADES HIGH RESOLUTION SATELLITE