Paz (satellite)
| Paz | |
|---|---|
|
|
| Type: | Earth observation satellite |
| Country: |
 Spain
|
| Operator: | Hisdesat |
| Mission dates | |
| Dimensions: | 1350 kg |
| Size: | 2.4 m diameter, 5 m height |
| Begin: | February 22, 2018, 14:17 UTC |
| Starting place: | VAFB SLC 4E |
| Launcher: | Falcon 9 |
| Status: | in orbit |
| Orbit data | |
| Track height: | 514 km |
| Orbit inclination : | 97.44 ° |
Paz ( Spanish for "peace") is a radar satellite owned by the Spanish Hisdesat . Together with the optical earth observation satellite Ingenio , Paz is to form the Programa Nacional de Observación de la Tierra por Satélite (PNOTS). The satellite was built by a consortium led by Airbus Defense and Space (Spain).
construction
Paz uses Synthetic Aperture Radar in the X-band. The data can be kept on board in a 256 GB memory and then sent back to earth at a rate of 300 Mbit / s. The X-band at approx. 9.65 GHz is also used here. To ensure that the downlink transmission does not impair the radar instrument, the transmitting antenna is mounted on a boom that is only unfolded in space. The radar antenna has dimensions of 4.8 and 0.7 m.
task
The fact that Paz can create radar images in any weather and at any time of the day results in many civil and military uses.
Different resolutions are available:
- Spotlight: 10 km × 5 km with 1 m resolution or 10 km × 10 km with 2 m resolution
- ScanSAR: strips of 100 km swath width at 15 m resolution
- Stripmap: strips of 30 km swath width with 3 m resolution (single polarization) or 15 km swath width with 6 m resolution (double polarization). Over 200 radar images should be created per day.
The ground station for Paz and Ingenio is in Torrejón de Ardoz near Madrid. Maspalomas on the Canary Islands acts as a replacement station . Both stations are operated by the Instituto Nacional de Técnica Aeroespacial (INTA).
Cooperation with Astrium
In April 2012, Hisdesat and Astrium signed a framework agreement for the joint coordination of their radar satellites Paz, TerraSAR-X and TanDEM-X . Each of the two operators is responsible for its own satellites, but the satellites are coordinated jointly. The recording qualities are matched to one another so that the customers can be offered the desired recordings faster or at shorter intervals.
Mission history
Hisdesat commissioned Astrium to build Paz on November 6, 2008. Astrium handed the satellite over to Hisdesat on September 17, 2013.
The launch of Paz was scheduled for 2015 and should take place with a Dnepr rocket from the Jasny Cosmodrome in Russia. After 18 months of delay, the contract between Hisdesat and the Dnepr operator Kosmotrans was canceled. On March 7, 2017 it was announced that the satellite in Q4 2017 with a Falcon 9 by SpaceX to start, but even this date could not be maintained.
Paz took off on February 22, 2018 at 14:17 UTC with a Falcon 9 from Vandenberg AFB Space Launch Complex 4 .
Web links
- PAZ SAR satellite mission of Spain . ESA (English)
- Paz . Gunter's Space Page (English)
Individual evidence
- ↑ a b c d PAZ SAR satellite mission of Spain. ESA, accessed March 28, 2014 .
- ↑ TerraSAR-X & PAZ Constellation. New Radar Satellite Constellation Improves Coverage and Access. (No longer available online.) Airbus Defense & Space, April 2012, archived from the original on March 9, 2018 ; accessed on June 12, 2017 (English). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b Gunter Krebs: Gunter's Space Page: Falcon-9 v1.2. June 2, 2017, accessed October 9, 2017 .
- ↑ Astrium: Successful integration of the PAZ satellite. (No longer available online.) Astrium September 17, 2013, archived from the original on April 13, 2014 ; accessed on March 28, 2014 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Miguel González: Spain cancels 'spy' satellite launch contract with Russian company. El País, July 20, 2016, accessed July 21, 2016 .
- ^ Hisdesat Commits Launch of PAZ Satellite to SpaceX. (No longer available online.) Hisdesat, March 7, 2017, archived from the original on August 22, 2017 ; accessed on June 12, 2017 (English). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
