Alsat-2A
| Alsat-2A | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 Algeria
|
| Operator: | Agence Spatiale Algérienne |
| COSPAR-ID : | 2010-035D |
| Mission dates | |
| Dimensions: | 117 kg |
| Begin: | July 12, 2010, 03:52 UTC |
| Starting place: | Satish Dhawan Space Center |
| Launcher: | PSLV C-15 |
| Status: | active |
| Orbit data | |
| Rotation time : | 98.2 min |
| Orbit inclination : | 98.1 ° |
| Apogee height : | 680.6 km |
| Perigee height : | 678.6 km |
Alsat-2A is an Algerian earth observation satellite belonging to the Algerian space agency ASAL . It was manufactured by EADS Astrium , belongs to the AstroSat 100 series and is based on the Myriade satellite bus . The client was the Algerian National Center for Space Technology ( Center National des Techniques Spatiales , CNTS). The construction contract was signed in February 2006.
construction
Alsat-2A is the successor to the Alsat-1 satellite launched on November 28, 2002 and, in addition to cartography, is also intended to provide information for agriculture, forestry and water management, support the search for mineral resources and the planning of land use and help with disaster control . A telescope called NAOMI for New Astrosat Observation Modular Instrument with a mirror diameter of 200 mm is on board, which achieves a resolution of 2.5 meters panchromatic and 10 meters in four individual spectral ranges . The swath width of the telescope is 17.5 kilometers, whereby the satellite flies over the same point on the earth's surface about every three days and the telescope can take pictures up to 35 ° outside the orbit plane. The data transfer takes place in the X and S band. The energy supply is provided by a solar cell boom made of two elements, which provides a maximum of 175 watts of electrical power for the operation of the satellite systems and is supported by lithium-ion batteries with a total capacity of 15 ampere hours . The specified service life is at least five years. For orbit correction maneuvers, the satellite carries 4.5 kilograms of hydrazine for its corresponding engines. The stabilization takes place with the help of star and sun sensors, reaction wheels, gyroscopes and GPS.
begin
The launch took place on July 12, 2010 at 05:52 CEST together with four other satellites with the PSLV C15 rocket from the Satish Dhawan Space Center , although the PSLV was not equipped with boosters at this launch . The main payload Cartosat-2B was the first satellite to be launched after 1034 seconds at an altitude of around 637 kilometers above the earth's surface in a circular sun-synchronous orbit with an orbit inclination of around 98.1 °. Then the 116 kg Alsat-2A was separated and finally the three nano and pico satellites Studsat from India, AISSat-1 from Norway and TIsat-1 from Switzerland were also exposed.
Alsat-2B
The structurally identical Alsat-2B was manufactured in the Algerian space development center Center de développement spatial in Oran and launched on September 26, 2016. Due to the extended lifetime of 2A, it can now be used together with 2B
Web links
- Astrium: Successful start of ALSAT-2A
- Astrium, ASAL: ALSAT-2 programs (English; PDF; 3.9 MB)
- ASAL: Homepage (French)
Individual evidence
- ↑ Orbit data according to ALSAT 2A. n2yo, August 2, 2012, accessed August 3, 2012 .
- ↑ Gunter Dirk cancer: Alsat 2A, 2B. In: Gunter's Space Page. September 27, 2009, accessed March 25, 2012 .
- ↑ Thomas Weyrauch: PSLV-C15 brings five satellites into space. Raumfahrer.net, July 12, 2010, accessed July 13, 2010 .
- ↑ Mounir Kechar: Le troisième satellite algérien, ALSAT.2B, sera réalisé à Oran. AlgerlaBlanche, April 26, 2011, accessed February 3, 2012 (French).
- ↑ [1]
- ^ William Graham: ISRO PSLV conducts SCATSAT-1 launch. nasaspaceflight.com, September 25, 2016, accessed September 30, 2016 .