Alsat-2B
| Alsat-2B | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 Algeria
|
| Operator: | Agence Spatiale Algérienne |
| COSPAR-ID : | 2016-059D |
| Mission dates | |
| Dimensions: | 116 kg |
| Size: | 0.6 × 0.6 × 1.0 m |
| Begin: | September 26, 2016, 03:42 UTC |
| Starting place: | Satish Dhawan Space Center |
| Launcher: | PSLV-G C35 |
| Status: | active |
| Orbit data | |
| Rotation time : | 98.2 min |
| Orbit inclination : | 98.2 ° |
| Apogee height : | 682 km |
| Perigee height : | 677 km |
Alsat-2B is an Algerian earth observation satellite belonging to the Algerian space agency ASAL .
It was launched on September 26, 2016 at 3:42 UTC with a PSLV launcher from the Satish Dhawan Space Center rocket launch site (together with SCATSAT-1 371 kg, Alsat-1N 7 kg and Alsat-1B 103 kg, SpaceMag-PV 10 kg, CanX-7 8 kg, Pathfinder 1 44 kg, PISat 5 kg) brought into a sun-synchronous orbit. It is the successor and largely identical to the Alsat-2A satellite.
The three-axis stabilized satellite is equipped with a camera system called NAOMI (New Astrosat Observation Modular Instrument) and, in addition to cartography, is also intended to obtain information for agriculture, forestry and water management, support the search for natural resources and the planning of land use and help with disaster control. It was built on the basis of the AstroBus-100 satellite bus from EADS Astrium (now Airbus Defense and Space) and ordered in 2006. NAOMI is an optical telescope with a main mirror diameter of 200 mm, which achieves a panchromatic resolution of 2 meters and 8 meters in four individual spectral ranges . In addition to Alsat-2A and Alsat-2B, it was also used in KazEOSat-1 , SPOT-6 and 7, SSOT and VNREDSat-1A . The system contains five line sensors, one sensor with 7000 pixels resolution for panchromatic images and four sensors with 1750 pixels each for multispectral images. The bandwidth of the panchromatic sensor is 450 to 750 nm, that of the four multispectral bands blue (450–520 nm), green (530–600 nm), red (620–690 nm) and near infrared (760–890 nm). The swath width of the telescope is 20 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 (800 km). The data transfer takes place in the X-band with 60 Mbit / s for the image data and two S-band transceivers for the telemetry. The energy supply is provided by a solar cell boom made of two elements, which provides a maximum of 180 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 planned lifespan for the satellite is given as at least five years. For orbit correction maneuvers, the satellite carries 4.7 kilograms of hydrazine for its corresponding engines. The stabilization takes place with the help of a star , three sun sensors , a three-axis magnetometer , four reaction wheels and three magnetic torquers .
Web links
Individual evidence
- ↑ eoportal.org: AlSat-2 - eoPortal Directory - Satellite Missions , accessed on October 2, 2016
- ↑ Orbit data according to ALSAT 2B. N2YO, October 9, 2016, accessed October 9, 2016 .
- ↑ ISRO PSLV conducts SCATSAT-1 launch. nasaspaceflight.com, September 26, 2016, accessed September 26, 2016 .
- ↑ Spaceflight 101 : AlSat-2B - PSLV C35 | Spaceflight101 , accessed October 2, 2016