Alsat-1B
| Alsat-1B | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 Algeria
|
| Operator: | ASAL |
| COSPAR-ID : | 2016-059C |
| Mission dates | |
| Dimensions: | 103 kg |
| Begin: | September 26, 2016 at 03:42 UTC |
| Starting place: | Satish Dhawan Space Center |
| Launcher: | PSLV-G C35 |
| Status: | active |
| Orbit data | |
| Rotation time : | 98.4 min |
| Orbit inclination : | 98.2 ° |
| Apogee height : | 712 km |
| Perigee height : | 669 km |
Alsat-1B 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, Alsat-2B 117 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 to the Alsat-1A satellite.
The three-axis stabilized satellite is equipped with six imaging systems which together achieve a resolution of 12 m panchromatic and 22 m multispectral and a swath width of 660 km. The camera system weighs 12 kg together, is 31 × 26 × 24 cm in size and has an electrical output of 24 watts. Each of these six systems consists of a linear sensor with 14400 pixels with its own optics and color filter. The systems are arranged in two banks with three sensors each, arranged next to one another, whereby the recording areas of the two banks overlap by 500 pixels, resulting in an image width of 28,300 pixels. The three color filters are matched to the recording bands of the Landsat satellites and are in the green (523–605 nm), red (629–690 nm) and near infrared (774–900 nm) range. It was built on the basis of the SSTL-100 satellite bus from Surrey Satellite Technology Ltd (SSTL) and has a planned service life of five years. The satellite bus offers reaction wheels and magnet torquers for position control which are controlled with the help of sun and star sensors as well as magnetometers . In addition, the satellite bus has small engines with 50 mN of thrust from electrically heated butane . The energy supply is provided by solar cells that are installed on the surface of the cube-shaped satellite and on small fold-out solar cell surfaces and lithium-ion batteries with a capacity of 15 Ah. The on-board computer has a storage capacity of 16 GB, data transmission to earth takes place in the X-band with up to 80 Mbps, the telemetry takes place in the S-band . Alsat-1B was ordered from SSTL in July 2014 and is intended to serve disaster control and resource management.
Web links
Individual evidence
- ↑ Orbit data according to ALSAT 1B. 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-1B - PSLV C35 | Spaceflight101 , accessed October 2, 2016