SCATSAT-1
| SCATSAT-1 | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 India
|
| Operator: | ISRO |
| COSPAR-ID : | 2016-059H |
| Mission dates | |
| Dimensions: | 371 kg |
| Begin: | September 25, 2016 at 3:42 UTC |
| Starting place: | Satish Dhawan Space Center |
| Launcher: | PSLV C-35 |
| Status: | in orbit |
| Orbit data | |
| Rotation time : | 99.3 min |
| Orbit inclination : | 98.1 ° |
| Apogee height : | 740 km |
| Perigee height : | 725 km |
SCATSAT-1 (abbreviation for Scatterometer Satellite-1 ) is an earth observation satellite of the Indian space agency ISRO .
It was launched on September 25, 2016 at 3:42 UTC with a PSLV launcher from the Satish Dhawan Space Center rocket launch site (together with Alsat-1B 103 kg, Alsat-1N 7 kg and 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. The satellite is to serve as an interim solution to OceanSat-3 after the main instrument of OceanSat-2 failed in February 2014 . SCATSAT-1 was built with partly on the basis of leftover parts of OceanSat-2.
The three-axis stabilized satellite with a Ku-band - scatterometer equipped and designed to measure wind speeds and wind directions on the oceans. It was built on the basis of the IMS-2 satellite bus from ISRO and has a planned service life of five years. The main instrument is the OSCAT-2 (an improved version of the one on OceanSat-2 with an improved motor and various hardware and software improvements) is a radar operating in the gigahertz range (13.515 GHz) with two beams. These scan the earth's surface beneath the satellite with a one meter antenna rotating at 20.5 revolutions per minute and determine the wind speeds in the range from 3 to 30 m / s with an accuracy of about 2 m / s. The surface scanned per revolution is 1400 or 1840 km in diameter, since the rays are emitted at an angle of 42.6 ° or 49.3 ° deviating from the vertical. The wind direction can be determined with an accuracy of 20 ° and with a spatial resolution of cells of about 25 km. The satellite is supplied with energy by two solar panels with a total output of 750 watts and lithium-ion batteries with a capacity of 28 Ah. The path and position control are carried out by reaction wheels , magnetic torques and hydrazine engines. The data transmission to earth takes place in the X-band , whereby the data is stored internally on an SSD with 52 GB.
Web links
- ISRO: Operator website (English)
- eoPortal: SCATSat-1 (Scatterometer Satellite-1) (English)
Individual evidence
- ↑ Orbit data according to SCATSAT 1. N2YO, October 9, 2016, accessed on October 9, 2016 (English).
- ↑ a b ISRO PSLV conducts SCATSAT-1 launch. nasaspaceflight.com, September 26, 2016, accessed September 26, 2016 .
- ↑ coaps.fsu.edu: ISRO's Scatterometery Program , accessed on September 28, 2016
- ↑ eoportal.org: SCATSat-1 - Satellite Missions - eoPortal Directory , accessed on September 28, 2016