SARAL
| SARAL | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 India , France
|
| Operator: |
 ISRO , CNES
|
| COSPAR-ID : | 2013-009A |
| Mission dates | |
| Dimensions: | 409 kg |
| Size: | 0.98 x 0.98 x 2.6 m |
| Begin: | February 25, 2013 |
| Starting place: | Satish Dhawan Space Center |
| Launcher: | PSLV-CA |
| Flight duration: | 5 years |
| Status: | active |
| Orbit data | |
| Track height: | 785 km |
| Orbit inclination : | 98.5 ° |
SARAL ( S atellite with AR gos and AL TIKA) is an Earth observation satellite, the Indian ISRO and the French space agency CNES .
It was launched on February 25, 2013 at 12:31 UTC with a PSLV launcher together with the Canadian NEOSSat and Sapphire , the Austrian TUGSat 1 and UniBRITE , the British STRaND 1 and the Danish AAUSAT from the launch pad No. 1 of the Indian Satish Dhawan Space Center placed in sun-synchronous Earth orbit on Sriharikota Island .
Structure and Mission
The three-axis stabilized satellite is having a Ka-band operating (35.75 GHz) radio altimeter (ALTIKA), a system for accurate orbit determination (DORIS), a laser reflector array (LRA) and a transponder system ( Argos-3 equipped). Altika is to provide exact data on the topography of the surface of the world's oceans and thus to continue the measurements carried out by the radio altimeter RA-2 on board Envisat . The data obtained are to be processed by the French ground segment SALP (Système d'Altimétrie et de Localization Précise), which has already been used to evaluate the data from the altimeters of the Envisat, GFO , Jason 1 and 2 and TOPEX / Poseidon satellites . Argos-3 can also be used to observe the oceans, as the transponder transmits data from buoys on the sea surface, such as wind speed and wave height. The observation payload was developed by CNES with the support of Thales Alenia Space and arrived on July 11, 2012 in Bangalore, India, at the ISRO satellite center ISAC . The corresponding contract to build the satellite was signed in February 2007. Power is supplied by two 1.4 m long and 1.2 m wide solar cell booms that deliver 570 W, with around 204 W required for the satellite bus and around 195 W for the observation payload. Energy is stored by a lithium-ion battery set with a capacity of 21 Ah. An S-band communication system is available for telemetry. SARAL was based on the IMS 2 - satellite bus built the ISRO and has a design life of 5 years, with ALTIKA is designed for a service life of three years.
Of the 82 kg Near Earth Object Surveillance Satellite (Near Earth Object Surveillance Satellite Space) is the first of the Canadian Space Agency (CSA, Canadian Space Agency equipped designed) space telescope and is observing near-Earth objects and space debris serve. The approximately 148 kg Sapphire, built by MacDonald, Dettwiler and Associates (MDA), serves the same purpose and monitors objects at heights between 6,000 and 40,000 kilometers using an optical sensor system. The 14 kg TUGSat 1 ( Graz University of Technology ) and UniBRITE ( University of Vienna ) are to be used as part of the international BRITE project (BRIght Target Explorer) with the participation of institutes in Austria, Canada and Poland, with brightness fluctuations and temperatures of stars up to one magnitude from 4 capture. The technology test satellite STRaND 1 is equipped with smartphone technology and a plasma engine. The 3 kg AAUSAT of the Ålborg University Center, in turn, is supposed to monitor international shipping traffic as part of the Automatic Identification System (AIS).
Web links
- CNES: SARAL / AltiKa
Individual evidence
- ↑ a b CNES: Saral Satellite
- ↑ a b c Thomas Weyrauch, Günther Glatzel: PSLV brings 7 satellites into space on raumfahrer.net, February 25, 2013, 6:35 pm
- ↑ CNES: PowerPoint Presentation - 05 Pierre SARAL-AltiKa San Diego EAST 2011 21 October 2011 (PDF)