Türksat 4A
| Mission type | Communication |
|---|---|
| Operator | Türksat |
| COSPAR ID | 2014-007A |
| SATCATno. | 39522 |
| Mission duration | 15 years |
| Spacecraft properties | |
| Bus | MELCO DS2000[1] |
| Manufacturer | MELCO[1] |
| Launch mass | ~4,910 kilograms (10,820 lb) |
| Power | 7,670 Watts |
| Start of mission | |
| Launch date | February 14, 2014, 21:09:03UTC |
| Rocket | Proton-M/Briz-M |
| Launch site | BaikonurSite 81/24 |
| Contractor | ILS |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 42° East |
| Transponders | |
| Band | 28Kuband 2Kaband |
| Bandwidth | 1,750 megahertz (total) |
Türksat 4Ais a Turkishcommunications satellite,operated byTürksat.It was constructed byMitsubishi Electric(MELCO) of Japan, based on theMELCO DS2000satellite bus,[1][2]and was launched by the American-Russian joint-venture companyInternational Launch Services(ILS) atop a RussianProton-Mspace launch vehicle on February 14, 2014, at 21:09:03 fromSite 81/24of theBaikonur CosmodromeinKazakhstan.[3]
The in-orbit delivery contract for the satellite was signed in March 2011.[2]In the scope of the contract, Turkish engineers were trained in the facilities of MELCO in Japan.[4][5][6][7]During the official visit of Prime MinisterRecep Tayyip Erdoğanto Japan, the satellite was handed over by the Mitsubishi Electric to the Turkish officials in a ceremony on January 8, 2014.[8]
The initially planned launch date of Türksat 4A in November 2013 was postponed to February 2014 due to the suspension of the Proton-M launches because of problems, which arose on December 8, 2012.[5][9]
Türksat 4A is part of theTurksatseries of satellites, and was placed in a temporarygeosynchronous orbitat50°E,where it will remain around three months.[3]During this period, orbital and subsystem tests will be conducted.[3]Thenafter, the satellite will betransferredto42°Eto provide telecommunication and direct TV broadcasting services over a wide geographic region between west of China and east of England spanning Turkey, as well asEurope,Central Asia,theMiddle EastandAfrica.[2][3][5][6][10]
Right after the satellite reached orbit, mission control and operational support was taken over byGölbaşı Ground StationinAnkara,which will conduct performance tests around month long. The first signal from the satellite is expected to arrive 9 hours and 13 minutes after the launch.[3]
Türksat 4A has a mass of approximately 4,910 kg (10,820 lb) and an expected on-orbit life time of 15 years.[2]It will consist of 28Kuband,twoKabandand an undisclosed number ofC bandtransponders.[2][5][6]The use of Kaband will allow higher bandwidth communication, and thus reaching the southern regions of theSaharain Africa that was not possible with former Türksat satellites.[3]Türksat 4A will enable to cut cost of internet access, and will be also available for military-purpose broadcasting.[3]It is expected that Türksat 4A will increase the communications capacity of Turkey three-fold.[3]
See also
[edit]
References
[edit]- ^abcTURKSAT-4A/4BMitsubishi Electric
- ^abcde"Türksat 4A 42° East".Türksat. Archived fromthe originalon 2014-02-24.Retrieved2014-02-15.
- ^abcdefgh"Türksat 4A uzayda".Hürriyet(in Turkish). 2014-02-14.Retrieved2014-02-15.
- ^"TÜRKSAT 4A haberleşme uydularının imza töreni".HürriyetTeknoloji(in Turkish). 2011-03-07.Retrieved2013-01-20.
- ^abcd"ILS and MELCO Announce the Contract for Launch of the Turksat 4A and Turksat 4B Satellites on ILS Proton".ILS Launch.Retrieved2013-01-20.
- ^abc"Launch Schedule 2014".Satellite Launches. Archived fromthe originalon 2019-07-06.Retrieved2013-11-29.
- ^"TÜRKSAT-4A ve TÜRKSAT-4B Uydu İhalesi ve Uydu Üretim Teknoloji Transferi Projesi"(in Turkish). Türksat. Archived fromthe originalon 2012-08-21.Retrieved2013-01-20.
- ^"Turkish PM attends satellite hand-over ceremony in Tokyo".Hürriyet Daily News.2014-01-08.Retrieved2014-01-08.
- ^"Proton roketinde yaşanan 4 aylık fecikme Türksat-4A'yı olumsuz etkileyecek"(in Turkish). Uyduda Ne Var. 2013-01-12. Archived fromthe originalon 2014-01-08.Retrieved2013-01-20.
- ^"Türksat 4A coverages & footprints".Satellite Launches. 2011-10-09. Archived fromthe originalon 2019-04-16.Retrieved2013-01-20.