English Presentation SUSI ANDRIANI TIM-99 The Persevering Beauty of Aceh.
SUSI ANDRIANI [email protected] TIM-99
description
Transcript of SUSI ANDRIANI [email protected] TIM-99
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OVERVIEW
Satellite Technology GMPCS Definition Why GMPCS? GMPCS Operator Introducing ACeS
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moon
earth
sun
Satellite is any object that orbits or revolves around another object (For example : the moon is a satellite of earth,and earth is a satellite of a sun)
What is a satellite ?
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satellite as relay station in space send and receive messages from
anywhere on earth messages can be telephone calls,
TV pictures, fax, Internet connections have a wide coverage
What is communications satellites?
Satellite Technology
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Satellite Communication System
Mobile Network
Fixed Network
Gateway
TT & C Station
Satellite Operation
Center
Space segment Space segment
Ground segmentGround segment
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Satellite Technology
UPLINK DOWN-LINK
Space Station Space Station
Transmitting Earth Station
ReceivingEarth Station Ground Station Ground Station
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Geostationary Orbit (GEO) 36000 km Medium Earth Orbit (MEO) 5000 - 12.000 km Low Earth Orbit (LEO) 500 - 1500 km
GSO36000 km
non-GSO (LEO, MEO)500 - 12000 km
Satellite Orbits
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What is GMPCS ?
• Defined by the International Telecommunications Union (ITU) as, 'any satellite system (i.e., fixed (FSS) or mobile (MSS), global or regional, geo-stationary or non-geo-stationary, existing or planned) providing telecommunications services directly to the end-users from a constellation of satellites
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WHY GMPCS ?
• GMPCS networks will provide a unique technical solution to the limitations associated with terrestrial networks, offering messaging, voice, and data communications accessibility to anyone, anywhere, at anytime.
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World Telecommunication Policy Forum (WTPF) (Geneva, 21 - 23 October 1996)
WTPF
5 Opinions 1 The role of GMPCS 2 The shared vision and principles for GMPCS 3 Essential Studies by ITU 4 GMPCS MoU (Memorandum of Understanding) 5 Implementation of GMPCS in Developing Countries
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MEET THE PLAYERS ....
• Coverage : global, 10 satellites, MEO (103555 km), operational : 2000, Inmarsat (UK company)
• Coverage : global, 288 satellites, Internet in the Sky, LEO (700 km), operational : 2004, Bill Gates & Craig Mc Graw (US)
• Coverage : regional (Asia Pacific), GEO (35800 km), operational : August 2000 (launched : 12 February 2000), Indonesia
• Coverage : Global, 66 satellites, orbit : LEO (780km) operational : since 1998 --> GMPCS Pioneer
• Coverage : global, 48 satellites, orbit : LEO (14000 km), operational since 1999, US company
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INTRODUCING....
ASIA CELLULAR SATELLITE (ACeS)
http://www.aces.co.id
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Asia Cellular Satellite
.... Asia’s first Regional Mobile Satellite Telephony System .... allowing users to & from anywhere in ACeS Asian
footprint and around the world ACeS shareholders are :
PT. Pasifik Satelit Nusantara (Indonesia) The Philippines Long Distance Telephone Company (Philippine) Jasmine International of Thailand (Thailand) Lockheed-Martin Global Telecommunications (USA)
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ACeS launched ...
ACeS “Garuda 1” successfully launched on 12 February 2000 by International Launch Service (ILS)
Using “Proton” rocket from Baikonur, Kazahkstan
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ACeS Network
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ACeS Network
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ACeS Satellite
GARUDA 1 located at 123 degree East (GEO satellite) 11,000 simultaneous telephone channels & supporting to 2
million subscribers Frequency :
service Link : L-Band (1525 - 1559 MHz Uplink & - 1626.5 - 1660.5 MHz)
Feeder Link : Ext C-Band (6425-6725 MHz up-link & 3700 - 4200 MHz down-link)
Service life : 12 years Communications payload feature two 12-meter antennas 140 satellite spot beams
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Coverage
Asia Pacific (China, India, Pakistan, Indonesia, Thailand, Bangladesh, .... )
ACeS subscribers travelling outside the satellite coverage area can roam on GSM worldwide networks
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Gateways
..provide interface between ACeS and other telecommunication networks (e.g PSTN and PLMN)
... Located at Jakarta, Taiwan, Thailand & Philippine
12-meter antenna
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Satellite Control Facility
...monitor the Garuda satellite ...located at Batam Island,
Indonesia 15.5 meter tracking antenna
for links with the satellite
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Handset
Dual Mode (satellite - GSM 900) frequency :
Satellite 1500 - 1600 MHz L-Band GSM : 900 MHz
...made by Ericsson
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GARUDA 1 operational : August 2000 GARUDA 2 will launch in 2002 to cover Africa & a part
of Europe
ACeS Future Plan
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THANK YOU !