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Saturday, 23 June 2018 

Application of Satellite Communication

Artificial earth satellites have been used for more than 40 years and satellite communications form a unique part of daily routine life which serving billions of people and granting access to a vast range of voice, data and video telecommunication applications.

Why we need satellite communication? Satellite communication able to provide:

  • Long distance education. Article on Tele-Education
  • Entertainment - Broadcasting via satellite offers a variety of programming to the avid viewer including local and foreign programs.
  • do serve civilian in rural area where terrestrial communication network does not exist by providing telephony service.
  • In military sector, providing robust and sophisticated secure communications network
  • to provide communication when the terrestrial systems fail due to disaster such as earthquake, volcanic eruption  floods, drought, cyclones, landslides and epidemics.
  • Tele-medicine

Credit to: Satmagazine

Satellite communication services categorize as below: 

Broadcasting Satellite Services
Broadcasting Satellite system is the services for distribution of video and audio streams through satellite. Usually utilize Ku-Band and propagate circular polarization wave pattern; however there is a trend for Ka-Band for broadband application. Astro is a subscription-based direct broadcast satellite (DBS) or direct-to-home satellite television and radio service initially in Malaysia and is broadcast high-power Ku-band  transmissions utilizing the transponders of the MEASAT satellite system. Credit to: Astro

Fixed Satellite Services
The services implement Point to Point communication and network via satellite between fixed Stations and utilize C-Band and lower power portion of Ku-Band spectrum. Very Small Aperture Terminal (VSAT) is an application for fixed Satellite Services.  VSAT services provide wide area coverage, offers borderless communication within the satellite coverage area and reachable to remote areas with digital transmission such as oil rig far out at sea and a station in a dense tropical jungle. VSATs are most commonly used to transmit narrowband data (point of sale transactions such as credit card), or broadband data (for the provision of Satellite Internet access to remote locations, VoIP or video). Credit to: Fixed Satellite Services

Mobile Satellite Services
The Services implement Point to Point communication and network via satellite between mobile stations.  Services are available to the maritime users and land users in any locations that require long distance portable telephony, fast and instantaneous communications setup. Satellite phone is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell sites. Depending on the architecture of a particular system, coverage may include the entire Earth, or only specific regions.  Credit to:Commsat Application




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