The Importance of Satellite Communication and ICT
Published by The function of an earth satellite station is to transmit and receive information frequency through microwave signals of a certain frequency. It has a large parabolic disc aerial. A communication satellite will amplify these microwave signals, convert them to another frequency and transmit them to other earth satellite stations. As the world becomes more sophisticated more modern communication methods and devices are introduced to the market.
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Geostationary Communication Satellites
The characteristics of a communication satellite are a) it orbits the Earth once every 24 hours b) it remains in the same spot above the Earth’s surface. It appears to be stationary in the sky. Hence transmitters and receivers on Earth do not need to move and track the satellite c) it orbits above the equatorial axis d) it orbits in the same direction and velocity as the earth and spins once in its axis. The world communication network uses at least three geostationary communication satellites.
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The Advantages of Satellites Communication
The advantages of using satellites for communication are as follows: a) the microwaves of used to carry information are not affected by the change of weather or hilly Earth surfaces b) only a small amount of energy is lost when the microwaves pass through the atmosphere c) more information can be transmitted compared to using metal cables d) the transmission covers a wide area, even in remote areas that have no communication lines e) live telecasts of some events can be broadcast simultaneously to various parts of the world.
Image by pauly… via Flickr
Other than communication, satellite are also used to: a) forecast weather conditions b) study and take photographs of structure on the surface of the Earth c) determine the position of objects such as ships, planes or vehicles on land d) carry out researches on celestial objects. Weather satellites photograph the Earth regularly in visible and infrared light. They provide data to weather stations on the Earth, thus enabling the forecast of weather conditions around the world.
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On June 28, 2009 at 8:40 am
Wow! you covered all the past and most recent inprovements in the lines of communication. Great informative article and super pictures.
On June 28, 2009 at 9:51 am
You have clearly explained an enormous amount of info here. So much I didn’t realize!! Thank you. Great article. Liz
On June 28, 2009 at 11:38 am
This was very informative. I have sons who are continually bombarding me with words like, LCD, GPRS, etc. Now I can listen to them without falling asleep.
On June 28, 2009 at 11:40 am
Well thought out article.
On June 28, 2009 at 1:29 pm
Very well researched and its really informative,Thanks for posting it.
On June 28, 2009 at 5:10 pm
Great, well researched article, Mr Ghaz.
On June 28, 2009 at 5:12 pm
Well done, but boy do I feel old now! (learned the morse code as a kid…)
Thanks,
Clay
On June 28, 2009 at 7:50 pm
Great presentation. Well done!
On June 28, 2009 at 8:53 pm
Times sure have changed!
On June 29, 2009 at 12:12 am
History of the communication ,well researched article.
On June 29, 2009 at 1:31 am
lots of information from the past to the present very interesting great history lesson for me enjoyed reading this
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On June 29, 2009 at 6:17 pm
Thanks for the information you shared with us. It is informative as all your articles are.
On June 30, 2009 at 4:30 am
Educational and informative, thank you, I enjoyed reading this.
On July 2, 2009 at 12:24 pm
I am not all that surprise because you are wonderful in your style of presentation. I am richly blessed and empowered. Thanks for sharing at least I have this FREE ARTICLE printed and documented.
On August 6, 2009 at 9:43 pm
Wonderful!
I am a secondary school teacher. I found this article very useful to introduce and enhance the interest of my students into knowing more about modern communicative gadgets.
TQ.
Sukumaran Suppiah,
Malaysia.
On October 5, 2009 at 1:37 am
You have explained the topics very clearly and easily with images. Hope you might provide more other topics such like this.
On August 26, 2010 at 10:54 am
WHAT IS THE ROLE OF COMMUNICATION SATELLITE ?? I WANT TO KNOW..
On February 26, 2012 at 12:32 am
not so brief.because if satellite does all things then what is the necessity of submarine cable.please answer me at imran130054@ovi.com