Satellite radio channels - computer network, Computer Networking

Satellite Radio Channels

A communication  satellite links two or more  earth  microwave transmitter receiver, know  as ground  stations. The satellite receives transmission on one frequency  band,

Regenerates the signal  a repeater and transmits the signal  on another  frequency. Satellites can provide  transmission rates in the gigabits per second  range. Two  types  of satellites are used in communication  geostationary satellites and low altitude satellites.

Geostationary satellite permanently remain above  the same spot  on earth. This  stationary  presence is achieved by placing he satellite in orbit at 36,000kilometers above earth surface. This  huge distance from ground station through satellite back to ground stations introduces a substantial signal propagation  delay  of 250 milliseconds. Nevertheless  satellite links which  can operate at  the  speeds of hundreds of Mbps are  often  used in telephone  networks  and is  the backbone  of the internet.

Low  altitude  satellites are placed much  closer to earth and do  not remain  permanently above one spot on earth. They rotate around  earth  just as the moon  does.

 To  provide continuous  coverage to an area many  satellites need to be placed orbit. Low  altitude satellite technology may be used  be used for internet access sometimes in the future.

 

 

Posted Date: 3/4/2013 1:21:45 AM | Location : United States







Related Discussions:- Satellite radio channels - computer network, Assignment Help, Ask Question on Satellite radio channels - computer network, Get Answer, Expert's Help, Satellite radio channels - computer network Discussions

Write discussion on Satellite radio channels - computer network
Your posts are moderated
Related Questions

Q. Why it is essential to have layering in a network? Ans: A computer network is a very complicated system. It becomes very hard to implement as a single entity. The layered ap

Define Encoder? A device or program that uses predefined algorithms to encode, or compress audio or video data for storage or transmission use. A circuit that is used to change

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 What is overlapping

In case of any new event switch do broadcast, after that always do Unicast.

Originally Linux/UNIX systems had one all-powerful user called root that managed systems. Discuss the risks of having a single root user and how more limited management abilities c

Parallel Programming Environment Characteristics  The parallel programming environment consists of an debugger, a editor,  performance evaluator and programme visualizer for i

Q. Single Mode for transmitting optical signals? - Merely one beam from a light source is transmitted using a smaller range of angles - Smaller diameter as well as lower de

What is Network Server? Network Server is a computer in Network that is designated to give one or more network service. For instance file server, database server etc.

Link Layer To move  to packet  from one node( host  or packet swtich0 to  net node  in the  route the network  layer  relies  on the  services  of the link layer. Particularl