satellite radio ppt

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Published on August 27, 2012

Author: donitsv2h

Source: authorstream.com

PowerPoint Presentation: SEMINAR ON “SATELLITE RADIO” Guided By : Prof.V.J.Dongre By : Vishal Hajare Contents: Contents Satellite Radio Basic Components Of Satellite Radio WorldSpace Frequency Of Satellite Radio Conclusion Satellite Radio: Satellite Radio Satellite radio is a subscriber based radio service that broadcast directly from satellites. It is an advanced form of mobile radio service where one can receive compact disc quality music and other entertainment channels. Even if the person is miles away from the radio station, the quality of the program is not affected Basic Components Of Satellite Radio : Basic Components Of Satellite Radio The Three Satellite Radio Systems: Communication Satellites Ground Repeaters Radio Receivers Communication Satellite: Communication Satellite Communication Satellite are man made satellites that orbits earth providing a multitude of communication functions to a wide variety of customers, including military, governmental, private & commercial subscribers. Communication satellite is consist of diverse of combinations like : transmitter, receiver, amplifier, regenerator, filter, mux, demux, antenna, waveguide, and about any other electronic communication circuit ever developed. Ground Repeaters: Ground Repeaters Satellite radio reception, poses threats from weather, tall building and mountains that can potentially interfere with broadcasts. To avoid the interference caused by tall structures, both Sirius and XM Radio are supplementing their satellite coverage with terrestrial transmitters, called ground repeaters. Earth Orbits : Earth Orbits PowerPoint Presentation: 8 Low Earth Orbits Height: 700-2000 km Rotation Period: 90 min. Medium Earth Orbits Height: 8000-12000 km Rotation Period: 5-12 hrs. Geostationary Orbits Height:35,780 km Rotation Period: 24 hrs. GSO NGSO Orbits The Satellite Radio Receiver: The Satellite Radio Receiver Existing AM/FM car radio will not be able to receive satellite radio broadcasts. Replacement of the radio with a 3-band capable receiver (AM, FM, Sirius or XM Satellite). Satellite Radio Receiver: Satellite Radio Receiver XM Satellite Radio: XM Satellite Radio United States and Canada 73 music, 39 news, sports and entertainment, 29 regional traffic and weather, 23 play-by-play sports. Geostationary Earth orbit (GED) is about 22.223 miles (35,780 km) above Earth, and is the type of orbit most commonly used for communications satellites Sirius Satellite Radio : Sirius Satellite Radio Operated in the United States and Canada Provides 69 channels of music 65 channels of news, sports and entertainment Broadcast 24 hours a day commercial free from three satellites WorldSpace: WorldSpace Covers Asia, Europe, and Africa AfriStar (serves Africa) and AsiaStar (serves Asia and Europe) WorldSpace satellite receivers are capable of receiving data at a rate of 128 kilobits per second (Kbps). Technology: Technology 25 MHz in S band 2 multichannel operators 2320-2332.5 MHz ( Sirius ) 2332.5-2345 MHz ( XM ) AM/FM/SAT receivers Spring 2006 14 Frequency Of Operation: Frequency Of Operation Satellite radio is operated in a frequency range of between 215 - 230 MHz (Mega Hertz). This part of the radio spectrum is sometimes called Band III, or VHF, and was previously used for some television transmissions and by the military. Satellite Radio vs. Others: Satellite Radio vs. Others Listening availability- SR very high, others are moderate to low Sound Quality-SR high, AM=very low, FM=High Variety-SR Highest, Variable due to economic factors Advantages: Advantages Works in enormous range Absence of Static No commercial Interrupt Applications Of Satellite Radio: Applications Of Satellite Radio Multimedia Content Television Transmissions Military purpose Conclusion : Conclusion It will be an intelligent communications device that will offer more services and conveniences than can be provided by conventional analog technology. For the broadcaster, satellite radio is not just a way to stay competitive with other forms of digital sound, but one that offers numerous new business opportunities as well. It is a bright future for listeners and broadcasters alike: a future that truly promises to provide 'the best sound on the airwaves' for the world. References: References http://www.seminar.com/article/sdr_1.html, http://www.spinnakerlabs.com/Satellite digital radio.pdf http://www.worldspace.com http://xmradio.com/whatisxm/index.xmc http://www.seminarsonly.com THANK YOU…!: THANK YOU…!

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