Satellite Visibility and Availability A Ganesh and R Narayanakumar The satellite visibility and availability is an essential parameter for precise positioning and surveying. Users of GPS must know where‚ when and what satellites should be tracked to attain the best results. The following are the essential measures a GPS operator is expected to know‚ during positioning. The elevation angle: - is the angle from the antenna between the horizontal and the line of sight to the satellite.
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Recent Trends in Wireless Radio and Satellite Communication Gori Shankar1‚ Rajiv Kumar2 Suresh Gyan Vihar University‚ M.Tech (VLSI) 1 ‚Jaipur Engg. College‚ B.Tech (ECE) 2 gssharma1951@gmail.com‚rajivresnick@gmail.com Abstract- In this paper we discussed satellite and radio communication links. Satellites have evolutionized communication. Satellite and radio communication has served mankind
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Satellite imagery The first images from space were taken on the sub-orbital V-2 rocket flight launched by the U.S. on October 24‚ 1946. Satellite imagery consists of images of Earth or other planets collected by artificial satellites. History[edit] The satellite images were made from pixels. The first crude image taken by the satellite Explorer 6 shows a sunlit area of the Central Pacific Ocean and its cloud cover. The photo was taken when the satellite was about 17‚000 mi (27‚000
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How Many Satellites Are Orbiting the Earth? Satellites are tracked by United States Space Surveillance Network (SSN)‚ which has been tracking every object in orbit over 10 cm (3.937 inches) in diameter since it was founded in 1957. There are approximately 3‚000 satellites operating in Earth orbit‚ according to the US National Aeronautics and Space Administration (NASA)‚ out of roughly 8‚000 man-made objects in total. In its entire history‚ the SSN has tracked more than 24‚500 space objects orbiting
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I-Current Situation: A. Current performance International Satellite Images (ISI) is one of the three United States companies approved by the government to build and launch an imagery satellite system. ISI is building a satellite to image the world at a resolution of one meter. The resolution allows a trained photo interpreter to identify images that include both military objects and non-military objects. The whole operation is financed by investors or venture capitalist‚ which relied on contracts
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The Future of Satellite Internet: For many people throughout the world‚ the only way to get online is by using satellite internet service. This is because they live in regions where traditional cable or DSL lines are not there. This may be because of landscape or the fact that some homes and businesses are simply located too far into rural regions and it is not cost effect for traditional companies to run lines to only one or two clients. However‚ a satellite internet connection does not rely
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ELECTROMECHANICAL SYSTEM TOPIC: NANO -SATELLITE introduction: What is a satellite? Satellite is a celestial body orbiting around larger body like planet or star. It can be artificial or natural. A natural satellite‚ is a celestial body that orbits another body‚ e.g. a planet‚ which is called its primary. There are 164 known natural satellites orbiting planets in the Solar System‚ as well as at least eight orbiting
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Chapter #1-What is Satellite Radio? People all around the world have their favorite radio stations that are preset into car radios‚ flipping between them driving to and from work‚ on errands and around town. The only problem is‚ when traveling too far away from the source station‚ the signal breaks up and fades into static. Most radio signals can only travel about 30 or 40 miles from their source‚ in big market areas. Looking around Canada‚ there are many areas where terrestrial radio is just not
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Iridium and the Market for Satellite Phones Introduction: In August 1988 Motorola CEO Bob Galvin approved initial funding for a global satellite telephone system developed by Motorola’s Space and Technology Group. Two years later‚ in June 1990‚ Motorola formally announced the Iridium project in simultaneous press conferences in New York‚ London‚ Melbourne‚ and Beijing. Motorola was the lead investor in a separate corporate entity that managed the entire Iridium project. It took $5 billion in
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Comparison and Contrast Essay Cable Verses Satellite Introduction: There are more households today which have televisions and computers than at any time in history. Nowadays in order to watch a good movie on television‚ you have to have something other then local channels. Years ago you could catch a good movie at night on the television. Now the way things are‚ you can’t just get away with local channels. You need to have a cable or satellite service. Before you go out and pay for a
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