Essay on Impact of Satellite Communication Text

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The total number of mobile subscriptions has been announced to reach 6 billion in the market, of which 4 billion are individual users. The rest of the people on earth are potential subscribers that mainly live in rural areas lacking mobile connectivity today. Competing is a well established work model among swedisharchitects as well as in the international architect work force.through this study we set out to get better acquainted with thiswork model in theory and in practice, and to hopefully gainknowledge that will be of use to us and to others working in thefield of architecture.

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ϻ� suitability of green electricity generation from biogas in small and medium scale in sri lanka introduction bio gas! it is a familiar name for us. As we all know it is a conventional way of producing energy from a combustible gas from the anaerobic biomass digesting process. Most of them produce the thermal energy requirement of the country as well as less amount. Below is an essay on satellite communication from anti essays, your source for research papers, essays, and term paper examples. Mail id: [email protected] the transfer of information from source to destination i.e transmitter to receiver is called the communication. Basically communication is possible in two ways they are wire communication and the other one is wireless communication. In this paper we are first giving a brief satellite history and next why we are using satellite for communication and the orbital model.

And after we are giving few advantages, disadvantages and applications of satellite communication. In 1945 arthur c clarke suggested that artificial satellites could be employed for communications. Since then thousands of satellites have been built and are now used for numerous applications including surveillance, mobile communications, navigation, broadcasting, point to point communications, disaster monitoring, space science, exploration of other planets and earth observation. The world's first manmade artificial satellite into low earth orbit was the launch of sputnik 1, by the ussr soviet union , on october 4, 1957. The satellite systems and communication field budgets are an important tool for designing radio frequency links, because of the significance, it must have the attention of the engineers who are involved in design and operate the radio frequency links. Learning about link budget is important, the modern approaches of designing has turned towards the use of computers to do all the calculations which are required for the design, in order to save time and effort and to achieve the accuracy in calculations that all means good accuracy leads to good design.

Satmaster is a package developed by arrowe technical services used to find out satellite link budget and all the parameters that are related to satellite radio links. Three experiments will be designed to help the students learn about the link budget by using satmaster pro package software. The role of satellite networks in global communications is growing at an unprecedented pace. From direct broadcast satellite dbs television, to satellite phones, to credit card transactions, to the internet, corporations and consumers are embracing these new services and placing demands on bandwidth. With this demand have come expectations in terms of basic service costs, hardware costs, and ease of use.

These expectations have forced the industry to examine its traditional ways of operating in order to make satellite services as accessible and convenient as its terrestrial competitors. Recent current events, such as the world trade center tragedy and its aftermath, have demonstrated our need for and how reliant we have become on communication medium. As the world trade center lay in ruins, also destroyed were a vast array of communication equipment from transmission antennae for radio and tv stations to switching equipment for phone service. Though throughout all this people were still able to communicate, tv and radio stations were still transmitting their signal. With this paper i plan to explain the ever growing world of satellite communication.

How it is changing the way we perform our daily tasks and how it has effected our lives in general. How different businesses have adapted to and the ways they have begun to utilize these new technologies. Furthermore, we will take a look at what new theories and technologies are on the horizon.

When and who is trying to implement them, and to what cost, monetarily and professionally. Satellite communication at a glance from the late 1950s with the launches of sputnik and explorer i, satellites have become a growing part of our world. From various types of platforms many different applications are run through these satellites. Since the first commercial model launched into orbit in 1965, the communications satellite has become the linchpin of global communications. From modest beginnings the first satellite could only handle 240 voice transmissions at a time the technology has blossomed to the extent that satellites now carry about one third of the voice traffic between countries and essentially all the television signals between countries. The backbone of this system is the geosynchronous orbit satellite geo , these are large communication satellites placed in orbit roughly 36,0 kilometers above the same spot on the earth at all times. Because of this high orbit each satellite is able to see about one quarter of the earth, so only four or so are needed for global coverage.

Drawbacks to these satellites are that due to the high altitude it takes a quarter of a second for signals to travel to and from the satellite, delaying the responses during a conversation. Also the higher altitude means a weaker signal so larger antennas are needed to maintain overall coverage. The next layers of satellites are middle earth orbit meo and low earth orbit leo.

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Meo satellites are generally placed in orbits above 10,0 kilometers, while leo satellites are generally below 1,500 kilometers. Of course now with the lower altitude the signals are stronger so antenna size can be reduced, but with this also comes less coverage so more satellites are required. In the case of the leo satellites at least 50 are usually required for full global coverage. The reasoning behind the orbit spacing comes from the presence of the van allen radiation belt. Originally discovered by explorer i, the van allen belt is composed of energetic ionized particles, which could damage solar cells and perhaps other solid state components. The belt spans altitudes roughly between 1,500 and 10,0 kilometers, thus the spacing. Vsat, very small aperture terminal typically refers to a class of earth stations with a small diameter in the range of 0.95 meters to 2.4 meters.

The majority of traditional vsat users such as gas stations, convenience stores and banks selected the technology primarily to manage transaction based applications point of sales credit authorization and inventory control. You can see the impact of satellite and wireless communications in everyday life as you take a walk down the street. Make stands at only 35% nationwide, compared to european penetration levels of 65%. Thus we are still only scratching the surface for the potential growth in this field.

The internet has brought many resources to within the fingertips of the population, such as research, publishing, government services, education, entertainment, shopping, and financial services including investments and banking. E mail was the introductory item that helped users become more familiar with this new medium. As of 20 e mail has become a regular or routine part of everyday activity for 80% of all u.s. Though as more people start using these technologies and the types of data and files they transmit change, including graphic material and streaming video, the more strain is being put on the carrying capacity. With this information providers of these services now face the dilemma of how to increase their capacity.

The answer seems to be through satellite, as in 1998 alone commercial satellite operations included 1,700 payload launches. Though satellites have had a tremendous effect on how we communicate with one another, one other aspect that they bring to the table is a quality of life issue. Many health and emergency response teams, including the american red cross have adopted satellite technology within their means of communication in times of trouble, especially in remote areas.

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