to get information about the topic airships as low cost alternative to communication satellites related topic refer the page link bellow

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An emergency communication system (ECS) is any system (typically, computer-based) that is organized for the primary purpose of supporting one-way and two-way communication of emergency messages between both individuals and groups of individuals. These systems are commonly designed to integrate the cross-communication of messages between a variety of communication technologies, forming a unified communication system intended to optimize communications during emergencies. ....etc

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Prepared by:
D.BINDU PRIYA
T.INDRAJA




ABSTRACT

The demand for high-capacity wireless services is bringing increasing challenges, especially for delivery of the last mile . Terrestrially, the need for line-of-sight propagation paths represents a constraint unless very large numbers of base-station masts are deployed, while satellite systems have capacity limitations. An emerging solution is offered by high-altitude platforms (HAPs) operating in the stratosphere at altitudes of up to 22 km ....etc

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can you please post the circuit diagram for embedded system to detect human beings buried alive during earthquake. ....etc

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Ham Radio is also know as Amateur radio.It is a community of people that use radio transmitters and receivers to communicate with other Amateur radio operators. If you were to ask a dozen different amateurs what ham radio meant to them chances are you would get 12 different answers. Amateur radio operators are often called ham radio operators or simply hams and frequently the public is more familiar with this term than with the legal term Radio Amateur. The source of this nickname is for all practical purposes lost from the beginning.

Com ....etc

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Alternative fuels, known as non-conventional or advanced fuels, are any materials or substances that can be used as fuels, other than conventional fuels like; fossil fuels (petroleum (oil), coal, and natural gas), as well as nuclear materials such as uranium and thorium, as well as artificial radioisotope fuels that are made in nuclear reactors.

Some well-known alternative fuels include biodiesel, bioalcohol (methanol, ethanol, butanol), chemically stored electricity (batteries and fuel cells), hydrogen, non-fossil methane, non-fossil natura ....etc

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Accident statistics buzzer during any accident
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to get information about the topic alternative communication system during disasterRELATED TOPIC REFER THE LINK BELLOW

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communication facilities for disaster management cbse project
Introduction

Communication facilities for disaster Management
Introduction
Disaster Management: the range of activities designed to mitigate theeffects of disasters and emergency situations and to provide aframework for helping people at-risk to avoid or recover from theimpact of the disaster.Unfortunately at the time of major natural disasters, the regulartelecommunication infrastructure of public wired and wirelesstelephones get severely damaged and become nonfunctional. Duringthi ....etc

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ALTERNATIVE COMMUNICATION SYSTEMS DURING DISASTERS

PSTN or the public switched telephone network is the prime network responsible for transmitting and receiving voice, fax and data. All government and private offices, police stations, fire stations, hospitals and majority of homes and business places are serviced by the PSTN line.

. Amateur Radio operation does not use ground based infrastructure. Moreover these have limited power needs which can easily be met by batteries and generations. Therefore, it has been experienced that Amateur R ....etc

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