SATELLITE COMMUNICATIONS SATELLITE COMMUNICATIONS - AN OVERVIEW INTRODUCTION The outer space has always fascinated people on the earth and communication through space evolved as an offshoot of ideas for space travel. The earliest idea of using artificial satellites for communications is found in a science fiction Brick Moon by Edward Evert Hale‚ published in 1869-70. While the early fictional accounts of satellite and space communications bear little resemblance to the technology as it exists
Premium Satellite Communications satellite
Satellite communication‚ in telecommunications‚ is the use of artificial satellites to provide communication links between various points on Earth. Satellite communications play a vital role in the global telecommunications system. Approximately 2‚000 artificial satellites orbiting Earth relay analog and digital signals carrying voice‚ video‚ and data to and from one or many locations worldwide. Satellite communication has two main components: the ground segment‚ which consists of fixed or mobile
Premium Satellite Communications satellite
Satellite Communication Engineering Michael O. Kolawole Jolade Pty. Ltd. Melbourne‚ Australia Marcel Dekker‚ Inc. TM New York • Basel Copyright © 2002 by Marcel Dekker‚ Inc. All Rights Reserved. ISBN: 0-8247-0777-X This book is printed on acid-free paper. Headquarters Marcel Dekker‚ Inc. 270 Madison Avenue‚ New York‚ NY 10016 tel: 212-696-9000; fax: 212-685-4540 Eastern Hemisphere Distribution Marcel Dekker AG Hutgasse 4‚ Postfach 812‚ CH-4001 Basel‚ Switzerland tel: 41-61-261-8482; fax: 41-61-261-8896
Premium Communications satellite Satellite Cryptography
1 SATELLITE COMMUNICATION – AN INTRODUCTION Contents 1.1 Introduction 1.2 Basics 1.3 Applications of Satellites o Weather Forecasting o Radio and TV Broadcast o Military o Navigation o Global Telephone o Connecting Remote Areas o Global Mobile Communication 1.4 Frequency Allocation of Satellites 1.5 Types of Orbits o GEO o LEO o MEO o Sun Synchronous Orbit o Hohmann Transfer Orbit o Prograde Orbit o Retrograde Orbit o Polar Orbits 1.6 Examples o INTELSAT o U.S. Domsats o Polar Orbiting Satellites
Premium Satellite
History of Satellite Communications The first idea of satellite communication came from an article in 1945 named Wireless World‚ where Author C. Clarke described the use of manned satellites in 24 hour orbits to distribute television programs. However‚ the first person to carefully evaluate the technical and financial aspects of such a venture was John R. Pierce of Bell Telephone Laboratories (Whalen‚ n.d.). In a 1954 speech and 1955 article‚ Pierce described the usefulness of a communications
Premium Satellite Communications satellite
In 1945 Arthur C. Clarke wrote an article entitled "The Future of World Communications" for the magazine Wireless World. This article‚ which the editors renamed "Extra-Terrestrial Relays"‚ was published in the October issue. In it Clarke described the properties of the geostationary orbit‚ a circular orbit in the equatorial plane of the earth such that a satellite appears to hover over a fixed point on the equator. The period of revolution is equal to the period of rotation of the earth
Premium Modulation Satellite Error detection and correction
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 in many
Premium Satellite Radio Communications satellite
Jarvis Communication Corporation Background Jarvis Communication is a start-up firm that develops‚ manufactures‚ and markets a miniature telephone. Last year’s sales revenue was $6.5 million‚ resulting in its first profitable year in its first three years of business. The phone is unique because it is only two inches long‚ weighs two ounces‚ and a miniature receiver is worn in the ear. The phone speaker and microphone carry out all the normal functions of a phone (except dialing) without the use
Premium Printed circuit board
partial fulfillment of the requirements for the six months training Undertaken at “DEFENCE RESEARCH &DEVELOPMENT ORGANISATION” (Snow And Avalanche Study Establishment) Ministry Of Defence‚Govt.of India PRESENTED BY: SOURAB SALOTRA ECE-7TH SEMESTER Univ.roll no - 6810407662 Department of Electronics and Electrical communication Indo Global College Of Engineering‚Abhipur Mohali ACKNOWLEDGEMENT When emotions are profound‚ words sometimes are not sufficient to express our thanks
Premium
ACCESS CONTROL PERFORMANCE IN SATELLITE COMMUNICATION ABSTRACT MAC protocols are designed to coordinate the transmission of packets‚ retransmission of damaged packets‚ and resolution of collisions among stations during a contention period . The MAC protocols include fixed assignment protocol‚ demand assignment protocol‚ random access protocol‚ reservation protocol‚ hybrid of reservation protocol and random access protocols and adaptive protocols. Satellite communication systems have traditionally
Premium Ethernet