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picture1_History Ppt 77179 | Satellite 01


picture2_History Ppt 77179 | Satellite 01 picture3_History Ppt 77179 | Satellite 01

 139x       Filetype PPTX       File size 0.29 MB       Source: engineering.uodiyala.edu.iq


File: History Ppt 77179 | Satellite 01
Lecture # 1 Chapter One PRINCIPLE OF SATELLITE COMMUNICATION 1. History of satellite communications The first artificial satellite was placed in orbit by the Russians in 1957. That satellite, called ...

icon picture PPTX Filetype Power Point PPTX | Posted on 03 Sep 2022 | 2 years ago
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...Lecture chapter one principle of satellite communication history communications the first artificial was placed in orbit by russians that called sputnik signaled beginning an era united states who behind made all out effort to catch up and launched score with primary purpose regular service used navy military technology at a low level until time high quality voice transmissions were conducted between two earth stations for past fifty years has frequency hf as principal method sending messages fundamental system uses satellites relay radio terminals types you will study are active passive only reflects received signals back acts repeater it amplifies then retransmits them this increases signal strength receiving terminal higher than would be available from typical operational link involves or more station transmits on converts down is next picked figure shows handling several combinations links simultaneously via microwave permits users appropriate deliver exchange information various f...
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