Electronic communications systems and the frequency domain : an illustrated primer for C3 student

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Authors
Babcock, Bruce Kevin
Subjects
Command and control
C2
C3 systems
communications
frequency spectrum
bandwidth
Fourier analysis
multiplexing
modulation
radio wave propagation
transmission impairments
Advisors
Weir, Maurice D.
Date of Issue
1990-06
Date
June 1990
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
This thesis is a tutorial for Command, Control, and Communications (C3) students and synthesizes the essence of electronic communications systems and related frequency spectrums into an integrated set of illustrations. The objective is to help the C3 student focus his or her attention on the performed operations and transformations in order to acquires a better understanding for the processes involved. The first major illustration show how the various components of a communication system are related. These components include analog and digital signals, multiplexing, modulation, and various transmission mediums. Central to any communications system is the limitations imposed by bandwidth and noise. The concept of bandwidth is developed through Fourier analysis. An integrated set of graphics shows the relationship between the time and frequency domains and illustrates how the bandwidth increases as the pulse width decreases. Transmitting information often requires higher data rates which, in turn, require higher frequencies. Radio wave propagation is frequency dependent and a chart is developed showing the different categories of radio wave propagation as they relate to atmospheric layers and frequency. Finally, a chart relating transmission medium attenuation, noise sources, and various radio wave terminology is given.
Type
Thesis
Description
Series/Report No
Department
Cpmmand, Control and Communications Academic Group
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
vi, 117 p. ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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