DOCSLIB.ORG

Introduction to Communication Electronic Warfare Systems for a Listing of Recent Titles in the Artech House Information Warfare Library, Turn to the Back of This Book

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Introduction to Communication Electronic Warfare Systems for a Listing of Recent Titles in the Artech House Information Warfare Library, Turn to the Back of This Book Introduction to Communication Electronic Warfare Systems For a listing of recent titles in the Artech House Information Warfare Library, turn to the back of this book. Introduction to Communication Electronic Warfare Systems Richard Poisel Artech House Boston London www.artechhouse.com Library of Congress Cataloging-in-Publication Data Poisel, Richard. Introduction to communication electronic warfare systems / Richard Poisel. p. cm. (Artech House information warfare library) Includes bibliographical references and index. ISBN 1-58053-344-2 (alk. paper) 1. Military telecommunications. 2. Information warfare. 3. Computer networksSecurity measures. 4. Electronics in military engineering. I. Title. II. Series. UG590 .P65 2002 355.343dc21 2001056572 British Library Cataloguing in Publication Data Poisel, Richard Introduction to communication electronic warfare systems. (Artech House information warfare library) 1. Electronics in military engineering 2. Communications, Military I. Title 623.73 ISBN 1-58053-344-2 Cover design by Igor Valdman © 2002 ARTECH HOUSE, INC. 685 Canton Street Norwood, MA 02062 All rights reserved. Printed and bound in the United States of America. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, in- cluding photocopying, recording, or by any information storage and retrieval system, with- out permission in writing from the publisher. All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Artech House cannot attest to the accuracy of this informa- tion. Use of a term in this book should not be regarded as affecting the validity of any trade- mark or service mark. International Standard Book Number: 1-58053-344-2 Library of Congress Catalog Card Number: 2001056572 10987654321 Contents Preface xiii Acknowledgments xv Chapter 1 Communication Electronic Warfare Systems 1 1.1 Introduction 1 1.2 Information Warfare 1 1.3 Electronic Warfare 3 1.3.1 Electronic Support 3 1.3.2 Electronic Attack 4 1.3.3 Electronic Protect 4 1.4 Electronic Support 5 1.4.1 Low Probability of Detection/Interception/Exploitation 7 1.4.2 Future Communication Environments 8 1.4.3 Wired Communications 9 1.4.4 ES Summary 9 1.5 Electronic Attack 10 1.5.1 EA Summary 11 1.6 Typical EW System Configuration 11 1.6.1 System Control 11 1.6.2 Antennas 12 1.6.3 Signal Distribution 13 1.6.4 Search Receiver 13 1.6.5 Set-On Receiver 13 1.6.6 Signal Processing 14 1.6.7 Direction-Finding Signal Processing 14 1.6.8 Exciter 14 1.6.9 Power Amplifier 15 1.6.10 Filters 15 1.6.11 Communications 15 1.7 Concluding Remarks 16 References 16 Chapter 2 Electromagnetic Signal Propagation 19 2.1 Introduction 19 2.2 Signal Propagation 19 2.3 RF Band Designations 20 v vi Introduction to Communication Electronic Warfare Systems 2.4 Polarization 22 2.5 Power Density 22 2.6 Free-Space Propagation 24 2.7 Direct Wave 27 2.8 Wave Diffraction 33 2.9 Reflected Waves 35 2.10 Surface Wave 40 2.11 Ducting 41 2.12 Meteor Burst 41 2.13 Scattering 42 2.14 Characteristics of the Mobile VHF Channel 43 2.15 Propagation Via the Ionosphere 46 2.15.1 Ionospheric Layers 46 2.15.2 Refraction 48 2.15.3 Near-Vertical Incidence Sky Wave 50 2.15.4 HF Fading 50 2.15.5 Maximum Usable Frequency and Lowest Usable Frequency 51 2.15.6 Automatic Link Establishment 52 2.16 Concluding Remarks 52 References 53 Chapter 3 Noise and Interference 55 3.1 Introduction 55 3.2 Thermal Noise 56 3.3 Internal Noise Sources 56 3.4 External Noise Sources 57 3.5 Cochannel and Multipath Interference 59 3.6 Concluding Remarks 60 References 60 Chapter 4 Radio Communication Technologies 61 4.1 Introduction 61 4.2 Modulation 63 4.2.1 Amplitude Modulation 65 4.2.2 Angle Modulation 67 4.2.3 Orthogonal Signaling 71 4.2.4 Access Methods 73 4.2.5 Duplexing 77 4.2.6 Digital Signaling 78 4.2.7 Spread Spectrum 97 Contents vii 4.3 Coding of Communication Signals 110 4.3.1 Source Coding for Data Compression 110 4.3.2 Channel Coding for Error Control 115 4.4 Modems 134 4.5 Facsimile 140 4.6 Communication Security 140 4.6.1 Data Encryption 141 4.6.2 Public Key Encryption 141 4.6.3 Digital Signatures 142 4.6.4 Data Encryption Standard 144 4.6.5 Pretty Good Privacy 145 4.6.6 Fortezza Encryption System 146 4.6.7 Escrow Encryption System 147 4.6.8 Over-the-Air Rekeying 148 4.7 Concluding Remarks 148 References 149 Chapter 5 System Engineering 151 5.1 Introduction 151 5.2 System Engineering 151 5.2.1 Performance Characteristics 155 5.2.2 Environmental Characteristics 155 5.2.3 Reliability and Availability 160 5.2.4 Human-Factors Engineering 171 5.2.5 System Cost 174 5.3 Concluding Remarks 175 References 176 Chapter 6 Electronic Support 177 6.1 Introduction 177 6.2 Intercept 177 6.2.1 Internals Versus Externals 178 6.2.2 Propagation Loss 178 6.3 Geolocation 179 6.4 Triangulation with Multiple Bearings 180 6.5 Deployment Considerations 184 6.6 Electronic Mapping 185 6.7 Common Operational Picture 185 6.8 Operational Integration with Other Disciplines 186 6.9 Support to Targeting 187 6.10 Concluding Remarks 187 References 187 viii Introduction to Communication Electronic Warfare Systems Chapter 7 Electronic Attack 189 7.1 Introduction 189 7.2 Communication Jamming 189 7.3 Jammer Deployment 193 7.4 Look-Through 194 7.5 Analog Communications 195 7.6 Digital Communications 196 7.7 Narrowband/Partial-Band Jamming 197 7.8 Barrage Jamming 198 7.9 Jamming LPI Targets 201 7.10 Follower Jammer 202 7.11 Concluding Remarks 203 References 203 Chapter 8 Antennas 207 8.1 Introduction 207 8.2 Isotropic Antenna 209 8.3 Antenna Gain 210 8.4 Wire Antennas 211 8.4.1 Dipole 212 8.4.2 Monopole 214 8.4.3 Loop 215 8.4.4 Biconical/Discone 215 8.4.5 Yagi 216 8.4.6 Log Periodic 216 8.4.7 Helix Antennas 218 8.4.8 Spiral Antennas 220 8.5 Active Antennas 220 8.6 Aperture Antennas 222 8.6.1 Parabolic Dish 222 8.6.2 Antenna Arrays 223 8.7 Genetically Designed Antennas 225 8.8 More on Antenna Gain 226 8.9 Concluding Remarks 228 References 228 Chapter 9 Receivers 231 9.1 Introduction 231 9.2 Receivers 232 9.2.1 RF Amplification and Filtering 234 9.2.2 Sensitivity 236 Contents ix 9.2.3 Dynamic Range 237 9.2.4 Mixing/Frequency Conversion 240 9.2.5 Intermediate Frequency Filtering and Amplification 241 9.2.6 Detection/Demodulation 242 9.3 Types of Receivers 246 9.3.1 Narrowband Receivers 246 9.3.2 Wideband Receivers 250 9.4 Concluding Remarks 263 References 264 Chapter 10 Signal Processing 265 10.1 Introduction 265 10.2 Orthogonal Functions 266 10.3 Transforms 267 10.3.1 Trigonometric Transforms 268 10.3.2 Haar Transform 274 10.3.3 Wavelet Transforms 276 10.3.4 Fast Transforms 285 10.4 Cyclostationary Signal Processing 286 10.5 Higher-Order Statistics 289 10.6 Applications 291 10.6.1 Signal Detection 291 10.6.2 Signal Classification 302 10.6.3 Recognition/Identification 317 10.8 Concluding Remarks 328 References 329 Chapter 11 Direction-Finding Position-Fixing Techniques 331 11.1 Introduction 331 11.2 Bearing Estimation 331 11.2.1 Circular Antenna Array 332 11.2.2 Interferometry 333 11.2.3 Monopulse Direction Finder 347 11.2.4 Amplitude Direction Finding 352 11.2.5 Doppler Direction Finder 359 11.2.6 Array-Processing Bearing Estimation 362 11.2.7 Line-of-Bearing Optimization 375 11.3 Position-Fixing Algorithms 379 11.3.1 Eliminating Wild Bearings 380 11.3.2 Stansfield Fix Algorithm 381 11.3.3 Mean-Squared Distance Algorithm 384 x Introduction to Communication Electronic Warfare Systems 11.3.4 Combining Error Contours 388 11.4 Single-Site Location Techniques 391 11.5 Fix Accuracy 392 11.6 Fix Coverage 396 11.7 Concluding Remarks 399 References 401 Chapter 12 Hyperbolic Position-Fixing Techniques 403 12.1 Introduction 403 12.2 Time Difference of Arrival 403 12.3 Differential Doppler 410 12.4 Cross Ambiguity Function Processing 414 12.4.1 Position Fix Accuracy 416 12.5 Time of Arrival 418 12.6 Concluding Remarks 422 References 422 Chapter 13 Exciters and Power Amplifiers 425 13.1 Introduction 425 13.2 Exciters 425 13.2.1 Oscillators 426 13.2.2 Synthesizer 428 13.2.3 Modulator 429 13.3 Power Amplifiers 431 13.3.1 Amplifier Operating Characteristics 431 13.3.2 Efficiency 433 13.3.3 Push-Pull Architecture 434 13.3.4 Classes of Amplifiers 435 13.3.5 Switching Architectures 438 13.3.6 Amplifier Linearization 444 13.3.7 Basic Power Modules 445 13.3.8 Combiners 448 13.3.9 Output Filters 449 13.3.10 Noise-Power Ratio 450 13.4 Concluding Remarks 451 References 451 Chapter 14 Early-Entry Organic Electronic Support 453 14.1 Introduction 453 14.2 Target Model 454 14.3 Intercept System Model 455 Contents xi 14.4 Simulation Results 459 14.4.1 Performance Versus the Number of Target Nets 460 14.4.2 Search Bandwidth 462 14.4.3 Noise Factor 464 14.4.4 Postprocessing Time 466 14.4.5 Mission Duration 467 14.5 Concluding Remarks 469 References 471 Chapter 15 Detection and Geolocation of Frequency-Hopping Communication Emitters 473 15.1 Introduction 473 15.2 Analysis 473 15.3 Simulation 476 15.3.1 ES System Operation 478 15.3.2 Results and Analysis 481 15.3.3 Discussion 484 15.4 Concluding Remarks 486 References 486 Chapter 16 Signal Detection Range 487 16.1 Introduction 487 16.2 Noise Limits on Detection Range 490 16.3 Targets 491 16.4 Detection Range with the Reflection Propagation Model 491 16.4.1 Airborne Configurations of ES Systems 492 16.4.2 Ground-Based Detection Ranges 497 16.4.3 Discussion 499 16.5 Concluding Remarks 501 References 503 Chapter 17 Electronic Attack: UAV and Ground-Based 505 17.1 Introduction 505 17.2 Signal Propagation at Long Ranges 506 17.3 Jamming
Load more

Recommended publications
  • Battle Management Language: History, Employment and NATO Technical Activities
    Battle Management Language: History, Employment and NATO Technical Activities Mr. Kevin Galvin Quintec Mountbatten House, Basing View, Basingstoke Hampshire, RG21 4HJ UNITED KINGDOM [email protected] ABSTRACT This paper is one of a coordinated set prepared for a NATO Modelling and Simulation Group Lecture Series in Command and Control – Simulation Interoperability (C2SIM). This paper provides an introduction to the concept and historical use and employment of Battle Management Language as they have developed, and the technical activities that were started to achieve interoperability between digitised command and control and simulation systems. 1.0 INTRODUCTION This paper provides a background to the historical employment and implementation of Battle Management Languages (BML) and the challenges that face the military forces today as they deploy digitised C2 systems and have increasingly used simulation tools to both stimulate the training of commanders and their staffs at all echelons of command. The specific areas covered within this section include the following: • The current problem space. • Historical background to the development and employment of Battle Management Languages (BML) as technology evolved to communicate within military organisations. • The challenges that NATO and nations face in C2SIM interoperation. • Strategy and Policy Statements on interoperability between C2 and simulation systems. • NATO technical activities that have been instigated to examine C2Sim interoperation. 2.0 CURRENT PROBLEM SPACE “Linking sensors, decision makers and weapon systems so that information can be translated into synchronised and overwhelming military effect at optimum tempo” (Lt Gen Sir Robert Fulton, Deputy Chief of Defence Staff, 29th May 2002) Although General Fulton made that statement in 2002 at a time when the concept of network enabled operations was being formulated by the UK and within other nations, the requirement remains extant.
    [Show full text]
  • “Canned History”: American Newsreels and The
    “Canned History”: American Newsreels and the Commodification of Reality, 1927-1945 By Joseph E.J. Clark B.A., University of British Columbia, 1999 M.A., University of British Columbia, 2001 M.A., Brown University, 2004 A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Department of American Civilization at Brown University Providence, Rhode Island May, 2011 © Copyright 2010, by Joseph E.J. Clark This dissertation by Joseph E.J. Clark is accepted in its present form by the Department of American Civilization as satisfying the dissertation requirement for the degree of Doctor of Philosophy. Date:____________ _________________________________ Professor Susan Smulyan, Co-director Date:____________ _________________________________ Professor Philip Rosen, Co-director Recommended to the Graduate Council Date:____________ _________________________________ Professor Lynne Joyrich, Reader Approved by the Graduate Council Date:____________ _________________________________ Dean Peter Weber, Dean of the Graduate School iii Curriculum Vitae Joseph E.J. Clark Date of Birth: July 30, 1975 Place of Birth: Beverley, United Kingdom Education: Ph.D. American Civilization, Brown University, 2011 Master of Arts, American Civilization, Brown University, 2004 Master of Arts, History, University of British Columbia, 2001 Bachelor of Arts, University of British Columbia, 1999 Teaching Experience: Sessional Instructor, Department of Gender, Sexuality, and Women’s Studies, Simon Fraser University, Spring 2010 Sessional Instructor, Department of History, Simon Fraser University, Fall 2008 Sessional Instructor, Department of Theatre, Film, and Creative Writing, University of British Columbia, Spring 2008 Teaching Fellow, Department of American Civilization, Brown University, 2006 Teaching Assistant, Brown University, 2003-2004 Publications: “Double Vision: World War II, Racial Uplift, and the All-American Newsreel’s Pedagogical Address,” in Charles Acland and Haidee Wasson, eds.
    [Show full text]
  • THE SEARCH for COMPACT BINARY COALESCENCE in ASSOCIATION with SHORT GRBS with LIGO/VIRGO S5/VSR1 DATA by Nickolas V Fotopoulos
    THE SEARCH FOR COMPACT BINARY COALESCENCE IN ASSOCIATION WITH SHORT GRBS WITH LIGO/VIRGO S5/VSR1 DATA By Nickolas V Fotopoulos ATHESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN PHYSICS at The University of Wisconsin–Milwaukee May 2010 THE SEARCH FOR COMPACT BINARY COALESCENCE IN ASSOCIATION WITH SHORT GRBS WITH LIGO/VIRGO S5/VSR1 DATA By Nickolas V Fotopoulos ATHESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN PHYSICS at The University of Wisconsin–Milwaukee May 2010 Jolien Creighton Date Graduate School Approval Date ii THE SEARCH FOR COMPACT BINARY COALESCENCE IN ASSOCIATION WITH SHORT GRBS WITH LIGO/VIRGO S5/VSR1 DATA By Nickolas V Fotopoulos The University of Wisconsin–Milwaukee, 2010 Under the Supervision of Professor Jolien Creighton ABSTRACT During LIGO’s fifth science run (S5) and Virgo’s first science run (VSR1), x-ray and gamma-ray observatories recorded 33 short, hard gamma-ray bursts (short GRBs), 22 of which had high quality data in two or more detectors. The most convincing explanation for the majority of short GRBs is that in the final stages of an inspiral between a neutron star and a companion compact object, the neutron star is tidally disrupted, providing material to accrete, heat, and eject on sub-second timescales. I describe a search for the gravitational-wave signatures of compact binary coalescence in the vicinity of short GRBs that occurred during S5/VSR1. Jolien Creighton Date iii © Copyright 2010 by Nickolas V Fotopoulos iv to Mom and Bub v TABLE OF CONTENTS Acknowledgments ix List of Tables xi List of Figures xiv 1 Introduction 1 2 Short GRBs, CBCs, and gravitational waves 3 2.1 Short gamma-ray burst phenomenology .
    [Show full text]
  • Atp 6-02.45 Techniques for Tactical Signal Support To
    ATP 6-02.45 TECHNIQUES FOR TACTICAL SIGNAL SUPPORT TO THEATER OPERATIONS NOVEMBER 2019 DISTRIBUTION RESTRICTION: Approved for public release, distribution is unlimited. This publication supersedes FMI 6-02.45, dated 5 July 2007. Headquarters, Department of the Army This publication is available at the Army Publishing Directorate site (https://armypubs.army.mil/), and the Central Army Registry site (https://atiam.train.army.mil/catalog/dashboard). *ATP 6-02.45 Army Techniques Publication Headquarters No. 6-02.45 Department of the Army Washington, DC, 07 November 2019 Techniques for Tactical Signal Support to Theater Operations Contents Page PREFACE.................................................................................................................... iii INTRODUCTION .......................................................................................................... v Chapter 1 THE OPERATIONAL ENVIRONMENT .................................................................... 1-1 The Information Environment .................................................................................... 1-1 The Tactical Network ................................................................................................. 1-3 Chapter 2 ECHELONS ABOVE CORPS TACTICAL NETWORK ARCHITECTURE .............. 2-1 Section I –Network Architecture and Transport Capabilities ............................. 2-1 Colorless Core Architecture....................................................................................... 2-1 Network Transport Capabilities
    [Show full text]
  • Section 3: the Search & Call Process in the United Church of Christ
    United Church of Christ SEARCH AND CALL A Pilgrimage through Transitions and New Beginnings SECTION THREE THE SEARCH AND CALL PROCESS in The United Church of Christ “I am confident of this, that the one who began a good work among you will bring it to completion….” Philippians 1:6a SECTION THREE THE SEARCH AND CALL PROCESS in The United Church of Christ I am confident of this, that the one who began a good work among you will bring it to completion…. Philippians 1:6a “A Call, not a Job; a Vocation, not an Occupation” APPROACHING THE TASK: GOD’S COMMITTEE Selecting a Search Committee Just as the local church is not “our” church but rather God’s, so too the Search Committee is really God’s committee. A search for a new pastor is one of the most spiritual ministries in the church. The selection of Search Committee members is a task that is approached with prayer, wisdom, sensitivity, and awareness that God may be calling certain church members to consider serving in this particular capacity.1 One “best practice” for committee selection includes publicizing the criteria for membership on the Search Committee and inviting persons in the congregation Submitting to submit nominations to the governing board. nominations is one of Submitting nominations is one of the many ways that the many ways that the entire congregation can be informed about and included in the search process; it should be made the entire clear, however, that not all nominees will be congregation can be selected. Those who submit nominations should informed about and include a brief description of the reasons why that included in the search person would be an asset to the committee.
    [Show full text]
  • Inter-Island Communications
    SOUTH CHINA SEA MILITARY CAPABILITY SERIES A Survey of Technologies and Capabilities on China’s Military Outposts in the South China Sea INTER-ISLAND COMMUNICATIONS J. Michael Dahm INTER-ISLAND COMMUNICATIONS J. Michael Dahm Copyright © 2020 The Johns Hopkins University Applied Physics Laboratory LLC. All Rights Reserved. This study contains the best opinion of the author based on publicly available, open- source information at time of issue. It does not necessarily represent the assessments or opinions of APL sponsors. The author is responsible for all analysis and annotations of satellite images contained in this report. Satellite images are published under license from Maxar Technologies/DigitalGlobe, Inc., which retains copyrights to the original images. Satellite images in this report may not be reproduced without the express permission of JHU/APL and Maxar Technologies/DigitalGlobe, Inc. See Appendix A for notes on sources and analytic methods. NSAD-R-20-048 July 2020 Inter-Island Communicaitons Contents Introduction .................................................................................................................. 1 Troposcatter Communications, 散射通信 ..................................................................... 2 VHF/UHF and Other Line-of-Sight Communications ...................................................... 6 4G Cellular Communications ........................................................................................ 7 Airborne Communications Layer .................................................................................
    [Show full text]
  • JP 6-0, Joint Communications System, 10 June 2015
    Joint Publication 6-0 T OF EN TH W E I S E' L L M H D T E F T E N A R D R A M P Y E • D • U A N C I I T R E E D M S A T F AT E S O Joint Communications System 10 June 2015 Incorporating Change 1 04 October 2019 PREFACE 1. Scope a. This publication is the keystone document for the communications system series of publications. It provides fundamental principles and guidance to plan, execute, and assess communications system support to joint operations. b. An array of information, underpinned by joint doctrine, is utilized to employ combat power across the range of military operations. The communications system provides the means to synchronize joint forces. c. Reliable, secure, and synchronized information sharing among joint forces, multinational forces, and with non-Department of Defense agencies is essential for effective command and control in today’s network-enabled environment. Information systems and networks provide the means to send, receive, share, and utilize information. The synthesis of advanced communications system capabilities and sound doctrine leads to information superiority, which is essential to success in all military operations. 2. Purpose This publication is the Chairman of the Joint Chiefs of Staff (CJCS) official advice concerning communications in joint operations and provides considerations for military interaction with governmental and nongovernmental agencies, multinational forces, and other interorganizational partners. It does not restrict the authority of the joint force commander (JFC) from organizing forces and executing the mission in a manner deemed most appropriate to ensure unity of effort.
    [Show full text]
  • Wireless Military Communications - NNEC Enabler
    Wireless Military Communications - NNEC Enabler Miroslav Hopjan, Zuzana Vranova University of Defence, Department of Communication and Information Systems, Kounicova 65, 60200 Brno, Czech Republic [email protected]. [email protected] Abstract The paper discusses the NATO Network Enabled Capability concept, mainly from the communication point of view. The changes involve complete new requirements on the role of command and control to increase flexibility and effectiveness. Integration of Modeling and Simulation with Command, Control, and Information Systems increases the number of risks but it promises to leverage the projected capability and interoperability. Keywords: NNEC, simulation, tactical communication, CCIS. 1 Introduction This paper does not introduce new technological solution in wireless communications, the point of view is closer to the customer side of the house - how to use the emerging communication technologies in an optimal way supporting the concept of NATO Network Enabled Capability (NNEC) which emphasizes the role of information superiority in modem warfare. The aim is to evaluate number of aspects when implementing this technology in the Czech Army. What role is adequate for contemporary microwave devices, why the implementation is delayed, what risks must be outweighed by benefits of these solutions. Communications networking is the clearly visible part of the solution, and suitability of selected, mostly wireless communication approach, is discussed. Although it is not the core functionality for Command and Control Information Systems (CCIS) it is apparent that NNEC encompasses also Modeling and Simulation (M&S) capability. These two domains have developed different architectures, standards but further progress of one system is related to the other.
    [Show full text]
  • The People's Liberation Army's 37 Academic Institutions the People's
    The People’s Liberation Army’s 37 Academic Institutions Kenneth Allen • Mingzhi Chen Printed in the United States of America by the China Aerospace Studies Institute ISBN: 9798635621417 To request additional copies, please direct inquiries to Director, China Aerospace Studies Institute, Air University, 55 Lemay Plaza, Montgomery, AL 36112 Design by Heisey-Grove Design All photos licensed under the Creative Commons Attribution-Share Alike 4.0 International license, or under the Fair Use Doctrine under Section 107 of the Copyright Act for nonprofit educational and noncommercial use. All other graphics created by or for China Aerospace Studies Institute E-mail: [email protected] Web: http://www.airuniversity.af.mil/CASI Twitter: https://twitter.com/CASI_Research | @CASI_Research Facebook: https://www.facebook.com/CASI.Research.Org LinkedIn: https://www.linkedin.com/company/11049011 Disclaimer The views expressed in this academic research paper are those of the authors and do not necessarily reflect the official policy or position of the U.S. Government or the Department of Defense. In accordance with Air Force Instruction 51-303, Intellectual Property, Patents, Patent Related Matters, Trademarks and Copyrights; this work is the property of the U.S. Government. Limited Print and Electronic Distribution Rights Reproduction and printing is subject to the Copyright Act of 1976 and applicable treaties of the United States. This document and trademark(s) contained herein are protected by law. This publication is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited. Permission is given to duplicate this document for personal, academic, or governmental use only, as long as it is unaltered and complete however, it is requested that reproductions credit the author and China Aerospace Studies Institute (CASI).
    [Show full text]
  • SDR and Cognitive Radio for Military Applications
    UNCLASSIFIED/UNLIMITED SDR and Cognitive Radio for Military Applications Tricia J. Willink Communications Research Centre 3701 Carling Ave., Box 11490, Station H Ottawa, ON, K2H 8S2 CANADA email:[email protected] ABSTRACT The development of software-defined radios (SDRs) should provide a small, light and cost-efficient platform capable of supporting multiple waveforms over a large frequency range. While there are challenges in achieving the vision of rapidly portable waveforms, the SDR is a critical technology for future military communications, and is an enabling platform for cognitive radio. Cognitive radio is proposed as a technology for exploiting the EM spectrum more effectively. While the main frequency bands of interest are fully licenced to authorised users, they are often unoccupied over large geographic areas or for significant time intervals. Cognitive radios are envisioned as aware, adaptable and intelligent devices, capable of learning and operating autonomously in a wide range of scenarios. The key feature of cognitive radios is the capability to identify unused frequency bands, to jump to them and select appropriate radio parameters. These radios must be able to operate without causing unacceptable interference to authorised users of the frequency band, therefore they must monitor for the presence of the primary user, and take into account the possible location of receivers of its signals. INTRODUCTION The adoption of the network-centric warfare (NCW), or net-enabled operations (NEOps), philosophy by western and allied nations requires a similarly revolutionary approach to communications technology. The basis of NEOps is the sharing of information among front-line forces, decision makers, sensors, weapons, etc.
    [Show full text]
  • The Evolution of Communications in the Military As It Relates to Leadership
    Murray State's Digital Commons Integrated Studies Center for Adult and Regional Education Fall 2017 The volutE ion of Communications in the Military as it Relates to Leadership Palmer Lipscomb [email protected] Follow this and additional works at: https://digitalcommons.murraystate.edu/bis437 Recommended Citation Lipscomb, Palmer, "The vE olution of Communications in the Military as it Relates to Leadership" (2017). Integrated Studies. 90. https://digitalcommons.murraystate.edu/bis437/90 This Thesis is brought to you for free and open access by the Center for Adult and Regional Education at Murray State's Digital Commons. It has been accepted for inclusion in Integrated Studies by an authorized administrator of Murray State's Digital Commons. For more information, please contact [email protected]. Running head: THE EVOLUTION OF COMMUNICATIONS IN THE MILITARY. 1 The Evolution of Communications in the Military as it Relates to Leadership By Palmer Lipscomb Project submitted in partial fulfillment of the Requirements for the Bachelor of Integrated Studies Degree Regional Academic Outreach Murray State University August 30, 2017 Running head: THE EVOLUTION OF COMMUNICATIONS IN THE MILITARY. 2 Historical Project Proposal This project proposal will follow the “Design for a Historical Research Project” found in the BIS 437 Senior Project Guidelines. 1. This historical project will focus primarily on the United States military, but reserves the right to reference militaries of other nations throughout time. 2. The project will span a large amount of time in history. The intent is to show how military communications have evolved over time. To fully show the evolution of communications in the U.S military, this project will span from the inception of the U.S Army, as the oldest branch of the U.S military, in 1775 to present.
    [Show full text]
  • An Undergraduate Course in Military Electronic Applications, Aka Electronic Warfare
    Paper ID #10790 An Undergraduate Course in Military Electronic Applications, aka Electronic Warfare Prof. Gene L. Harding, Purdue University GENE L. HARDING is an associate professor of Electrical and Computer Engineering Technology at Purdue University, where he has taught for eleven years. He has three years of industrial experience with Agilent Technologies and 28 years of combined active and reserve service in the United States Air Force. Page 24.176.1 Page c American Society for Engineering Education, 2014 An Undergraduate Course in Military RF Electronic Applications, aka Electronic Warfare Abstract An applications course can be a fun and interesting way to learn about an engineering discipline. The author created a course with a focus on what the military calls electronic warfare (EW): using the electromagnetic spectrum for advantage, preserving its use for friendly forces, and preventing the enemy from doing the same. During the course, his students explored several generally-applicable topics, including various types of radio frequency (RF) propagation, high- frequency printed circuit board (PCB) layout, and antenna analysis and design. They also studied several more militarily-focused topics, including different types of military systems used in EW, processing issues with EW signals, searching for RF transmissions, and locating hostile emitters. It is an upper-division course with an associated lab, and the author took an intentionally aggressive approach to the labs, pushing the limits of the available test equipment and facilities. As might be expected, this approach resulted in several “failures” during lab experiments, but also succeeded in pinpointing a number of issues to be addressed in future offerings of the course.
    [Show full text]