Naval ISR fusion principles, operations, and technologies / Ian Graham.

Format:

Book

Author/Creator:

Graham, Ian, author.

Series:

Artech House mobile communications library

Language:

English

Subjects (All):

Radio--Transmitters and transmission.

Radio.

Radio resource management (Wireless communications).

Physical Description:

1 online resource (xv, 286 pages) : illustrations, charts.

Edition:

First edition.

Place of Publication:

Norwood, MA : Artech House, [2024]

Summary:

"This book explores Radio Access Networks (RANs) within LMR systems, comprising base stations, mobile radios, and hand portable radios. These components facilitate communication among end users via a network of fixed base stations, antennas, and combining systems strategically placed across radio repeater sites throughout the coverage area. This resource also delves into the consequences of interference, highlighting the painstaking efforts required to diagnose and rectify interference issues through field testing and redesign. The central focus being on the design intricacies of base station antennas and combining systems at densely populated shared radio repeater sites. The book underscores how to identify potential sources of interference from co-located transmitters and receivers, effectively surveying sites to anticipate high-level interfering signals. This critical information forms the foundation for crafting base station antenna and combining systems that curtail interference, subsequently optimizing coverage and minimizing costs. Throughout its pages, the book lays out a detailed roadmap for designing LMR systems resilient to interference. By outlining essential principles and methodologies, the book guides practitioners in creating LMR networks that flawlessly align with end users' communication requirements. The resulting systems not only meet expectations but surpass them, offering the coverage area and communication quality demanded by public safety and utility organizations during critical operations. Ultimately, the book serves as an indispensable resource for engineers, designers, and professionals engaged in crafting LMR systems capable of delivering impeccable performance and reliability."--Publisher website.

Contents:

Designing RF Combining Systems for Shared Radio Sites

Contents

Preface

Introduction

1 Repeater Site RF Systems Overview

1.1 Single-Channel Duplexed System

1.2 Multichannel System

2 Surveying the Sites

2.1 Site Survey

2.2 Tower Mapping

2.3 RF Surveys

2.3.1 Spectrum Monitoring

2.3.2 Noise Monitoring

2.4 Tower Structural Survey

3 Essential Background

3.1 Noise in RF Systems

3.1.1 The Behavior of Noise in RF Systems

3.1.2 Noise Figure

3.2 IM

3.2.1 Third-Order IM and Third-Order Intercept Point

3.2.2 Third-Order IM with Unequal Input Signals

3.2.3 Third-Order IM with Three Input Signals

3.2.4 Fifth-Order IM and Fifth-Order IP

3.2.5 Fifth-Order IM with Unequal Input Signals

3.2.6 Fifth-Order IM with Three Input Signals

4 Sources of Interference at Shared Radio Sites

4.1 Transmitter Harmonics

4.2 Transmitter Sideband Noise

4.3 Transmitter IM

4.4 Receiver Blocking

4.5 Receiver IM

4.6 Minimizing Site Interference by Antenna Placement and Frequency Planning

5 Antennas and Site Antenna Systems

5.1 The Isotropic Radiator

5.2 Antenna Specifications

5.2.1 Directivity

5.2.2 Gain

5.2.3 Beamwidth

5.2.4 Reciprocity

5.2.5 E-Plane

5.2.6 H-Plane

5.2.7 Azimuth

5.3 Omnidirectional Antennas

5.3.1 Half-Wave Dipole

5.3.2 Half-Wave Folded Dipole

5.3.3 Quarter-Wave Monopole

5.3.4 Dipole Arrays

5.3.5 Binary Dipole Array

5.3.6 Elliptical Dipole Array

5.3.7 Offset Dipole Array

5.3.8 Colinear Antennas

5.3.9 Dual Antennas

5.4 Directional Antennas

5.4.1 Yagi-Uda

5.4.2 Panel Antennas

5.5 Down-Tilt

5.6 Calculating the Isolation Between Antennas on a Radio Tower

5.6.1 Isolation Between Horizontally Separated Antennas

5.6.2 Isolation Between Vertically Separated Antennas.

5.6.3 Isolation Between Slant Separated Antennas

5.7 Antenna System Topology

5.8 Site Antenna System Design Rules

Selected Bibliography

6 Calculating the Interference Threshold

6.1 Calculating the Initial Receiver Sensitivity

6.2 Adding the Effect of Site Noise

6.3 Calculating the 1-dB Interference Threshold

6.4 Accounting for Multiple Interference Mechanisms

6.5 Recalculating the Final Receiver Sensitivity

6.6 Summary

Reference

7 Duplexers

7.1 Types of Duplexers

7.2 Specifying Duplexer Design Requirements

7.2.1 Transmit to Antenna Filter

7.2.2 Antenna to Receiver Filter

7.2.3 Final Duplexer Frequency Response

7.3 Duplexers and Passive IM

8 Transmitter Combining Systems

8.1 Isolators

8.2 Cavity Filters

8.3 Types of Transmitter Combiners

8.3.1 T-Pass Transmitter Combiners

8.3.2 Star Combiners

8.3.3 Hybrid Combiners

8.3.4 Combinations of Different Types

8.4 Specifying Transmitter Combiner Design Requirements

8.5 Differences for Duplexed Multichannel Systems

8.6 Site Transmitter Combiner Design Rules

9 Receiver Multicoupling Systems

9.1 Receiver Sensitivity

9.2 Types of Receiver Multicouplers

9.2.1 Standard Multicoupler

9.2.2 Channelized Multicoupler

9.2.3 Use of Crystal Filters in Channelized Multicouplers

9.3 Use of Tower Top Amplifiers in Receiver Multicouplers

9.4 Correctly Setting the Gain of Receiver Multicoupling Systems

9.5 Calculating Receiver Filter Requirements

9.6 Differences for Duplexed Multichannel Systems

9.7 Site Receiver Multicoupler Design Rules

10 Power and Antenna System Monitors

10.1 Power Monitors

10.2 Antenna System Monitors

References

11 Transmission Line Systems.

11.1 Transmission Line Systems for Multichannel Site RF System Designs

11.2 Transmission Line Systems for Single-Channel Duplexed RF System Designs

11.3 RF Surge Suppression Devices

11.4 Transmission Line Grounding Devices

12 Design Example

12.1 Information Gathering

12.1.1 Site Survey

12.1.2 Tower Mapping

12.1.3 RF Survey

12.2 Antenna System Design

12.3 Calculating the Interference Threshold

12.4 Transmitter Combiner Design

12.5 Receiver Multicoupler Design

12.5.1 Gain Setting

12.5.2 Calculating the Receiver Filter Requirements

12.6 Antenna System Monitor

12.7 Transmission Line System

12.7.1 RF Surge Suppression Devices

12.7.2 Transmission Line Grounding Devices

12.8 The Finished Design

12.9 Concluding Remarks

About the Author

Index.

Notes:

Description based on publisher supplied metadata and other sources.

Description based on print version record.

Includes bibliographical references and index.

ISBN:

9781685690267

1685690262

OCLC:

1419054518