Advanced High-Frequency Radio Communications / Edition 1

by Johnson, Stephen Cook

Overview

High frequency (HF) radio is a consistent and critical communications technology for government, civilian, and military institutions throughout the world. Fortified by recent technological advancements, it is rapidly presenting itself as a practical alternative to many satellite systems — providing comparable service that is less expensive and more readily available.

This up-to-date, comprehensive reference and planner's guide presents an in-depth description of automated HF communications, considers the many phenomena that affect HF radio, and offers penetrating insight into new and future HF engineering techniques, including:

• New information on automatic link establishment (ALE) technology
• Advanced variable-transmission rate modems
• Wideband (1 MHz) HF communications services
• Automated HF networks as an extension of the Internet

Helpful chapter-end examples, 100 illustrations, and 135 equations make this an invaluable guide for communications engineers involved with the manufacture of HF radio and ancillary equipment. The authors draw upon years of experience to offer new approaches for establishing and maintaining an automated HF network, based on industry and governmental standards. In addition, it serves as an excellent tutorial for graduate students and systems-level planners.

Product Details

ISBN-13:	9780890068151
Publisher:	Artech House, Incorporated
Publication date:	02/28/1997
Series:	Communications Engineering Series
Pages:	404
Product dimensions:	6.00(w) x 9.00(h) x 1.06(d)

Table of Contents

Contents:
High-Frequency Communication System Engineering: Wireless. High-Frequency Radio in the Global Information Infrastructure. High-Frequency Systems Engineering. High-Frequency Systems engineering. High-Frequency System Design.

High-Frequency Sky-Wave Channels: Sky-Wave Propagation in a Benign Ionosphere. Sky-Wave Propagation in a Disturbed Ionosphere. Noise. Radio Interference.

High-Frequency Antennas: Narrowband Antennas. Broadband Antennas. "Small" High-Frequency Antennas. Environmental Effects.

Digital Modems for High-Frequency Radio: Traditional Design Approaches. Relative Merits of Contemporary Designs. Enhanced High-Frequency Modem Design.

Automatic Link Establishment Signal Structure: Linking Performance. ALE Word Format. Coding. Word Synchronization. Addresses. ALE Frame Structure.

Automatic Link Establishment Protocols: Overview of ALE Operations. Channel Evaluation and Selection. Link Establishment. ALE Data Structures. ALE Orderwire Functions. Future Developments.

Linking Protection: Linking Protection Technique. Protection Interval Analysis. Performance Evaluation of Linking Protection.

The High-Frequency Data Link Protocol: Data Transfer Protocol. Message Management Protocol. Link Management Protocol. Timeouts. Broadcast Mode. ARQ Circuit Mode. Full-Duplex Operation. Adapting Data Rate.

High-Frequency Radio Networking: Automated Networking Technologies. An Example Implementation. Automated High-Frequency Network Management.

Editorial Reviews

A textbook developed for the Armed Forces Communications Electronics Association course, providing general information on high-frequency radio and the US military and federal standards for automated systems. For both veterans and notices in the field discusses system engineering, sky-wave channels, antennas, digital modems, automatic link establishment signal structure and protocols, linking protection, the data link protocol, and radio networking. Annotation c. by Book News, Inc., Portland, Or.

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