Abstract

The textbook provides a definition of communication, discusses the types and types of telecommunications, and the requirements for communication. It describes telecommunication signals, their parameters, and methods for converting, encoding, and transmitting various types of messages. The principles of construction of multi-channel transmission systems, their main characteristics, the device of terminal subscriber terminals, operational dispatch communication systems, manual and automatic telephone exchanges are described. The principles of building radio communication facilities and rules for conducting radio exchange are considered. The technical characteristics of radio stations used in the EMERCOM and SBS of Russia are given. The basics of radio-relay, satellite, cellular and trunking communications are described. Meets the requirements of the Federal state educational standard of higher education of the latest generation in the discipline "Automated control systems and communications". It is intended for students of secondary professional educational institutions studying in the specialties 20.02.02 "protection in emergency situations" and 20.02.04 "Fire safety".

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