This book presents the maintenance of radio equipment and the principles of operation of various radio receiving devices in civil aviation. The main feature of this book is the fact that it covers almost all types of radio receivers currently used in radar, communication and navigation equipment of civil aviation. Special attention is paid to ensuring the sensitivity of the receiver, as well as noise suppression under various conditions. A detailed description of the set of methods for receiving signals, especially in the case of frequency telegraphy is presented. This book provides a detailed description of specific methods of signal processing with frequency modulationthe so-called threshold-lowering reception methods based on reducing the bandwidth to the detector part of the private reception path in combination with the principle of negative feedback. The material presented in this book follows a logical sequence with a large amount of illustrations.  

Sergey Viktorovich Dvornikov is a Doctor of Technical Sciences, Professor, Honored Inventor of the Russian Federation, Professor of the Department Radio Engineering and Optoelectronic Complexes of the St. Petersburg State University of Aerospace Instrumentation. He is the Author of more than 100 patents for inventions of the Russian Federation. Full Member of the International Academy of Authors of Scientific Discoveries and Inventions. His research interests are in the areas of advanced radio communication facilities and complexes.

Alexander Fedotovich Kryachko is Honorary Worker of Higher Professional Education, Professor, Doctor of Technical Sciences, Head of the Department of Radio Engineering and Optoelectronic Complexes at St. Petersburg State University of Aerospace Instrumentation, academician of the International Academy of Communications. . Author of about 140 scientific papers, including 3 monographs, and 7textbooks. His research interests are in the areas of diffraction of electromagnetic waves on complex bodies, the study of the scattering of electromagnetic waves on radar reflectors and aircraft with anti-radar coatings. 

Igor Anatolyevich Velmisov is Professor, Doctor of Technical Sciences, Professor of the Department of Radio Engineering and Optoelectronic Complexes, Institute of Radio Engineering, Electronics and Communications, St. Petersburg State University of Aerospace Instrumentation. Author of 120 scientific papers, including 1 monograph, 11 textbooks, 1 patent. His research interests are in the areas of flight safety issues in air traffic control and radio engineering support for civil aviation aircraft flights.

Dmitry Alexandrovich Zatuchny is Doctor of technical sciences, Associate Professor, and Professor at the Department of Computation Machines, Complexes, Systems and Networks at Moscow StateTechnical University of Civil Aviation. He is the Author of more than 140 scientific works, including 5 monographs, 6 textbooks, 1 patent on an invention, and 6 state-registered computer programs. He was responsible for a number of research projects on ensuring the functioning of modern navigation systems in civil aviation aircraft and air traffic control.

Introduction.- Chapter 1. Principles of building general reception paths.- Chapter 2. Radio receivers of amplitude-modulated signals.- Chapter 3. Private paths for receiving signals with frequency modulation.- Chapter 4. Private paths for receiving signals of frequency and double (two-channel) frequency telegraphy.- Chapter 5. Private paths for receiving signals of phase and relative phase telegraphy.- Chapter 6. Private paths for receiving signals of amplitude telegraphy.- Chapter 7. Digital radio receivers. Reception of complex signals.