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 modulation―the 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.
Author(s): Sergey Viktorovich Dvornikov, Alexander Fedotovich Kryachko, Igor Anatolyevich Velmisov, Dmitry Alexandrovich Zatuchny
Series: Springer Aerospace Technology
Publisher: Springer
Year: 2023
Language: English
Pages: 173
City: Singapore
Introduction
Contents
Abbreviations
1 Influence of Electromagnetic Situation on the Principles of Construction of the Main Reception Tract
1.1 Electromagnetic Interference
1.2 Single Signal Selectivity of a Superheterodine Receiver
1.3 Effects of Interference on Broadband Receiver Cascades
1.3.1 Blocking
1.3.2 Cross Modulation
1.3.3 Intermodulation
1.4 Requirements to the Structure and Elements of the Main Receiving Channel of the Radio Receiver
References
2 Radio Receiving Devices of Amplitude-Modulated Signals
2.1 Brief Description of Signals. Features of Radio Receivers Amplitude-Modulated Signals
2.2 Distortions of Amplitude-Modulated Signals in the Main Reception Tract
2.3 Detecting Two High-Frequency Vibrations with Different Carrier Frequencies
2.4 Synchronous Detector
2.5 Distortion of Amplitude-Modulated Signals During Detection
2.6 Features of Signal Receivers with One Side Strip
References
3 Radio Receivers of Pulse Signals
3.1 Brief Information on Pulse Signals and Features of the Structural Diagrams of Receivers
3.2 Distortion of Pulse Signals in Electoral Amplifiers
3.3 Optimization of the Main Tract of Reception of Pulse Signals
3.4 Features of Automatic Regulation Systems in Receivers of Pulse Signals
References
4 Radio Receivers of Signals with Angle Modulation
4.1 General Information on Reception of Frequency-Modulated Signals
4.2 Distortions of Frequency-Manipulated Signals in the Linear Tract of the Receiver
4.3 Effects of Interference on a Frequency Signal Receiver
4.4 Methods of Increasing the Immunity of Reception of Frequency-Modulated Signals
4.5 Doppler Signal Radio Receivers
4.6 Main Features of the Following Filter
4.7 General Information on Reception of Phasomanipulated Signals
4.8 Distortions of Phasomanipulated Signals in the Linear Tract of the Receiver
4.9 Principles of Obtaining Coherent Reference Vibration in the Presence of a Carrier in the Received Signal
4.10 Nesush Recovery Systems with Coherent Reception of Signals
4.11 Specific Features of Relative Phase Shift Keying Signals with Relative Phase Manipulation
References
5 Range Radio Receiving Devices
5.1 General Information About Range RAN
5.2 Main Qualitative Indicators of Range RPU
5.3 Methods of Adjustment of DRPU and Division of Its Operating Frequency Range into Sub-Bands
5.4 Features of Structural Schemes of DRPU
5.5 Pairing the Settings of the Preselekgor and Heterodyne Circuits
5.6 Range Input Circuits and Amplifiers
References
6 Receivers of Optical Systems
6.1 Characteristic of the Optical Wave Range
6.2 Brief Information on Optical Radiation Receivers
6.3 Structural Diagrams of Receiving Devices of Optical Systems
6.4 Sources of Noise in Optical Systems
6.5 Noise Ratio in Receivers with Fine Photodetection
6.6 Noise Rates in Superheterodyne Optical Receivers
6.7 Spatial Conditions for Effective Frequency Photo-Conversion
6.8 Comparative Evaluation of Optical Receivers with Direct Photodetection and F0T0 Frequency Conversion
References
7 Measurement of Basic Characteristics of Radio Receivers
7.1 General Radio Test Information
7.2 Measuring the Sensitivity of Radio Receivers
7.3 Measurement of Election
7.3.1 Single Signal Selectivity
7.3.2 Two-Signal Selectivity
7.4 Measuring the Distortion of Signals
7.5 Determination of Regulatory Characteristics
7.5.1 Automatic Gain Control
7.5.2 Automatic Frequency Control
7.6 Additional Types of Tests
7.7 Test Automation
References
