本書系統地論述了現代雷達的構成、功能、信號和數據處理及應用，內容包括雷達的基本原理、功能、系統組成和性能指標，雷達天線，雷達發射機，雷達接收機，雷達顯示和回波，雷達測量，雷達檢測距離，雷達目標檢測和跟蹤，相干雷達信號處理，電子戰術語與概念，雷達新技術和新體制等。全書內容全面，論述簡明，由淺入深，注重基本原理與實際應用的聯系。本書可作為信息與通信工程專業或雷達專業高年級本科生的課外輔導用書，也可作為雷達外訓任務的教材，還可作為科技工作者和工程技術人員的參考書籍。
陳小龍，何友院士信息融合團隊海上目標探測方向核心成員，近年來，結合雷達共性技術和重大軍事應用需求，針對雷達海上目標探測中的關鍵問題，從海雜波和目標特性認知、目標SCR改善與高分辨特征提取、多維特征聯合處理等方面進行了深入研究，取得了系列創新成果。主持國家自然科學基金面上項目、民航聯合基金、青年基金、國防科技基金等項目10項。
Contents
Chapter 1 An Introduction to Radar 1
1.1 Fundamental Elements of Radar 2
1.1.1 The Radar Concept 2
1.1.2 Types of Radar 5
1.1.3 Radar Medium 9
1.2 A Brief History of the Evolution of Radar 9
1.2.1 Early Experiments 9
1.2.2 First Military Radars 10
1.3 Functions Performed by Radar 12
1.3.1 Overall System Considerations 12
1.3.2 Basic Radar Functions 14
1.4 Radar Frequency 16
1.4.1 Radar Frequency Division 16
1.4.2 Influence of Frequency on Radar Performance 19
1.5 Some Definitions and Other Details 22
1.5.1 Types of Radar Targets 22
1.5.2 Target Fluctuation Models 23
1.5.3 Noise, Signal-to-Noise Ratio, and Detection 24
Chapter 2 Radar Antenna 27
2.1 Distribution of Radiated Energy in Angle 29
2.2 Types of Radar Antennas 34
2.2.1 Yagi Antennas 34
2.2.2 Reflector Antennas 36
2.2.3 Phased Array Antennas 40
2.3 Characteristics of the Radiation Pattern 45
2.4 Phase Scanning 51
Summary 55
Chapter 3 Radar Transmitter 57
3.1 Requirements for Transmitters 57
3.2 Summary of Radar RF Power Sources 58
3.2.1 Oscillator 61
3.2.2 Tube Amplifiers 63
3.2.3 Solid-State RF Power Sources 66
3.3 Two Basic Transmitter Configurations 68
3.3.1 Self-excited Oscillator 68
3.3.2 Power Oscillator 68
3.3.3 The Pulse Modulator 70
3.4 Pulsed Waveform 72
3.5 Coherent Radar 83
3.5.1 Concept of Coherence 83
3.5.2 Fully Coherent Radar 84
3.5.3 Solid-State Amplifier 87
Summary 88
Chapter 4 Radar Receiver 90
4.1 Summary of Receiver Types 91
4.1.1 Crystal Video Receiver 92
4.1.2 Homodyne Receivers 93
4.1.3 Superheterodyne Receivers 94
4.2 Major Receiver Functions 99
4.2.1 Receiver Protection 99
4.2.2 RF Preselection 100
4.2.3 Frequency Downconversion and Mixers 101
4.2.4 Selection of LO and IF Frequencies 102
4.3 Electrical Background Noise 103
4.4 Receiver Dynamic Range 108
4.4.1 Sensitivity Time Control (STC) 110
4.4.2 Gain Control 111
Summary 112
Chapter 5 Radar Display and Returns 113
5.1 Radar Displays 114
5.2 Radar Clutter 118
5.2.1 Introduction to Radar Clutter 118
5.2.2 General Dependencies of Surface Clutter 121
5.2.3 Sea Clutter 122
Chapter 6 Radar Measurements 127
6.1 Range Measurements 128
6.1.1 Pulse Ranging Method 128
6.1.2 Minimum Range 128
6.1.3 Maximum Range 129
6.1.4 Range Resolution 130
6.1.5 Pulse Compression 132
6.2 Direction Measurements 136
6.2.1 Lobing Angle Measurement 137
6.2.2 Monopulse Angle Measurement 138
6.3 Velocity Measurements 143
6.3.1 Doppler Effect 143
6.3.2 Doppler Shift 144
6.3.3 Unambiguous Doppler Shift Measurement 147
Summary 148
Chapter 7 The Radar Detection Range 150
7.1 What Determines Detection Range 151
7.2 Radar Range Equation 154
7.2.1 Power Density at a Distance R 154
7.2.2 Received Power from a Target 155
7.2.3 Signal-to-Noise Ratio and the Radar Range Equation 157
7.2.4 Summary of Losses 158
7.2.5 Solving For Other Variables 159
7.2.6 Decibel Form of the Radar Range Equation 159
7.2.7 Radar Line of Sight (RLOS) 161
7.2.8 Radar Reflections from Flat Ground 162
7.2.9 The Radar Equation in Practice 163
7.3 What the Range Equation Tells Us 165
7.4 Surface Clutter Radar Equation 169
Summary 171
Chapter 8 Fundamental of Radar Detection and Tracking 173
8.1 Detection Process 173
8.2 Integration and Its Leverage on Detection Range 177
8.2.1 Integration Experiment 177
8.2.2 Multiple-Pulse Effects on Radar Equation 181
8.3 Parameters of Radar Detection 183
8.3.1 Detection Probability 183
8.3.2 False-Alarm Rate 184
8.3.3 Detection Threshold 185
8.3.4 Signal-to-Noise Ratio 187
8.4 Constant False Alarm Rate Detector 189
8.4.1 Basic CFAR Architecture 190
8.4.2 Cell Averaging CFAR 192
8.5 Tracking with Radar 195
8.5.1 Types of Tracking 195
8.5.2 Radar Range Tracking 197
8.6 Radar Signal Management 201
Summary 203
Chapter 9 Coherent Radar Signal Processing 204
9.1 Pulsed Radar Doppler Data Acquisition and Characteristics 206
9.2 Moving Target Indication (MTI) 208
9.2.1 Basic Principle 208
9.2.2 Pulse Cancellers 210
9.2.3 Blind Speeds 212
9.2.4 Merits and Limitations 213
9.3 Pulse-Doppler Processing 215
9.3.1 Basic Principle 215
9.3.2 Doppler Filter Bank 217
9.3.3 Metrics for Pulse-Doppler Detection of Moving Targets 219
9.3.4 The Moving Target Detector (MTD) 221
Summary 225
Chapter 10 Electronic Warfare Terms and Concepts 226
10.1 EW Definition 226
10.2 EW Subfields 226
10.3 Electronic Warfare Support 227
10.4 Electronic Attack 233
10.5 Electronic Protection 240
Summary 242
Chapter 11 New Technology and System of Radar 243
11.1 Low Probability of Intercept (LPI) Radar 243
11.2 Multifunction Rotating Electronically Scanned Radars 245
11.3 Ultra Wide-Band (UWB) Radar 246
11.4 Noise Radar Technology 247
11.5 Multi-Input Multi-Output (MIMO) Radar 248
11.6 Synthetic Aperture Radar (SAR) 249
11.7 Air-Defense Radars 251
11.8 Ground Penetrating Radar (GPR) 252
Reference 256
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