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Theoretical Framework and Techniques for Laser Detection Utilizing Coherence


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Theoretical Framework and Techniques for Laser Detection Utilizing Coherence
  • 书号:9787030809100
    作者:胡以华
  • 外文书名:
  • 装帧:平脊精装
    开本:B5
  • 页数:194
    字数:
    语种:en
  • 出版社:科学出版社
    出版时间:2025-05-01
  • 所属分类:
  • 定价: ¥159.00元
    售价: ¥125.61元
  • 图书介质:
    纸质书

  • 购买数量: 件  可供
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本书为作者团队在相干激光探测领域多年研究的原创成果,共分为五章,系统介绍了激光相干探测技术在运动目标大气扰动探测、测距测速、微多普勒效应探测、合成孔径探测应用中涉及的相关理论和方法。第一章为激光相干探测理论基础,主要介绍激光相干探测基础知识、激光相干探测特点、相干性影响分析、应用现状及典型系统。第二章为运动目标大气扰动的激光相干探测,从运动目标产生的大气CO2扰动和风场扰动激光相干探测两个方面,按照探测原理、探测系统、实验验证的思路进行介绍。第三章为激光相干测距测速,主要介绍啁啾调幅激光相干雷达测距和线性调频激光相干雷达测距测速。第四章为微多普勒效应的激光相干探测,介绍了微多普勒效应激光相干探测建模,以及基于时频分析的微动特征快速提取和基于信号模型的微动参数估计方法。测原理、信号设计、成像算法、相位补偿算法,以及合成孔径激光雷达实验系统及实验验证结果。
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目录

  • Contents
    Preface Foreword
    CHAPTER 1
    Theoretical Basis of Laser Coherent Detection 1
    1.1 Overview of Laser Detection 1
    1.2 Principles of Laser Coherent Detection 2
    1.2.1 Square-Law Characteristic of Photoelectric Detectors 3
    1.2.2 Characterization of Laser Coherent Detection Signals 3
    1.3 Signal-to-Noise Ratio of Laser Coherent Detection 5
    1.3.1 Noise of Photoelectric Detectors 5
    1.3.2 Signal-to-Noise Ratio of Coherent Detection 7
    1.4 Coherence Efficiency of Laser Coherent Detection 9
    1.4.1 Signal and LO Optical Fields 9
    1.4.2 Coherence Efficiency Analysis 11
    1.5 Basic Characteristics of Laser Coherent Detection 11
    1.6 Overview of Typical Applications of Laser Coherent Detection 13
    1.6.1 Laser Detection of Atmospheric Disturbances 13
    1.6.2 Laser Ranging and Velocity Measurement 17
    1.6.3 Laser Detection Based on the Micro-Doppler Effect 20
    1.6.4 High-Resolution Synthetic Aperture Laser Imaging 23
    References 27
    CHAPTER 2
    Laser Coherent Detection of Atmospheric Disturbances 29
    2.1 Fundamental Principles 29
    2.1.1 Radar Equation for Laser Detection of Atmosphere 29
    2.1.2 Fundamental Principles of Laser Coherent Atmospheric BCO2 Detection 32
    2.1.3 Fundamental Principles of Laser Coherent Detection of Wind-Field Disturbances 39
    2.2 Experimental System for Laser Coherent Detection of Atmospheric Disturbances 42
    2.2.1 Overall Structure of the Detection System 42
    2.2.2 Parameter Design of the Detection System 46
    2.2.3 Pulse Data Processing of Detection Echoes 57
    2.3 Laser Coherent Detection Experiments of Atmospheric Disturbances 62
    2.3.1 Atmospheric CO2 Detection Experiments 62
    2.3.2 Atmospheric Wind-Field Detection Experiments 68
    References 74
    CHAPTER 3
    Chirped AM Laser Coherent Detection of Range and Velocity 77
    3.1 Fundamental Principles 77
    3.1.1 Principle of Chirped AM Ranging 79
    3.1.2 Principle of Chirped AM Velocity Measurement 79
    3.2 Characteristics of Chirp Signals and De-Chirping 80
    3.2.1 Chirp Signals and Their Ambiguity Function 80
    3.2.2 Pulse Compression by a Matched Filter 83
    3.2.3 Frequency-Domain Pulse Compression of Chirp Signals 84
    3.2.4 Range-Velocity Coupling 86
    3.3 Balanced Coherent Detection 87
    3.4 Chirped AM Laser Coherent Detection Experiment of Range and Velocity 88
    3.4.1 Chirped AM Laser Heterodyne Coherent Detection Experiments of Range 89
    3.4.2 Chirped AM Laser Homodyne Coherent Detection Experiments of Range and Velocity 95
    References 102
    CHAPTER 4
    Laser Coherent Detection Based on the Micro-Doppler Effect 103
    4.1 Fundamental Principles of the Micro-Doppler Effect for Laser Detection 103
    4.1.1 Doppler and Micro-Doppler Effects 103
    4.1.2 Modeling of Echoed Photocurrent Signals in Target Vibration Detection 105
    4.1.3 Modeling of Echoed Photocurrent Signals of Targets with Multiple Scattering Points 108
    4.1.4 Influencing Factors of Characteristics of Laser Micro-Doppler Signals 112
    4.2 Target Micro-Doppler Signal Acquisition and Experimental System for Laser Coherent Detection 119
    4.3 Target Micro-Motion Feature Extraction Based on TFA 121
    4.3.1 TFA of Micro-Doppler Signals of Targets 121
    4.3.2 Decomposition of Time-Frequency Features
    of Multi-Component Signals Based on Curve Tracking 125
    4.3.3 Separation and Extraction of Time-Frequency Features
    of Micro-Motions Based on Empirical Mode Decomposition 128
    4.4 Micro-Motion Parameter Estimation Based on Signal Models 132
    4.4.1 Micro-Motion Parameter Estimation Using PF Based on SPM 132
    4.4.2 Micro-Motion Parameter Estimation Based on ML 136
    References 152
    CHAPTER 5
    Laser Coherent Detection Using Synthetic Aperture Technology 155
    5.1 Fundamental Principles of SALs 155
    5.1.1 Intuitive Concept of Synthetic Aperture in Lidars 155
    5.1.2 Echo Signal Model of SALs 157
    5.1.3 Fundamental Principles of Coherent Mixing of Chirp Signals 160
    5.2 SAL Imaging Algorithms 162
    5.2.1 R-D Imaging Algorithm 162
    5.2.2 Phase Gradient Autofocus Algorithm 170
    5.3 Laser Coherent Detection Experiments Using Synthetic Aperture Technology 173
    5.3.1 Structure of the Experimental System 173
    5.3.2 Data Processing Flow 177
    5.3.3 Analysis of Experimental Results 178
    References 194
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