周升辉博士学位论文(2)

哈尔滨工业大学工学博士学位论文 目 录

摘 要 .................................................................................................................................. I Abstract .............................................................................................................................. III 第1章 绪论 ....................................................................................................................... 1 1.1 课题来源及背景 ...................................................................................................... 1 1.2 MIMO雷达国内外研究现状 ................................................................................... 3 1.2.1 MIMO雷达研究现状 ........................................................................................ 4 1.2.2 MIMO高频雷达研究现状 .............................................................................. 10 1.2.3 多载频波形研究现状 ..................................................................................... 13 1.2.4 非连续谱信号研究现状 ................................................................................. 14 1.2.5 多载频空域阵列综合 ..................................................................................... 15 1.2.6 分布式压缩感知系统研究现状 ..................................... 错误！未定义书签。 1.3 MIMO高频雷达存在的技术问题 ......................................................................... 16 1.4 主要研究内容 ........................................................................................................ 17 第2章 多载频MIMO雷达模糊度函数研究 ................................................................... 20 2.1 引言 ........................................................................................................................ 20 2.2 MIMO雷达模糊函数 ............................................................................................. 22 2.2.1 MIMO雷达目标和信道模型 .......................................................................... 24 2.2.2 MIMO模糊函数一般表达式 .......................................................................... 26 2.3 复合MIMO模糊函数 ........................................................................................... 28 2.3.1 基于模型假设互相关函数简化 ..................................................................... 29 2.4 MF集中MIMO模糊度函数 ................................................................................. 31 2.5 非连续谱集中MIMO模糊函数分析 ................................................................... 33 2.5.1 多载频相位编码信号模型 ............................................................................. 33 2.5.2 非连续谱信号模型 ......................................................................................... 34 2.5.3 非连续谱MCPC模糊函数 ............................................................................ 35 2.5.4 非连续谱模糊函数分析 ................................................................................. 37 2.6 分布MIMO模糊函数分析 ................................................................................... 40 2.6.1 分布MIMO模糊函数仿真分析 .................................................................... 42 2.7 本章小结 ................................................................................................................ 44 第3章 集中MIMO非连续谱信号设计处理 ................................................................ 45 3.1 引言 ........................................................................................................................ 45

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目 录 3.2 多载频相位编码(MCPC)信号 .............................................................................. 46 3.2.1 MCPC信号表达式 .......................................................................................... 46 3.2.2 MCPC信号分辨力分析 .................................................................................. 46 3.2.3 MCPC信号速度距离处理 .............................................................................. 48 3.3 基于接收端非连续谱MCPC旁瓣抑制 ............................................................... 50 3.3.1 基于凸优化最小二乘旁瓣抑制 ..................................................................... 50 3.3.2 非连续谱循环P4码旁瓣抑制 ....................................................................... 51 3.3.3 非连续循环P4码远区旁瓣性能 ................................................................... 54 3.3.4 非连续循环P4码运动目标性能 ................................................................... 54 3.3.5 带宽对相参积累周期影响 ............................................................................. 54 3.3.6 非连续谱计算机仿真 ..................................................................................... 55 3.4 非连续谱波形设计 ................................................................................................ 56 3.4.1 非连续谱相关旁瓣与波形功率谱关系 ......................................................... 56 3.4.2 基于量子遗传算法非连续谱波形优化 ......................................................... 58 3.4.3 计算机仿真结果 ............................................................................................. 63 3.5 非连续谱相位编码信号实测数据处理 ................................................................ 65 3.5.1 实测数据处理与分析 ..................................................................................... 65 3.6 本章小结 ................................................................................................................ 67 第4章 集中MIMO多载频非均匀虚拟阵列综合 ........................................................ 68 4.1 引言 ........................................................................................................................ 68 4.2 多载频MIMO雷达模型 ....................................................................................... 69 4.2.1 多载频MIMO雷达模型 ................................................................................ 69 4.2.2 多载频MIMO空域综合原理 ........................................................................ 69 4.2.3 多载频MIMO阵增益 .................................................................................... 71 4.3 非均匀阵列空域重构 ............................................................................................ 72 4.3.1 非均匀阵列空域数据重构 ............................................................................. 73 4.3.2 不同频信噪比空域分析 ................................................................................. 75 4.3.3 不同频率速度信息统一处理 ......................................................................... 76 4.3.4 目标不同频率响应对空域综合影响 ............................................................. 77 4.4 实验与结果分析 .................................................................................................... 79 4.4.1 频率选择及性能分析 ..................................................................................... 79 4.5 本章小结 ................................................................................................................ 81 第5章 基于压缩感知MF-D MIMO雷达信号处理 ..................................................... 82

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哈尔滨工业大学工学博士学位论文 5.1 引言 ........................................................................................................................ 82 5.2 压缩感知信号恢复原理 ........................................................................................ 83 5.3 MF-D MIMO雷达压缩感知信号处理 .................................................................. 84 5.3.1 MF-D MIMO雷达信号模型 ........................................................................... 85 5.3.2 MF-D MIMO模型CS感知矩阵构造 ............................................................ 86 5.3.3 MF-D MIMO模型CS感知算法流程 ............................................................ 88 5.4 CS算法实验结果及相关因素分析 ....................................................................... 90 5.4.1 二维匹配滤波处理 ......................................................................................... 90 5.4.2 压缩感知信号处理 ......................................................................................... 91 5.4.3 定位精度分析 ................................................................................................. 92 5.4.4 系统空间分辨力分析 ..................................................................................... 93 5.4.5 多载频与单频压缩矩阵分析 ......................................................................... 96 5.4.6 目标RCS对分布式系统影响 ........................................................................ 96 5.5 本章小结 ................................................................................................................ 99 结 论 ............................................................................................................................. 100 参考文献 ......................................................................................................................... 102 攻读博士学位期间所发表的论文及其它成果 ............................................................. 112 哈尔滨工业大学学位论文原创性声明及使用授权说明 ............................................. 113 致 谢 ............................................................................................................................. 114 个人简历 ......................................................................................................................... 115

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目 录 Contents

Abstract (In Chinese) ...................................................................................................... I Abstract (In English) ..................................................................................................... III Chapter 1 Introduction ................................................................................................... 1 1.1 Source and background of the subject .................................................................... 1 1.2 Multi-frequency MIMO HF radar and its research status at home and abroad ...... 3 1.2.1 MIMO radar research status ............................................................................. 4 1.2.2 MIMO HF radar research status ....................................................................... 8 1.2.3 Multipule carrier frequency waveform research status .................................. 10 1.2.4 Discontinous spectrum waveform research status.......................................... 12 1.2.5 Mltiplule carrier frequency spatial array sytheszie ........................................ 12 1.2.6 Distritution CS radar research status .............................................................. 12 1.3 Problem in MIMO HF radar technique ................................................................ 16 1.4 Main research contents .......................................................................................... 18 Chapter 2 Multiple carrier frequency MIMO radar ambiguity research ................ 20 2.1 Triditional waveform ambiguity ............................................................................ 20 2.2 Colocated MIMO waveform ambiguity function ................................................. 21

2.3 Distibution MIMO radar ambiguity function ........................................................ 23

2.3.1 Distibution MIMO target and channel model ................................................. 24 2.3.2 Receive signal parameter model .................................................................... 24 2.3.3 Distibution MIMO radar ambiguity general expression ................................ 24 2.4 Composite MIMO ambiguity fuction ................................................................... 25 2.4.1 Based model hypothesis cross-correlation simplification .............................. 26 2.4.2 Autocorrelation function and transmit beam ................................................. 27 2.5 Colocated discontinuous spectrum MIMO ambiguity function analysis .............. 32 2.5.1 Multiple carrier phased coded signal model ................................................... 32 2.5.2 Discontinuous spectrum signal model ........................................................... 33 2.5.3 Discontinuous spectrum MCPC ambiguity .................................................... 33 2.5.2 Discontinuous spectrum ambiguity function analysis.................................... 33 2.6 Distibution multiple carrier frequency MIMO ambiguity function analysis ........ 32 2.6.1 Distibution MIMO ambiguity function simulation analysis ......................... 33 2.6 Summary ................................................................................................................ 34 Chapter 3 Discontinuous spectrum MCPC signal design and sidelobe suppression processing ....................................................................................................................... 35 3.1 Introduction ........................................................................................................... 35 3.2 MCPC signal ......................................................................................................... 36

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哈尔滨工业大学工学博士学位论文 3.2.1 MCPC signal structure ................................................................................... 36 3.2.2 MCPC signal resolution analysis ................................................................... 36 3.2.2 MCPC signal velocity and range processing .................................................. 36 3.3 Based on reciever discontinuous spectrum MCPC sidelobe supression ............... 38 3.3.1 Based on CVX LS sidelobe supression .......................................................... 38 3.3.2 Discontinuous spectrum cycle P4 sidelobe supression .................................. 40 3.3.3 Discontinuous spectrum cycle P4 far sidelobe performance.......................... 40 3.3.4 Discontinuous spectrum cycle P4 velocity target performace ....................... 40 3.3.5 Bandwith influence on the accumulation period ............................................ 40 3.3.6 Discontinuous spectrum computer simulation ............................................... 40 3.4 Discontinuous spectrum waveform design............................................................ 42 3.4.1 Discontinuous spectrum auto the proposed algorithm ................................... 42 3.4.2 Motivation of KDDA for extracting location features ................................... 43 3.4.3 Selection of location feature dimensions........................................................ 45 3.4.4 Selection of kernel functions .......................................................................... 46 3.5 Discontinuous spectrum MCPC signal experiment data processing ..................... 49 3.5.1 Practical data processing and analysis............................................................ 50 3.6 Summary ................................................................................................................ 59 Chapter 4 Mutiple carrier frequency inhomogeneous virtual array synthesize ...... 60 4.1 Introduction ........................................................................................................... 60 4.2 Mutiple carrier frequency MIMO radar model ..................................................... 61 4.2.1 Mutiple carrier frequency MIMO radar model .............................................. 61 4.2.2 Mutiple carrier frequency MIMO spatial synthesize principle ...................... 62 4.2.3 Mutiple carrier frequency MIMO gain .......................................................... 63

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4.3 Inhomogeneous array spatial reconfiguration ....................................................... 65 4.3.1 Inhomogeneous array spatial reconfiguration principle ................................. 65 4.3.2 Different SNR spatial analysis ....................................................................... 66 4.3.3 Different frequency velocity information unify processing ........................... 67 4.3.4 Different frequency response affacts spatial synthesize ................................. 67 4.4 Experiment and result analysis .............................................................................. 68 4.5.2 Frequency choice and performace analysis .................................................... 70 4.5 Summary ................................................................................................................ 77 Chapter 5 Multiple carrier frequency disitribution MIMO HF radar signal processing ....................................................................................................................... 79 5.1 Introduction ........................................................................................................... 79 5.2 Compressive sampling signal recover principle ................................................... 80

5.3 MF-D MIMO radar CS signal processing ............................................................. 81

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