跳频通信自适应抗干扰技术 闫云斌等 著 专业科技 文轩网

第1 章 概述························································································································1 1.1 研究背景及意义·······································································································1 1.2 通信信号侦察识别技术研究现状···················································································2 1.2.1 通信信号的调制识别························································································2 1.2.2 扩频信号的检测与参数估计···············································································3 1.3 扩频通信干扰检测与识别技术现状················································································5 1.3.1 直接序列扩频通信干扰检测与识别技术································································5 1.3.2 跳频通信干扰检测与识别技术············································································5 1.4 跳频通信抗跟踪干扰研究现状·····················································································7 1.4.1 常规跳频模式抗跟踪干扰方法············································································8 1.4.2 新型跳频模式抗跟踪干扰方法············································································8 1.5 本书结构与章节安排······························································································.11 参考文献····················································································································.12 第2 章 跳频通信的基本原理及其面临的典型干扰·····································································.21 2.1 跳频通信的基本原理······························································································.21 2.2 跳频通信面临的典型干扰························································································.22 2.2.1 阻塞干扰····································································································.22 2.2.2 跟踪干扰····································································································.25 2.3 本章小结·············································································································.27 参考文献····················································································································.28 第3 章 单天线下跳频通信跟踪干扰检测方法研究·················································································.29 3.1 引言···················································································································.29 3.2 噪声跟踪干扰检测方法···························································································.30 3.2.1 系统模型····································································································.30 3.2.2 AWGN 信道下的性能分析··············································································.32 3.2.3 瑞利衰落信道下的性能分析············································································.34 3.2.4 Nakagami-m 衰落信道下的性能分析··································································.36 3.2.5 数值计算与结果分析·····················································································.38 3.3 音调跟踪干扰检测方法···························································································.43 3.3.1 系统模型····································································································.43 3.3.2 AWGN 信道下的性能分析··············································································.44 3.3.3 瑞利衰落信道下的性能分析············································································.45 3.3.4 Nakagami-m 衰落信道下的性能分析··································································.48 3.3.5 数值计算与结果分析·····················································································.50 3.4 本章小结·············································································································.55 参考文献····················································································································.56 第4 章 基于稀疏分解的跳频通信跟踪干扰检测技术··································································.58 4.1 引言···················································································································.58 4.2 稀疏分解理论基础·································································································.59 4.2.1 稀疏分解基本数学模型··················································································.59 4.2.2 冗余基构造方法···························································································.59 4.2.3 稀疏分解中常见的求解算法············································································.60 4.3 基于推广的正则化FOCUSS 算法的跳频信号重构··························································.61 4.3.1 系统模型····································································································.61 4.3.2 跳频信号稀疏性分析·····················································································.62 4.3.3 算法原理····································································································.63 4.3.4 仿真结果及讨论···························································································.64 4.4 基于稀疏分解的跟踪干扰特征提取及检测····································································.71 4.4.1 跳频信号时延估计························································································.71 4.4.2 跟踪干扰特征提取及检测的具体步骤································································.73 4.4.3 仿真结果及分析···························································································.74 4.5 本章小结·············································································································.78 参考文献····················································································································.78 第5 章 跳频通信阻塞干扰识别技术·······················································································.81 5.1 引言···················································································································.81 5.2 系统模型·············································································································.81 5.2.1 FH-GMSK 通信系统模型················································································.82 5.2.2 阻塞干扰模型······························································································.82 5.3 阻塞干扰识别特征提取···························································································.84 5.3.1 分形盒维数·································································································.84 5.3.2 分数阶傅里叶变换及其快速算法······································································.85 5.3.3 阻塞干扰认知特征提取··················································································.86 5.4 基于分层决策的阻塞干扰识别方案·············································································.92 5.5 仿真结果及讨论····································································································.93 5.6 本章小结·············································································································.96 参考文献····················································································································.96 第6 章 双信道联合跳频抗干扰技术·······················································································.98 6.1 引言···················································································································.98 6.2 双信道联合跳频····································································································.99 6.2.1 系统模型····································································································.99 6.2.2 抗干扰原理·································································································100 6.2.3 双信道联合跳频在AWGN 信道下的误码率························································101 6.2.4 双信道联合跳频在瑞利衰落信道下的误码率·······················································102 6.3 联合跳频实现方式·································································································102 6.3.1 多电台联合工作···························································································102 6.3.2 多通道跳频电台···························································································103 6.4 双信道联合跳频在AWGN 信道下的抗干扰性能····························································103 6.4.1 抗跟踪干扰性能···························································································104 6.4.2 抗部分频带噪声干扰性能···············································································105 6.4.3 抗多音干扰性能···························································································106 6.4.4 数值计算结果及仿真结果···············································································107 6.5 双信道联合跳频在瑞利衰落信道下的抗干扰性能···························································116 6.5.1 抗跟踪干扰性能···························································································117 6.5.2 抗部分频带噪声干扰性能···············································································118 6.5.3 抗多音干扰性能···························································································118 6.5.4 数值计算结果及仿真结果···············································································119 6.6 本章小结·············································································································125 参考文献····················································································································125 第7 章 卷积编码双信道联合跳频抗干扰技术···········································································127 7.1 引言···················································································································127 7.2 系统模型·············································································································128 7.2.1 硬判决接收模型···························································································129 7.2.2 线性软判决接收模型·····················································································129 7.2.3 乘积软判决接收模型·····················································································129 7.3 线性软判决卷积编码双信道联合跳频在AWGN 信道下的抗干扰性能·································130 7.3.1 抗噪声性能·································································································130 7.3.2 抗跟踪干扰性能···························································································133 7.3.3 抗部分频带噪声干扰性能···············································································137 7.3.4 抗多音干扰性能···························································································137 7.3.5 数值计算结果及仿真结果···············································································142 7.4 卷积编码双信道联合跳频在瑞利衰落信道下的抗干扰性能···············································149 7.4.1 抗衰落性能·································································································150 7.4.2 抗跟踪干扰性能···························································································153 7.4.3 抗部分频带噪声干扰性能···············································································158 7.4.4 抗多音干扰性能···························································································158 7.4.5 数值计算结果及仿真结果···············································································163 7.5 本章小结·············································································································170 参考文献····················································································································170 第8 章 卷积编码多信道联合跳频抗干扰技术···········································································173 8.1 引言···················································································································173 8.2 系统模型·············································································································173 8.3 卷积编码多信道联合跳频在AWGN 信道下的抗干扰性能················································175 8.3.1 抗跟踪干扰性能···························································································176 8.3.2 抗部分频带噪声干扰性能···············································································178 8.3.3 抗多音干扰性能···························································································179 8.3.4 数值计算结果及仿真结果···············································································180 8.4 卷积编码多信道联合跳频在瑞利衰落信道下的抗干扰性能···············································184 8.4.1 抗跟踪干扰性能···························································································185 8.4.2 抗部分频带噪声干扰性能···············································································186 8.4.3 抗多音干扰性能···························································································186 8.4.4 数值计算结果及仿真结果···············································································188 8.5 本章小结·············································································································191 参考文献····················································································································192 附录A·······························································································································193