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本书为满足“信号与系统”课程教学需求而编写，旨在通过实践训练与习题解析强化学生对课程内容的理解与应用。全书分为实验指导篇与习题解答篇两大部分：实验指导篇依托 MATLAB 软件，系统设计了基础实验、综合实验及仿真实验；习题解答篇对应教材各章节习题，提供详细解析与思路指导。本书注重理论与实践相结合，适合学生自学与课堂辅助，助力提升学生的工程实践与创新能力。本书可作为高等院校通信工程、电子信息工程、信息工程等专业的“信号与系统”课程的教学参考书。

目 录
实验指导篇
第 1 章 基础实验部分·····································································································2 
实验 1 常用信号的观察 ································································································2 
实验 2 基本运算单元 ···································································································3 
实验 3 零输入、零状态及完全响应··················································································8 
实验 4 系统的时域特性分析 ·······················································································.11 
实验 5 线性系统的稳定性分析 ····················································································.16 
实验 6 线性系统的频率特性测试 ·················································································.18 
实验 7 周期信号的分解与合成 ····················································································.23 
实验 8 信号的无失真传输 ··························································································.38 
实验 9 无源与有源滤波器 ··························································································.40 
实验 10 全通滤波器··································································································.43 
第 2 章 综合自主实验部分···························································································.46 
实验 11 系统的频域特性分析······················································································.46 
实验 12 切比雪夫低通滤波器······················································································.53 
实验 13 开关电容滤波器····························································································.56 
实验 14 信号的采样与恢复·························································································.61 
实验 15 反馈系统的自激振荡······················································································.63 
实验 16 二阶网络函数的模拟······················································································.65 
实验 17 系统极点变化对系统性能的影响 ·······································································.67 
实验 18 系统的能控性与能观性分析·············································································.71 
实验 19 二阶定常系统的相轨迹···················································································.73 
实验 20 AM 调制与解调实验 ······················································································.76 
第 3 章 仿真实验部分··································································································.80 
实验 21 无失真传输系统····························································································.80 
实验 22 模拟滤波器的设计·························································································.82 
实验 23 信号的产生及时间变量的变换 ··········································································.85 
实验 24 系统的时域特性分析······················································································.88 
实验 25 连续 LTI 系统的频域分析················································································.93 
实验 26 系统的频域特性分析······················································································.96 
实验 27 信号的调制与解调·························································································100 
实验 28 连续系统的状态方程的求解·············································································105 
实验 29 相位对信号合成的影响···················································································110 
实验 30 信号的自相关、互相关和功率谱研究 ·································································114 
实验 31 周期信号的分解与合成···················································································117 
实验 32 采样定理·····································································································124 
实验 33 语音信号的采样及频谱分析 ·············································································129 
实验 34 FDM 通信系统设计························································································132 
习题解答篇
第 4 章 信号及系统的基本概念····················································································139 
第 5 章 系统的时域分析······························································································171 
第 6 章 傅里叶变换及连续系统的频域分析 ··································································218
第 7 章 拉普拉斯变换及连续系统的 s 域分析·······························································259 
第 8 章 z 变换及离散系统的 z 域分析··········································································289 
第 9 章 系统函数·········································································································327 
参考文献·······················································································································340

前 言 
“信号与系统”是一门理论性和技术性都比较强的技术基础学科，它把反映事物本质的物理概念、数学概念和工程概念结合起来，以数学和物理学为基础，同时又与电路分析基础、电子学、数字信号处理、网络理论、计算方法、自动控制等相互渗透、相互交合和相互反馈，这些特点决定了课程教学中习题训练和实践教学的重要性。
为配合“信号与系统”的课程教学，给学生提供更大的自由发挥空间，以培养创新能力，结合当前院校教育体制改革和课程标准要求，针对课后实验指导与习题解答内容，特组织和编写了本书，可与邵英主编的《信号与系统基本理论》配套使用。希望本书能够提高“信号与系统”课程的教学效果，提高学生的实践能力，增强创新思维，建立实验教学和理论课程紧密衔接、工程应用和研究能力相互补充、综合素质逐层深化的实践教学模式。
本书在内容上根据教材特点和实验要求进行编排，主要包括实验指导篇和习题解答篇两部分。实验指导篇围绕信号分析和系统特性两个核心，突出了 MATLAB 软件在仿真计算和虚拟仪器方面的优势特性，总体上划分为基础性实验和综合及自主性实验两部分。基础性实验帮助学生熟悉 MATLAB 的开发环境和基本操作，熟悉基本信号分析和系统分析的MATLAB 实现；综合及自主性实验使学生了解和熟悉较为复杂的系统分析与实现。习题解答篇对应《信号与系统基本理论》教材的课后习题，对每一题均给出了常规解法，并在解题前附有简要的解题分析，便于学生理解。
希望本书的出版能对学生学习、理解和掌握《信号与系统基本理论》起到较好的辅助作
用，这也是编者的初衷。
本书由刘建宝主编并统稿，邵英教授对本书的编写提出了许多宝贵意见，并对本书进行了仔细审核。由于编者水平有限，书中难免存在缺点和疏漏，恳请广大读者批评指正。 
编 者

刘建宝，西安交通大学电气工程学院硕士研究生，华中科技大学电气工程博士 ，2005年至今在海军工程大学任教，海军工程大学电气工程学院副教授。

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信号与系统基本理论实验指导与习题解答