华中科技大学硕士研讨生入学考试《信号与线性体系》考研大纲
代码: 824
第一有些 考试阐明
一、考试性质
全国硕士研讨生入学考试是为高级学校接收硕士研讨生而设置的。其间,《信号与线性体系》实施按一级学科统考。它的评价标准是高级学校优良本科结业生能抵达的及格或及格以上水平,以保证被选择者具有根柢的专业水平,并有利于各高级学校的择优选拔。
考试目标为参加2015年全国硕士研讨生入学考试的本科应届结业生,或具有平等学历的在职人员。
科学学位硕士研讨生和专业学位硕士研讨生招生考试中的《信号与线性体系》均选用本考试大纲。科学学位硕士研讨生招生考试中的《信号与线性体系》类另外代码为824
二、考试方法与试卷规划
(一) 答卷方法:闭卷,书面考试。
(二)答题时刻:180分钟。
(三)各有些内容的考试比例(满分150分)
信号与线性体系:150
(四)题型比例
填空题、判别题、证明题、核算题
第二有些 查询要害
一、信号与体系
(signals and systems)
1.信号、体系的概念
(concepts about signals and systems)
2.常用信号及其性质
(commonly used signals and their properties)
3.信号的波形图、根柢运算与奇、偶分化
(waveform of signals, transformation of the independent variable, even and odd decomposition of signals)
4.单位冲激信号和单位阶跃信号的概念及性质
(unit impulse and unit step functions and their properties)
5.体系的根柢性质
(basic system properties)
二、线性时不变体系
(linear time-invariant systems)
1. 线性时不变体系的性质
(properties of linear time-invariant systems)
2.线性时不变体系的零输入呼应
(zero-input response of linear time-invariant systems)
3. 线性时不变体系的零状况呼应
(zero-state response of linear time-invariant systems)
4. 卷积积分的性质及核算
(properties and computation of convolution integral)
5.卷积和的性质及核算
(properties and computation of convolution sum)
6.接连线性时不变体系的单位冲激呼应和单位阶跃呼应
(unit impulse response and unit step response of continuous-time lti systems)
7.离散线性时不变体系的单位取样呼应和单位阶跃呼应
(unit sample response and unit step response of discrete-time lti systems)
8.线性常系数微分方程的时域解法
(solution of linear constant-coefficient differential equations in time-domain)
9.线性常系数差分方程的时域解法
(solution of linear constant-coefficient difference equations in time-domain)
三、周期信号的傅里叶级数标明
(fourier series representation of periodic signals)
1. 线性时不变体系的特征函数
(eigen-function of linear time-invariant systems)
2. 接连时刻周期信号的傅里叶级数标明
(fourier series representation of continuous-time periodic signals)
3.接连时刻傅里叶级数的性质
(properties of ctfs)
4. 离散时刻周期信号的傅里叶级数标明
(fourier series representation of discrete-time periodic signals)
5. 离散时刻傅里叶级数的性质
(properties of dtfs)
6. 周期信号的频谱
(spectrum of periodic signals)
7. 周期信号鼓励下线性时不变体系的呼应
(response of lti systems for periodic input signals)
8. 抱负低通、高通、全通、带通、带阻滤波器
(ideal low-pass, high-pass, all-pass, band-pass and band-stop filters)
四、接连时刻傅里叶改换
(the continuous-time fourier transform)
1. 接连时刻傅里叶改换及非周期接连信号的频谱
(ctft and the spectrum of continuous-time non-periodic signals)
2. 接连周期信号的傅里叶改换
(fourier transform of continuous-time periodic signals)
3. 接连时刻傅里叶改换的性质
(properties of ctft)
4.接连线性时不变体系的频率呼应、幅频呼应、相频呼应
(the frequency response of continuous-time lti systems and its magnitude and phase)
5. 接连线性时不变体系的频域分析
(analysis of continuous-time lti systems in frequency domain)
6.无失真传输
(transmission without distortion)
7.线性相位的概念
(concept of linear phase)
五、离散时刻傅里叶改换
(the discrete-time fourier transform)
1. 离散时刻傅里叶改换及非周期离散信号的频谱
(dtft and the spectrum of discrete-time non-periodic signals)
2. 离散周期信号的傅里叶改换
(fourier transform of discrete-time periodic signals)
3. 离散时刻傅里叶改换的性质
(properties of dtft)
4.离散线性时不变体系的频率呼应、幅频呼应、相频呼应
(the frequency response of discrete-time lti systems and its magnitude and phase)
5. 离散线性时不变体系的频域分析
(analysis of discrete-time lti systems in frequency domain)
六、接连时刻信号的取样
(sampling of continuous-time signals)
1.冲激取样的原理
(principle of impulse-train sampling)
2.取样定理
(sampling theorem)
3.由取样值重建初始接连时刻信号的办法
(methods of reconstructing the original continuous-time signals from its samples)
七、拉普拉斯改换
(the laplace transform)
1. 拉普拉斯改换及其收敛域
(the laplace transform and its region of convergence)
2. 拉普拉斯逆改换
(the inverse laplace transform)
3. 拉普拉斯改换的性质
(properties of the laplace transform)
4.接连时刻体系的体系函数h(s)
(system function h(s) of continuous-time systems)
5.体系函数与体系因果性和平稳性的联络
(relationships between system function and the causality and stability of lti systems)
6. 由体系函数的极-零图制造一阶或二阶体系的频率特性曲线
(geometric evaluation of the frequency response of first-order or second-order lti systems from the pole-zero plot of h(s))
7.使用拉氏改换求零状况呼应
(solving the zero-state response using the laplace
transform)
8.接连体系的框图标明
(block diagram representations of continuous-time lti systems)
9.信号流图标明与梅森公式
(signal flow graph representations of lti systems and mason’s formula)
10.单边拉普拉斯改换及其性质
(the unilateral laplace transform and its properties)
11.使用单边拉普拉斯改换求解线性常系数微分方程
(solving differential equations using the unilateral laplace transform)
8、z改换
(the z-transform)
1. z改换及其收敛域
(the z-transform and its roc)
2. 逆z改换
(the inverse z-transform)
3. z改换的性质
(properties of the z-transform)
4.离散时刻体系的体系函数h(z)
(system function h(z) of discrete-time systems)
5.体系函数与体系因果性和平稳性的联络
(relationships between system function and the causality and stability of lti systems)
6. 由体系函数的极-零图制造一阶或二阶体系的频率特性曲线
(geometric evaluation of the frequency response of first-order or second-order lti systems from the pole-zero plot of h(z))
7. 使用z改换求零状况呼应
(solving the zero-state response using the z-transform)
8.离散时刻体系的框图标明
(block diagram representations of discrete-time lti systems)
9. 单边z改换及其性质
(the unilateral z-transform and its properties)
10.使用单边z改换求解线性常系数差分方程
(solving difference equations using the unilateral z-transform)
九、状况模型分析
(state model representation)
1. 接连时刻和离散时刻线性时不变体系的状况模型标明
(state model representation for both continuous-time and discrete-time lti systems)
2. 状况模型(状况方程、输出方程)的树立
(construction of state models)
3. 状况方程的求解(包括时域及改换域解法)
(solution of state equations)