基于MATLAB的雷达系统建模与仿真
关键词 雷达系统建模与仿真脉冲多普勒雷达脉冲压缩杂波 噪声 恒虚警
毕业设计说明书（毕业论文）外文摘要
Title Modeling and Simulation of Radar System Based on MATLAB
Abstract
The simulation of the radar system is made based on MATLAB and it’s additional components -SIMULINK .Firstly,the basic structure of the radar system is discussed ,along with the signal, clutter and noise, signal processing library.Then the modeling of each library is respectively studied. The library linear frequency modulation signal,barker code modulation of two phase coded signal,and the signal is studied, and the FA signals.The clutter with the probability distribution of Rayleigh , logarithmic normal , exponential and Weibull , and the power spectrum of the gaussian , Cauchy and polarographic , is studied in the Clutter library . All of them is simulated through zero memory nonlinear transform (ZMNL) method. The S S noise, stable - gaussian mixture noise, gaussian mixture distribution and Laplace distribution noise is studied in the Noise library library .Then, the high frequency amplifier, mixer, intermediate frequency amplifier and zero intermediate frequency orthogonal demodulation, matched filtering and moving target detection and constant false alarm rate processing is researched in the signal processing library .And then the modeling and simulation of signal processing is made with the example of linear frequency modulation signal .The validity and the correctness of the system modeling is verified by the simulation results.
Keywords Modeling and Simulation of radar system Pulse-Doppler(PD) Radar pulse-compression Clutter noise constant false alarm rate(CFAR)
目 次
1 绪论 1
1.1 国内外研究现状 1
1.2 课题的目的及意义 1
2 基于SIMULINK的雷达系统简介 3
2.1 SIMULINK简介 3
2.2 雷达系统仿真模型库的建模 5
3 雷达信号库 7
3.1 线性调频信号建模及仿真 8
3.1.1 定义及仿真 8
3.1.2 模糊图分析 8
3.1.3 线性调频信号模糊函数特点 9
3.2 相位编码信号建模及仿真 10
3.2.1 相位编码信号建模 10
3.2.2 模糊图仿真 10
3.2.3 13位巴克码二相编码信号特点 11