C#与MATLAB混合编程的测速雷达信号处理软件设计

摘要研究复杂运动目标时，从回波信号中提取其运动参数具有重要意义，而回波信号是一种非平稳信号，可采用对信号瞬时频率估计的方法测量目标运动速度。本文基于时频分析方法实现测速雷达回波信号处理软件的设计。本文研究了多普勒测速原理，建立了回波信号的数学模型，介绍了时频分析方法基础理论，总结了短时傅立叶变换和 Wigner-Ville 分布的定义及性质，利用这两种方法完成对信号瞬时频率的估计，通过仿真实验验证了时频分析方法的有效性和可行性。
在对雷达回波信号进行时频分析的基础上，利用 MATLAB 生成 DLL 格式的共享库，由 Visual C#进行调用的混合编程思想，设计了一款对测速雷达回波信号进行简洁高效处理的软件，完成了对目标运动参数的提取。8199
关键词   多普勒频率   短时傅立叶变换 Wigner-Ville变换混合编程
Title   Doppler Radar Signal Processing Software Design Based On Mixed Programming of MATLAB and C#
Abstract
Movement parameters extraction from the echo signal is very important for the study of
moving target. And target velocity can be obtained by estimating the instantaneous
frequency of echo signal which is non-stationary. This paper realized the design of the
Doppler radar echo signal processing software based on the time-frequency analysis.
This paper studied the Doppler identification theory, established the mathematical
model of the echo signal, then introduced the method of time-frequency analysis
theory, summarized the short time Fourier transform and Wigner-Ville distribution of
the definition and properties, and used the two methods of signal to complete the
instantaneous frequency estimation, the simulation results verify the feasibility and
effectiveness of the time-frequency analysis method.
On the basis of radar signal processing with time-frequency analysis, the paper adopted
the mixed programming ideas that MATLAB generated shared library of DLL format
which called by Visual C#, and designed processing software which can process the
Doppler radar echo signal simply and efficiently, and completed extraction of the target
motion parameters.
Keywords   the Doppler frequency        short-time Fourier transform
          Wigner-Ville transform       mixed programming
目录
1 绪论. 1
1.1 研究背景与意义 . 1
1.2 研究现状   1
1.2.1 国内测速雷达应用与发展   1
1.2.2 时频分析理论发展史 . 2
1.3 本文的主要内容 . 3
2 测速雷达原理 . 5
2.1 多普勒测速原理 . 5
2.1.1 多普勒效应 . 5
2.1.2 多普勒测速原理 . 5
2.2 运动目标回波信号模型   5
2.2.1 膛内测速系统组成 . 5
2.2.2 回波信号模型 . 6
3 时频分析理论 . 9
3.1 时频分析理论基础 9
3.1.1 解析信号 . 9
3.1.2 瞬时频率 10
3.1.3 信号分辨率 10
3.2 傅立叶变换 12
3.3 短时傅立叶变换的定义及性质 . 13
3.4 WIGNER-VILLE 分布的定义及性质   14
3.5 回波信号的瞬时频率估计 . 15
3.5.1 短时傅立叶变换法估计回波信号的瞬时频率 . 15
3.5.2 WVD 法估计回波信号的瞬时频率 . 16
3.6 信号仿真 16 C#与MATLAB混合编程的测速雷达信号处理软件设计:http://www.youerw.com/tongxin/lunwen_6438.html