雷达信号处理中解调和脉冲压缩处理的仿真.pdfVIP

雷达信号处理中解调和脉冲压缩处理的仿真 摘 要 针对现代雷达信号处理的主要方式,运用数字信号处理理论和 Matlab 软件研究 雷达信号处理的仿真问题。提出了一个仿真模型,该模型可以数字化正交解调雷达 信号和雷达系统中脉冲压缩处理的仿真过程。数字化正交解调可以从根本上克服 I 、 Q 两路相位不平衡对脉冲压缩的影响。为了能达到要求的距离分辨力，必须提高发 射信号的有效带宽，常用的方法是采用脉冲压缩的处理方式。常用的脉冲压缩有： 线性调频脉压处理、非线性调频脉压处理、相位编码脉压处理以及这几种脉冲压缩 处理的结合使用等。 本文将主要介绍数字化正交解调和线性调频脉压处理，并用 Matlab 对数字化 正交解调和脉冲压缩雷达信号处理系统进行了仿真,得到了雷达系统中各个处理点 上的具体信号形式,既包含幅度信息,又包含相位信息,该模型能较好地满足对雷达 信号处理的仿真要求,显示了用 Matlab 仿真雷达信号处理系统的方便、快捷的优点。 关键词：雷达信号，数字化正交解调，信号处理，脉冲压缩，仿真, MATLAB V 雷达信号处理中解调和脉冲压缩处理的仿真 Abstract For the modern radar signal processing is the main mode, the use of digital signal processing theory and Matlab software on the radar signal processing simulation. Proposed a simulation model, the model can be digital quadrature demodulation radar signals and radar pulse compression system in the simulation process. Digital quadrature demodulation can overcome the fundamental I, Q phase imbalance both the impact of pulse compression. To be able to meet the required distance resolution, to be on the launch signals the effective bandwidth, commonly used method is the use of pulse compression approach. Common pulse compression: LFM pulse pressure processing, handling non-linear FM pulse pressure, pulse pressure treatment phase encoding and compression deal with these types of pulses, such as the use of the combination. The article will focus on digital linear and FM Demodulation orthogonal pulse pressure processing, and using Matlab quadrature demodulation of digital radar pulse compression and signal processing systems for the simulation, by the radar system in dealing with various