机载PD雷达信号环境仿真

【作者】 邓强；

【导师】 李瑞彬；

【作者基本信息】 电子科技大学 ， 通信与信息系统， 2003， 硕士

【摘要】 本文对脉冲多普勒雷达的目标回波、干扰信号、地杂波等雷达接收机前端的环境信号的仿真进行了阐述，对各环境信号进行了分析，建立了信号模型，并给出了仿真结果。第一章主要对仿真中涉及到的脉冲多普勒（PD）雷达和脉冲压缩（PC）雷达两种雷达体制进行了简述，给出了它们的定义，工作的环境，工作特点及各自的优缺点。第二章主要说明了系统仿真中所使用到的方法、理论。从第三章开始对仿真中各部分进行了具体描述。第三章讨论的是雷达天线的建模与仿真，给出了雷达天线的方向图函数及与雷达天线有关的两种抗干扰技术：旁瓣对消技术与旁瓣消隐技术，对它们的抗干扰效果进行了分析。第四章讨论了雷达回波信号的建模，主要涉及到的信号有相参脉冲信号、线性调频信号及巴克码信号，分析了它们各自工作在何种环境下及各自的特点。第五章对雷达干扰进行了阐述，主要的干扰信号有连续噪声调相干扰、伪随机码噪声干扰、多假目标干扰。雷达接收机的噪声也放在这一章讨论。第六章主要对机载雷达地杂波进行了分析，并给出地杂波的建模方法与仿真结果。第七章对三至六章所涉及的各部分进行了综合，给出了总的仿真结果。更多还原

【Abstract】 In the thesis, the environment signals such as targets reflections, jamming and clutters before the receiver of the Pulse Doppler Radar are presented; the analysis, modeling and simulation of these signals are discussed.In the first chapter the Pulse Doppler Radar and Pulse Compression Radar are introduced, include their definition, working condition and specialty.The method and theory of system simulation are discussed in chapter 2. From the chapter 3 every module of the simulation is described.Chapter 3 concentrates on the modeling and simulation of antenna, and present the azimuth function and the anti-jamming technology of the antenna. The anti-jamming technology include sidelobe canceller and sidelobe blanking, the effect of these anti-jamming technology are presented also. In the chapter 4 the modeling of targets reflection signals are described, these signals consist of coherent pulse, chirp and barker sequences. In chapter 5 the jamming such as phase modulation noise, binary pseudo random sequence and multiple pseudo targets are discussed. The noise of the receiver is also described in the chapter. The modeling and computation of clutters are discussed in chapter 6.In the last chapter, the results of the simulation are presented.更多还原