【作者】 万汉阳；

【导师】 李鹏；

【作者基本信息】 西安电子科技大学 ， 信号与信息处理， 2006， 硕士

【摘要】 雷达回波模拟器的主要功能是模拟产生目标回波、杂波和系统噪声，对雷达系统的性能进行测试，对雷达的操作员进行模拟训练。本文首先介绍了雷达回波理论的基本知识，讨论了基于相干视频信号模拟的方法，对回波信号利用映象法进行模拟，将目标在各种雷达工作环境下分为点目标和延伸目标；然后分别对目标和杂波进行建模和仿真，分析讨论了各种条件下雷达目标回波特性及杂波散射特性；最后，结合某仿真雷达研制项目，对每个脉冲重复周期用C++编程语言在嵌入式系统Vxworks下实时地模拟了固定目标和固定杂波的散射特性，及运动目标和运动杂波的轨迹和散射特性。该回波模拟器最多可以同时模拟31批固定和运动目标，15个地面和气象杂波。更多还原

【Abstract】 The radar echo simulator is mainly used to generate echoes of targets, clutter and noise of system, test the performances of system and train the radar operators.Firstly, the theories of radar echo signals and the simulative methods for coherent video signal are discussed. And echo signals are simulated by Mapping methods. And categorize the targets into two kinds, point targets and extended targets, according to the environments in which the radar works.Secondly, both the targets and clutter are modeled and simulated. Furthermore analyze the characteristics of echo and clutter whichever transfer channel such as scattering transfer.Lastly, the real-time simulations in some research radar project during each echo period are applied to both the fixed and moving targets as well as clutter by using the C++ language based on embedded-Vxworks. In these simulations, performances of the fixed and moving targets/clutter, such as scattering characteristics and moving curves provided with moving targets, are also illustrated for comparison conveniently. Moreover, the proposed echo simulator can process simultaneously even 31 fixed or moving targets and 15 ground or weather clutter.更多还原