【作者】 柏利；

【导师】 宋耀良； 朱根才；

【作者基本信息】 南京理工大学 ， 通信与信息系统， 2004， 硕士

【摘要】 干扰环境模拟系统为雷达设备的抗干扰性能检测和评估提供了半实物仿真环境，它可以模拟雷达目标回波、欺骗性干扰、噪声压制性干扰、地海杂波与箔条干扰等复杂电磁波环境，本文首先讨论了脉冲多普勒雷达(PD雷达)干扰环境模拟系统的构成。 然后，分析了PD雷达的信号和杂波特征，研究了针对PD雷达的各种干扰技术，为研制PD雷达干扰环境模拟系统奠定必要的理论基础。 接着，研究了用于产生具有特定幅度和功率谱密度的杂波模拟方法。并根据PD雷达地海杂波功率谱计算的实时性要求，提出了一种基于闭合解的简捷的机载PD雷达杂波仿真算法。利用MATLAB，对各种分布的杂波和PD雷达杂波进行了仿真，给出了具体的仿真结果。 最后，为了可以方便地对移相器进行控制，产生速度欺骗干扰和噪声干扰，并在计算机程序界面中灵活地设置控制参数，本文设计了基于PCI总线的PD雷达干扰信号控制电路，实现了人机通信，并对速度欺骗干扰的频谱和数字化噪声的产生也作了分析。更多还原

【Abstract】 The jamming environment simulation system provides the environment of hardware-in-the-loop simulation for the measurement and evaluation of the performance of radar counter counter-measures. It can simulate the complex electromagnetic environment including echo signals, a variety of jamming and clutter. The framework of Pulsed-Doppler radar jamming environment simulation system is proposed firstly.Next, the signal and clutter characteristics, and the countermeasure techniques of PD radar are analyzed, which theoretically lay a foundation for developing the PD radar jamming environment simulation system.After that, this paper proposes a computational method to produce random sequences for clutter, these sequences not only obey the probability density distribution of the amplitude but also have a given power spectrum. In order to compute the clutter power spectrum of PD radar in real time, a closed-form algorithm is proposed. The Simulation results using MATLAB are given in the paper.At last, in order to control the phaseshift to generate noise jamming and velocity deception jamming conveniently, and to set the control parameters flexibly in the program interface, the jamming control circuits based on PCI bus are designed. The spectrum of radar signal in the presence of velocity deception jamming and the generation of digital noise are also analyzed.更多还原