用数控移相器实现对脉冲多普勒雷达的干扰

摘要

Pulse Doppler radar is a new type of radar system,its development is based on the moving target indication radar.In the past,the devices to jam the pulse Doppler radar are traveling wave tubes,which adds sawtooth wave signals between solenoid and ground to achieve frequency shift of carrier frequency,adds noise signals to realize the phase modulation of noise,this method has many disadvantages.With the development of digital technology rapidly,the digital control phase shifter has advantages of small size,high velocity,low level input,easy control,these advantages just are shortcomings of travelling-wave tubes,so using digital control phase shifter to realize phase or frequency shifting has a lot of advantages,which can performs more effective jamming to pulse Doppler radars.This paper mainly discusses the specific methods to perform noise jamming and velocity deception jamming to the pulse Doppler radars by using the digital control phase shifter,and gives the corresponding simulation and analysis,which provides theoretical references and design basises for technical realization.%脉冲多普勒雷达是一种新型体制雷达,其发展基础源于动目标显示雷达。过去,对脉冲多普勒雷达进行干扰的器件是行波管,在其螺线极与地之间加锯齿波信号实现载频移频,加噪声信号实现噪声调相,这种方法存在诸多弊端。随着数字技术的快速发展,数控移相器具备小体积、高速度、低输入、易控制等优点,而这些特点正是行波管所欠缺的。故采用数控移相器实现移相和移频较之行波管均有很大优势,能对脉冲多普勒雷达实施更有效的干扰。主要讨论使用数控移相器对脉冲多普勒雷达实施噪声干扰和速度欺骗干扰的具体方法,并进行了相应的仿真和分析,为技术实现提供了理论参考和设计依据。