【作者】 王军宁；

【导师】 杨绍全；

【作者基本信息】 西安电子科技大学 ， 电路与系统， 2002， 硕士

【摘要】 反辐射导引头技术是重点的军事研究项目，其技术性能的好坏直接影响到反辐射导弹的攻击性能。由于导引头具有很宽的工作频率范围，天线孔径尺寸受弹径限制，因此导引头的角分辨率低。对于主波束内同时存在的多个辐射源信号难以实现精确测向和跟踪。论文主要的目的是研究反辐射导引头对多源信号的角分辨与角跟踪的算法。 在这篇论文中，首先研究了反辐射导引头对多源信号的角分辨方法。对于导引头主波束内存在的多个脉冲辐射源，研究了用时域选通(或称重频跟踪)和聚类分析的方法，分离与跟踪特定的辐射源。对于同时进入导引头主波束内的多个干扰源，特别是时域、频域不可分辨的噪声调频干扰，分析了接收机对干扰源的响应特性以及多个干扰源同时作用时对角度测量的影响。然后，在此基础上研究了基于聚类分析和空间滤波的角分辨算法，并将此算法运用于导引头对两干扰源的跟踪过程中。仿真试验的结果表明，文中的方法是行之有效的，极大的提高了导引头对多目标的角分辨能力。另外，对于多源信号的角分辨与角跟踪过程中所遇到的实际问题，如旁瓣跟踪识别、抗多径、抗闪烁干扰等也进行了分析并提出了处理方法。更多还原

【Abstract】 Anti-Radiation Radar Seeker (ARRS) is one of important military research projects. Its technical performance directly influences the attack effect of Anti-Radiation Missile (ARM). Due to its wide operating frequency range and its restricted antenna aperture by missile diameter, the angular resolving power of ARRS is limited. It is difficult to make seeker resolve angle of arrival and track the desired source in multiple source signal environment. This paper is focused on research of algorithm for angle resolution and tracking of ARRS to multiple source signals.In this paper, a detailed research is firstly given on the method of angle resolution of ARRS to multiple source signals. A method combining PRF Tracking with Cluster Analysis is presented for ARM seeker to resolve angles of arrival of multiple pulse emitter sources. For the spatial identification of unresolved radar jamming, especially multiple noise frequency-modulated jammers overlapped within time domain and frequency domain, this paper analyses the response character of receiver to jamming source. By studying statistic response character and influence on measuring angle, a new method for angular resolution is put forward based on clustering analysis and spatial filter. Applied to ARRS ’s tracking process to two jammers, this method is proved to be reliable and effective by simulation result, and the angular resolving capacity for multiple targets is greatly improved. In addition, some practical problems encounted in the process of angle resolution and tracking to multiple source signals, such as sidelobe and multipath recognition, tracking to glint jammers, are analyzed and disposed.更多还原