节点文献
近程测距雷达引信的方案设计
【作者】 王晓明；
【作者基本信息】 电子科技大学 ， 电子与通信工程， 2008， 硕士
【摘要】 引信作为防空导弹的重要组成部分,主要完成在弹道末端探测目标,适时起爆战斗部的任务。其战技指标及方案对于防空系统的总体效能有着重要的影响,其系统方案及性能要求必须满足系统的总体要求。本文介绍了研究背景及国、内外研究动态,根据武器系统总体方案确定了引信工作体制的选择原则。对连续波多普勒、连续波调频、脉冲及脉冲多普勒以及复合调制的伪随机脉冲多普勒体制的基本工作原理进行了阐述,对其距离截止能力进行了必要的分析。结合系统总体方案确定了引信的总体设计方案。对引信的天线系统的主要参数进行了必要的分析设计,确定了天线设计方案,并根据分析结果对天线系统进行了初步的仿真、优化设计。根据武器系统设备小型化的设计要求,对线性调频引信收、发系统的总体方案进行了设计,对引信的调频参数及系统灵敏度进行了计算分配,利用较为成熟数字技术及工程经验,完成了引信总体的工程设计方案规划。根据确定的调频参数及工程经验对线性调频引信方案的测距误差进行了分析,计算。利用信杂比概念对引信的低空安全性能进行了简单的分析。对方案中存在的不足,提出了初步的改进方向。
【Abstract】 As an important component of the air defense missile, fuse is mainly to complete the mission of detecting targets in the missile terminal and detonating warhead in good time. Because its tactical and technical characteristics and plan have the great influence on the overall efficiency of the air defense system and its requirements of the plan and performance in the system must meet ones of the system.Firstly, the background and developing trends at home and abroad of this project are presented. The selection rules of the operational systems of fuse have been defined via the overall plan of the weapon system in this paper. Then, the basic operational principles of the continuous-wave Doppler, continuous-wave frequency modulation, pulse and pulsed-Doppler and false random pulsed-Doppler systems compositely modulated are depicted and the probability of the distance cutoff of fuse is analyzed. Lastly, the overall plan of design of the certain fuse is defined in combination with one of the system.The main parameters of the antenna system for fuse are analyzed and designed. The plan of the antenna is defined and the antenna system is initially simulated and optimized by the analyzed results.The overall plan of design for the receiving and transmitting system of the linear frequency-modulated fuse is completed according to the requirement of miniaturization of devices in the weapon system. The program of the overall engineering design plan for fuse is completed via computation and distribution of the frequency-modulated parameters and sensitivity of the system for fuse with the riper digital technology and engineering experience.The ranging error of the linear frequency-modulated fuse plan is analyzed and computed through the defined frequency-modulated parameters and engineering experience. The performance of fuse in the low-altitude safety is simply analyzed with the use of the concept of the signal-to-clutter ratio. The improved aspects are initially pointed out according to the drawbacks in the presented plan.