DBF体制侦察系统对相控阵雷达平均截获时间估计

Estimation of Average Interception Time for DBF Reconnaissance System to Phased Array Radar

低截获雷达的发展使得侦察系统失去了距离优势,相对于针对传统雷达而研制的侦察系统,新体制雷达侦察系统的灵敏度是最核心的技术指标。为实现高灵敏度的侦察系统,一般采用相控阵天线与数字波束形成的结合进行实现。数字波束形成(DBF)的瞬时带宽是制约侦察系统截获概率的最核心因素。分析影响侦察接收系统截获概率的关键因素和计算模型,给出典型数字波束形成带宽条件下,侦察系统对典型机载相控阵雷达的平均截获时间计算方法,并对侦察系统的平均截获时间进行了仿真,给出了不同驻留时间对截获时间的影响。

The development of low probability of intercept radar makes the reconnaissance system lose the distance advantage.Compared with the reconnaissance system developed for traditional radars,the sensitivity of reconnaissance system for new system radar is the most core technique index.In order to realize the reconnaissance system with high sensitivity,the combination of phased array antenna and digital beamforming(DBF)is convetionally used.The most core factor that restricts the probability of interception of reconnaissance system is instantaneous band.This paper analyzes the key factors influencing the intercept probability of reconnaissance receiving system and calculation model,gives the calculation method of average interception time for the reconnaissance system to the typical airborne phased radar under the condition of typical digital beamforming bandwidth,and simulates the average interception time of reconnaissance system,gives the influence of different dwell time on interception time.