相干源诱偏下极化对相位干涉仪导引头测角影响研究  

Influences analysis of polarization on phase-interferometer PRS angle measurement with decoy of coherent source

作　　者：张亮[1] 徐振海[1] 吴迪军[1] 王雪松[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《电波科学学报》2012年第4期685-690,845,846,共8页Chinese Journal of Radio Science

基　　金：国家自然科学基金项目(60901072)资助课题

摘　　要：在考虑极化影响的情况下,建立了相位干涉仪导引头跟踪相干两点源的数学模型,分析了雷达信号、诱饵信号及导引头接收天线的极化方式对被动雷达导引头测角性能的影响,推导了导引头跟踪辐射源时极化应满足的条件,并采用庞加莱(Poincare)极化球描述了极化与导引头指向角度的关系。指出利用极化信息可以改善导引头对雷达和相干源诱饵的分辨,为极化信息在被动导引头中的应用提供了依据。Under the consideration of polarization, the angle measurement mathe- matical model of phase-interferometer PRS tracing coherent dual sources is presen- ted. Several key factors including the polarization of radar, decoy and receiving an- tenna were taken into account,and their effects on passive-radar-seeker（PRS）angle measurement performance are also analyzed. The polarization condition for PRS to trace radar or decoy is determined, and the Poincare sphere is finally introduced to describe the relationship between polarization and PRS pointing. The enhanced per- formance of discrimination between radar and coherent decoys is validated by simu- lation,which could provide a basis for the application of polarization information in PRS.

关 键 词：被动雷达导引头 极化 相干两点源 测角 相位干涉仪 

分 类 号：TJ765.331[兵器科学与技术—武器系统与运用工程] TN974[电子电信—信号与信息处理]