基于损失度的天波雷达抗有源压制干扰能力评估  

Capability Evaluation of Sky-wave Over-The-Horizon Radar Countering Active Blanket Jamming Based on Loss

作　　者：贾晶[1] 盛文[1] 

机构地区：[1]空军预警学院,武汉430019

出　　处：《电讯技术》2014年第12期1601-1606,共6页Telecommunication Engineering

摘　　要：为解决有源压制干扰条件下天波雷达抗干扰能力的定量评估问题,分析了用于天波雷达的压制干扰类型和天波雷达抗压制干扰措施,提出了发现概率损失度和探测区域损失度两个评估指标度量天波雷达抗有源压制干扰能力。基于时域处理、波束形成、换频等抗干扰措施的定量描述模型,推导出综合信干比方程,并结合信噪比方程、发现概率计算式和有效探测区域面积计算式建立了评估指标的计算模型。仿真分析了典型对抗条件下天波雷达的抗干扰能力,结果表明:天波雷达具有较强的抗有源压制性干扰能力,抗旁瓣干扰能力强于抗主瓣干扰。To quantificationally evaluating the capability of Sky-wave Over-The-Horizon-Radar（SWO-THR） countering jamming under active blanket jamming,types of active blanket jamming and countermeas-ures of SWOTHR are analyzed. Two evaluation indexes including detection probability loss and detectionarea loss are put forward to quantify the SWOTHR忆s countering jamming capability. Equation of comprehen-sive signal to jamming ratio is deduced based on quantificational models of countermeasures including timedomain processing,digital beamforming and changing working frequency. And then calculation models of e-valuation indexes are established based on above equation,signal to noise ratio equation,detection probabil-ity calculation equation and effective detection area calculation equation. Capability of SWOTHR counteringjamming under representative countermeasure condition is simulated and analyzed. Simulation results showthat SWOTHR has strong capability of countering active blanket jamming and the capability of counteringmain lobe jamming is stronger than that of countering side lobe jamming.

关 键 词：天波超视距雷达 抗有源压制性干扰 能力评估 发现概率损失度 探测区域损失度 

分 类 号：TN97[电子电信—信号与信息处理]