基于信干噪比增益的自适应阵列抗干扰性能分析  

Anti-Jamming Performance Analysis of Adaptive Array Based on Signal-to-Interference-Noise Ratio Gain

作　　者：许稼[1] 高阳 贾鑫 龙腾[1] 

机构地区：[1]北京理工大学信息与电子学院,北京100081 [2]装备学院光电装备系,北京101416

出　　处：《北京理工大学学报》2015年第7期720-724,共5页Transactions of Beijing Institute of Technology

摘　　要：针对自适应阵列现有的抗干扰性能评价指标存在权系数伸缩敏感,难以直观反映后续信号处理性能等缺点,在现有性能指标分析基础上,提出了信干噪比(SINR)增益指标,并给出了均匀线性阵列SINR增益的解析表达式.新指标具有明确物理含义,可方便比较不同空域滤波器的抗干扰性能,并定量反映抗干扰后续的信号处理性能.仿真实验结果验证了提出新方法的有效性.The existing performance speculations of adaptive array have some shortcomings likesensitivity of weight scaling or the difficulty of reflecting the successive processing performance.ratio （SINR） gain, for evaluating the anti-jamming performance of adaptive array. Besides, theanalytic expression of SINR gain was also derived for uniformly linear spaced array. Theproposed SINR gain shows a clear physical meaning and can compare the anti-jammingperformance for different anti-jamming spatial filters. Furthermore, the successive performancecan be directly obtained via the proposed SINR gain. Finally, the results of numericalexperiments show the effectiveness of the proposed method.

关 键 词：自适应阵列 抗干扰 信干噪比增益方向图 信干噪比损失 

分 类 号：TN974[电子电信—信号与信息处理]