自适应阵列抗干扰性能的解析定量分析

Quantitative analysis via analytic expressions for anti-jamming performance of adaptive array

自适应阵列抗干扰性能常用输出信干噪比(Signal-to-Interference and Noise Ratio,SINR)损失、抗干扰改善因子(ECCM Improvement Factor,EIF)等来衡量,但目前尚缺乏解析的定量分析.为此,采用归纳法理论推导了均匀线阵条件下输出SINR损失、EIF等指标的解析表达式,定量获取了自适应阵列抗干扰性能.仿真实验验证了理论分析结果的有效性及快拍数对自适应阵列抗干扰性能的影响.

The anti-jamming performance of adaptive array is commonly measured by signal-to-interference and noise ratio(SINR)loss and electronic counter countermeasures(ECCM)improvement factor(EIF),which lack quantitative analysis via analytic expressions.Therefore,the analytic expressions of the two performance indexes are theoretically derived using the inductive method,based on the uniform linear array(ULA).Finally,the simulation results are also provided to demonstrate the effectiveness of the proposed method and the anti-jamming performance is also analyzed under the condition of the finite sampling snapshots.