摘要
对半圆环阵列综合采用奇异值分解和直接数据域的最小二乘法进行阵列天线自适应调零,应用于数据链系统进行抗干扰。通过奇异值分解的方法计算虚拟阵列的转换矩阵,提高了转换精度;由于直接对实时采集的快拍数据计算权值,适用于干扰快速变化的战争环境;计算机仿真结果中相同环境下该处理方法能在干扰处能够产生更深零陷,验证了其在复杂电磁环境下的有效性。
Singular value decomposition and direct data domain~ least square method are used to pro- duce null adaptively for semicircle array and used antijaming data link system. Singular value decomposi- tion method is used to calculate the virtual array transformation matrix, which can improve the conversion accuracy. The snapshot data of semicircle array is used to calculate the weights which are suitable for normal war environment changed rapidly. Computer simulation results produce a deeper null at interfer- ence direction, which verifies the effectiveness of the processing method even in complex electromagnetic environment.
出处
《现代防御技术》
北大核心
2014年第1期60-64,76,共6页
Modern Defence Technology
基金
航空科学基金资助项目(20110112003)
关键词
抗干扰
最小二乘法
虚拟阵列内插
antijamming
least square method
virtual interpolated array
