摘要
针对宽带电子侦察应用,对宽带二维阵列数字波束形成(DBF)的优化组阵问题开展研究。分析了均匀矩形面阵、非均匀矩形面阵和多圈圆形面阵的宽带二维数字波束形成性能,通过比较得出了多圈圆形面阵是较优的组阵形式。并且,提出了一种适用于宽带二维阵列数字波束形成的优化组阵凸优化方法,建立了宽带二维阵列DBF优化组阵的凸优化数学模型。以64元多圈圆面阵为例,给出了组阵优化后的波束图仿真结果。可以实现在2:1带宽内,±45°×±45°扫描无栅瓣,主副瓣比优于12dB,增益大于17dBi,从而验证了本文方法的有效性。
A wide-band two-dimensional arraying method for digital beam-forming(DBF)is studied for the application of electronic reconnaissance.The performance of uniform rectangular array,non-uniform rectangular array,and multi-circle circular array are compared and analyzed.The results indicate that the multi-circle circular array has a better performance.A convex optimization method of wide-band two-dimensional arraying for DBF is proposed,and a model of convex optimization is built up.An example of optimized multi-circle circular array of 64 antenna elements is given.The simulation results show that the proposed circular array can work at 2:1 bandwidth,achieve array gain higher than 17dBi,and the side-lobe level lower than-12dB,with±45°×±45°two-dimensional scanning.The efficiency of the proposed method is verified with thses simulations.
作者
李智
叶君永
马达
彭胜
LI Zhi;YE Jun-yong;MA Da;PENG Sheng(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)
出处
《电子信息对抗技术》
2019年第5期62-66,81,共6页
Electronic Information Warfare Technology
关键词
宽带二维阵列
二维数字波束形成
多圈圆形面阵
优化组阵
凸优化
wide-band two-dimensional array
two-dimensional digital beam-forming
multicirclecircular array
optimal arraying method
convex optimization
