基于随机阵列的相控阵T/R组件排布方法  

T/R Module Arrangement Method for Phased Array Radar Based on Random Array

作　　者：王罗胜斌 徐振海[1] 熊子源[1] 

机构地区：[1]国防科技大学电子信息系统复杂电磁环境效应国家重点实验室,湖南长沙410073

出　　处：《雷达科学与技术》2015年第5期530-534,542,共6页Radar Science and Technology

摘　　要：基于随机阵列理论,首先分析了二维随机阵列的方向图形成特点,对二维随机阵列的平均方向图进行研究,得到阵元位置的随机分布会影响方向图性能。在此基础上分析了实际阵元的随机排布,指出了两个在排布时会出现的问题,然后提出了最短距离排布的方法,使得问题得以有效解决。最后通过仿真对比最短距离排布的随机阵列与传统的密度加权阵之间的性能差异,根据仿真结果总结分析得出最短距离排布在抑制旁瓣和工程实现方面更优。Based on the theory of random array, the characteristics of average pattern of two-dimension al random array is analysed. Through study on the average pattern, we can see that the random distribution of array elements will affect the pattern. Then two problems are pointed out which will take place when ran- dom array elements are arranged. An minimum-distance arrangement method that can be an effective solution is put forward. And then the performance of this arrangement is validated with simulation compared with density weighted array. At last, these two arrangements are summarized to show the minimum-distance at-rangement is better in sidelobe rejection and engineering implementation.

关 键 词：二维随机阵列 阵元排布 最短距离排布 密度加权阵 

分 类 号：TN821.8[电子电信—信息与通信工程]