摘要
相控阵波束合成的最终目的是提高接收信号的信噪比(Signal-to-Noise Ratio,SNR),但是由于共形阵阵面是弯曲的,各个阵元具有不同的接收SNR,把所有阵元移相后直接进行波束合成并不能保证获得最大SNR。在考虑单元方向图影响情况下,通过对共形相控阵天线接收SNR解析表示,采用迭代方式对阵元是否接入波束合成进行判断,确保了天线具有最大SNR输出。计算机仿真证实了阵元选择方法的正确性。
The ultimate purpose of phased array is to improve the signal-to-noise ratio(SNR)of the received signal through beamforming.However,direct output using all elements of conformal array could not ensure the maximum SNR even with correct phase shifting,because each SNR of element is different due to the curved array surface.The analytic expression of the output SNR is achieved when considering the pattern of each element for any conformal phased array.The iterative method is used to judge whether the element is connected to the beam synthesis to ensure that the antenna has the maximum SNR output.Finally,computer simulation proves the correctness of the beamforming method.
作者
张华健
李聪颖
黄治磊
周文斐
曾浩
ZHANG Huajian;LI Congying;HUANG Zhilei;ZHOU Wenfei;ZENG Hao(Beijing Institute of Satellite Information Engineering,Beijing 100095,China;System Research Institute of Naval Academy,Beijing 100036,China;School of Microelectronic and Communication Engineering,Chongqing University,Chongqing 400044,China)
出处
《电讯技术》
北大核心
2024年第3期436-441,共6页
Telecommunication Engineering
基金
“十四五”国防预研基金(629010204)。
关键词
相控阵
共形阵列
波束合成
阵元选取
phased array
conformal array
beam synthesis
array element selection
