摘要
对高频波段线型阵列方向图进行了分析。假定各阵元采用有向天线,研究了阵元天线的半功率波瓣宽度对阵列方向图栅瓣情况的影响,指出在采用窄波束条件下稀布阵列并不会引起栅瓣;分析了天线馈源位置准确和实际有误差情况下的阵列方向图,还分析了通道引起的波程差对方向图的严重影响,指出了可能的改进措施。
Linetype array directional diagram in HF band is analyzed here. According to the hypothesis that every element of the array adopts directed antenna, the effect of the directional diagram＇ s grating lobes caused by half power lobe width is studied, which indicates that thinned array will not introduce grating lobes when the elements of array adopt narrow beam antennas. Moreover, the array directional diagram is analyzed in case of both accurate and inaccurate the position of array. Also the severe influence due to the wave path difference caused by inconsistency pathway is studied to present a possible improvement measure.
出处
《现代防御技术》
北大核心
2010年第1期81-84,98,共5页
Modern Defence Technology
关键词
高频波段
方向图
误差
最佳加权
high frequency（HF） band
directional diagram
error
optimal weighting
