摘要
在相控阵天线设计中,增加阵元间距能提高天线分辨率,但天线波束会出现栅瓣,栅瓣多值性导致目标位置模糊,接收机错误跟踪。因此,阵元间距的合理取值是相控阵天线设计的重要内容。首先建立了阵列天线方向图函数模型,然后推导出矩形阵和三角阵栅瓣出现的位置及不出现栅瓣时阵元间距的取值范围,最后通过MATLAB仿真来验证结论的正确性。
In the design of phased array antenna,increasing array element spacing can improve the resolution of antenna.However,antenna beam will appear grating lobes in this case.The multiple values of grating lobe leads to fuzzy target location and receiver bug tracking.Therefore,the reasonable array element spacing is important in the design of phased array antenna.Through of establishment for beam pattern function of array antenna,the location of the grating lobe and the range of array element spacing are obtained,where the grating lobes do not appear.These results are used for uniform linear array,rectangular and triangular planar array.The MATLAB simulation proves that these conclusions are correct.
出处
《电子技术应用》
北大核心
2014年第3期104-107,111,共5页
Application of Electronic Technique
基金
重庆市自然科学基金重点项目(cstc2013jjB40005)
中央高校基金重点项目(CDJZR12165501)
关键词
栅瓣
方向图
阵元间距
grating lobe
radiation pattern
element spacing
