文章摘要
柯碧辉,毛卫宁.一种简单的宽带基阵设计和处理方法[J].声学技术,2002,(3):137~140
一种简单的宽带基阵设计和处理方法
A simple method of broadband array design and processing
投稿时间:2001-01-18  修订日期:2001-06-20
DOI:
中文关键词: 栅瓣  指向性函数  宽带  子阵
英文关键词: alias beam  directional response function  broadband  sub-array
基金项目:
作者单位
柯碧辉 东南大学无线电工程系, 南京, 210096 
毛卫宁 东南大学无线电工程系, 南京, 210096 
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中文摘要:
      文章提供了一种简单的基阵设计和处理方法,这种方法利用3个均匀子线阵,通过调整每个子阵的基本间距,来改变子阵的指向性函数,使得1个子阵的指向性函数的栅瓣或旁瓣对应另1个子阵指向性函数的零点,最后把3个子阵的指向性函数相乘,得到总的指向性函数。由于1个阵的指向性函数的零点抵消另1个阵的指向性函数的栅瓣或旁瓣,这样可以得到比较好的指向性函数。因为3个子阵的疏密程度不一,使得它们的栅瓣相互错开,因而特别适用于宽带信号。
英文摘要:
      This paper presents a simple method of array design and processing.Three linear,equally spaced sub-arrays are used in the procedure described in this paper.Here,By adjusting the sensor separation of each sub-array,which will change its directional response function,the alias beams or side lobes of the response function of one sub-array are arranged to where the zeros of the other lies,then multiplication is exerted on these three functions of form the final beam pattern.Good directivity index can be achieved by this means due to the alias beams or side lobes of one response function being suppressed by the zeros of the other.This means of beamforming is particularly suitable for broadband signal because of different interelement spacings of the three sub-arrays,which make their alias beams be non-overlapping.
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