A New Design Method of Wideband Beam-former

被引：0
|
作者：
Liu Jianguo [1 ,2 ]
Yuan Bingcheng [2 ]
机构：
[1] NorthWestern Polytech Univ, Sch Marine Engn, Xian 430033, Peoples R China
[2] Univ Navy Engn, Detp Weap Engn, Wuhan 430033, Peoples R China
来源：
2009 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP 2009) | 2009年
基金：
中国博士后科学基金;
关键词：
CZT; Wideband Beam-former based on CZT with Variable Aperture (CZTVA); Constant Beam-width Beam-former (CBB);
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A new design method of wideband beam-former with constant beam-width is proposed: within every frequency bin, assume all weighting sequences of beams oriented to different directions are the same, and then it can be deduced that the sequences in all sub-bands have the same spectrum, but a scale relationship is satisfied on the frequency axes. The scale is equal to the ratio of the central frequency in each sub-band to the reference frequency. Based on this idea, a method to calculate the beam-forming matrix is presented: supposing the array aperture changes with frequency, the spectrums of weighting sequences in all sub-bands can be calculated by Chirped Z Transform (CZT), and then they can be obtained by inverse fast Fourier transform (IFFT). The validity of these conclusions is validated with computer simulations.
引用
收藏
页码：1270 / +
页数：2
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