A Linear Antenna Array Failure Correction with Null Steering using Firefly Algorithm

被引：18

作者：

Grewal, N. S. ^{[1
]}

Rattan, Munish ^{[1
]}

Patterh, Manjeet Singh ^{[2
]}

机构：

[1] Guru Nanak Dev Engn Coll, Ludhiana 141006, Punjab, India

[2] Punjabi Univ, Univ Coll Engn, Patiala 147002, Punjab, India

来源：

DEFENCE SCIENCE JOURNAL | 2014年 / 64卷 / 02期

关键词：

Digital beamforming array antenna system; linear antenna array; side lobe level; element failure; null steering; optimization; firefly algorithm; INTERFERENCE SUPPRESSION; SIDELOBE LEVEL; AMPLITUDE;

D O I：

10.14429/dsj.64.4250

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The element failure of digital beam forming array antenna systems used in defence equipment increases the side lobe power level which distorts the beam pattern of the antenna array. The problem of array failure correction becomes more complex when null steering conditions are required to be added. In this paper, the problem of linear antenna array failure has been addressed with multiple wide band null steering using firefly algorithm (FA) by controlling the amplitude and phase excitation of array elements. A fitness function in the form of template has been formulated to obtain the error between original (pre-failed) side lobe pattern and measured side lobe pattern and this error function has been minimized using FA. Numerical example of element failure correction of element failure of array along with multiple nulls is presented to show the capability of this flexible approach.

引用

页码：136 / 142

页数：7

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