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

Narwant Singh Grewal; Munish Rattan; Manjeet Singh Patterh

doi:10.14429/dsj.64.4250

Narwant Singh Grewal Guru Nanak Dev Engineering College, Ludhiana
Munish Rattan Guru Nanak Dev Engineering College, Ludhiana
Manjeet Singh Patterh University College of Engineering, Punjabi University, Patiala

DOI: https://doi.org/10.14429/dsj.64.4250

Keywords: Digital beamforming array antenna system, linear antenna array, side lobe level, element failure, null steering, optimization, firefly algorithm

Abstract

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.

Defence Science Journal, 2014, 64(2), pp. 136-142. DOI: http://dx.doi.org/10.14429/dsj.64.4250

Author Biographies

Narwant Singh Grewal, Guru Nanak Dev Engineering College, Ludhiana

Mr Narwant Singh Grewal received the BTech (Electronics and Comm. Engg.) from SlIET longowal, Punjab, in 1997 and ME (ECE) from Guru Nanak Dev Engineering College, ludhiana, Punjab, in 2002. Currently pursuing his PhD at Punjab Technical university, Kapurthala, Punjab. he is working as Assistant Professor, in the department of Electronics and Communication Engineering, Guru Nanak Dev Engg. College, ludhiana. he is life member of ISTE, IE(I) and IETE.his chief research interests include evolutionary computing, electromagnetics, and antenna design.

Munish Rattan, Guru Nanak Dev Engineering College, Ludhiana

Dr Munish Rattan obtained his bTech (Electronics and Comm. Engg.) from from BBSBEC. Fathehgarh Sahib, in 2002 and ME (Electronics Engg.) from P.E.C. Chandigarh, in 2004, and PhD in 2010. he is currently working as Assistant Professor, in the Department of Electronics and Communication Engineering, Guru Nanak Dev Engg. College, ludhiana. he is presently guiding 6 PhD candidates.

Manjeet Singh Patterh, University College of Engineering, Punjabi University, Patiala

Dr Manjeet Singh Patterh, did his bTech (Electronics Engg.) from Madhav Institute of Technology and Science, Gwalior and MTech (Electronics Engg.) from Birla Institute of Technology and Science, Pilani, he did his PhD from Punjab Technical university Jalandhar. he is presently working as Professor in Department of Electronics and Communication Engineering at uCoE Punjabi university Patiala. he has published over 60 papers in international and national refereed journals and conferences. his current interests are Digital signal processing, wireless communication systems. he is member of IEEE and life member of ISTE, IE(I) and IETE.