Multi-Source Detection Performance of Some Linear Sparse Arrays

Abstract

An investigation on fractal-based sub-array (FBSA), of isotropic elements, that evolves from two Non-uniform Linear arrays, i.e. the minimum redundancy array and fractal Array, with a hole-free difference co-array shows competitive performance in direction of arrival estimation using (spatial smoothing-) MUSIC algorithm. Numerical experiments demonstrate that the algorithm can resolve 2° separation between sources. Considering mutual coupling, in terms of RMSE, the FBSA performs better than other competing configurations.

Keyword:

• Degrees of freedom
• Direction of arrival
• Fractal sub-array
• Mutual coupling
• Sparse array
• Spatial smoothing-MUSIC

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

P. Raiguru

Priyadarshini Raiguru (M’16) received the BE degree in electronics and communication engineering from Utkal University, Bhubaneswar, India, in 2006 and the MTech degree in communication system engineering from Siksha ‘O’ Anusandhan University, Bhubaneswar, India, in 2012. She is currently pursuing the PhD degree in electronics science and technology at Berhampur University, Berhampur. Her current research interests include sparse array processing, fractal antenna engineering. Email: [email protected]

D. C. Panda

Dhruba Charan Panda was born in 1978. Obtained his PhD in 2006. He is having thirteen years of teaching experience. He is a recipient of CSIR senior research fellowship and 2006 DST young scientist award. Presently, he is working as a reader in Electronic Science Department of Berhampur University, Odisha, India. His research interest is computational electromagnetics. Email: [email protected]

R. K. Mishra

Rabindra Kishore Mishra (SM 2000) was born at Cuttack in India in 1963. He is at present a professor in the Electronic Science and Technology Department of the Berhampur University. He has researched extensively in the areas of planar antennas, fractal antennas, meta-materials, applications of soft computing techniques to analysis and design of planar antennas, and meta-surfaces. He had visited the University of Birmingham as a British Commonwealth Fellow during 1999–2000. He has supervised 15 doctoral theses. He has published two monographs and over 150 learned articles in journals of repute and proceedings of conferences, seminars, etc. These publications have earned the IETE Sir J C Bose best application article award (1999) and Shri Hari Ohm Ashram Prerit Hariballabha Das Chunilal Research Endowment Award (2000), Samanta Chandra Sekhar Award in Engineering & Technology (2008), which is the highest award by the Govt. of Orissa. He is a reviewer for IEEE TAP, IEEE AWPL, IEEE APM, MOTL, etc.