Hybrid MoM-CG RCS Estimation of Dihedral Corner Reflector

Authors

  • Deepa K. Sasidharan Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India
  • Subhalakshmy A.B. Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India
  • Vineetha Joy Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India
  • Hema Singh Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India

Keywords:

Radar cross section, method of moments, conjugate gradient, dihedral corner reflector

Abstract

An efficient numerical-based accelerating method for the computation of radar cross section of conducting dihedral corner reflector is presented. The RCS formulation is based on Method of Moments. The integral equation describing the scattering problem is discretized into a set of linear system of equations, which in turn is solved for the equivalent currents defined on the structure via equivalence principle. The equivalent currents thus obtained are further processed to determine the radar cross section. The entire process is further improved in terms of computational memory and time for larger number of unknowns by means of Conjugate Gradient-based accelerating algorithm. The computed results are validated against those obtained through simulation in COMSOL and the measurements.

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Author Biographies

Deepa K. Sasidharan, Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India

Deepa K. Sasidharan is pursuing M.Tech. (Electronics and Communication) in Cochin University of Science & Technology (CUSAT), Kochi. She is doing her M.Tech. project in Centre for Electromagnetics (CEM) of CSIR-NAL, Bangalore. She obtained her B.Tech. (ECE) degree in 2015 from CUSAT, Kochi. Her research interests include radar cross section (RCS) based studies, and accelerated numerical-based approaches for EM analysis. 

Subhalakshmy A.B., Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India

Subhalakshmy A.B. obtained her M.Tech. (Electronics and Communication) in 2016 from Cochin University of Science & Technology (CUSAT), Kochi. She obtained her B.Tech. (ECE) degree in 2014 from CUSAT, Kochi. She worked as Project Scientist in Centre for Electromagnetics (CEM) of CSIR-NAL, Bangalore. Her research interests include radar cross section (RCS) based studies, and accelerated numerical based approaches for EM analysis. 

Vineetha Joy, Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India

Vineetha Joy is currently working as Scientist at Centre for Electromagnetics of CSIR-National Aerospace
Laboratories, Bangalore, India since March, 2016. She obtained B.Tech in Electronics and Communication
Engineering with Second Rank from University of Calicut in 2011. She received M. Tech. degree with First Rank in RF & Microwave Engineering from Indian Institute of Technology (IIT) Kharagpur in 2014. As part of M Tech program, Ms. Vineetha Joy formulated and simulated Propagator Matrix based approach to
analyze electromagnetic fields in a cylindrically stratified media, which has potential applications in the analysis of Microstrip Antennas, Dielectric Resonator Antennas, Optical Fibres etc. During 2014-2015, she worked as a research scholar in the Department of Avionics, Indian Institute of Space Science and
Technology, Trivandrum, India. The research activities in this tenure were focused on retrieval of electromagnetic parameters of various metamaterial structures and studies on metamaterial cloaks
at microwave frequencies with emphasis on Transformation Optics. Ms. Vineetha Joy has presented various research papers in prestigious international symposia and conferences. Her research interests include Computational Electromagnetics, Radar Cross Section Studies, Metamaterials, and Electromagnetic Design and Performance Analysis of Radomes.

Hema Singh, Centre for Electromagnetics (CEM),CSIR-National Aerospace Laboratories, Bengaluru-560017, India

Hema Singh is working a principal scientist in Centre for Electromagnetics, National Aerospace Laboratories (CSIR-NAL), Bangalore, India. She also holds post of Associate Professor in CSIR Academy, AcSIR. She received Ph.D. degree in Electronics Engineering from IIT-BHU, Varanasi India in Feb. 2000. For the period 1999-2001, she was Lecturer in Physics at P.G. College, Kashipur, Uttaranchal, India. She was a Lecturer in EEE of Birla Institute of Technology & Science (BITS), Pilani, Rajasthan, India, for the period 2001- 2004. She joined CSIR-NAL as Scientist in January 2005.She has been a member of IEEE-Industry Initiative Committee, IEEE, IET, IETE, Indian Society for Advancement of Material and Process Engineering (ISAMPE), and Aeronautical Society of India. Her active areas of research and teaching interests are in the domain of: Computational Electromagnetics (CEM) for Aerospace Applications, RF and Microwaves. More specifically, the topics of the sponsored projects she has contributed in are Radar Cross Section (RCS) studies including Active RCS reduction, EM analysis of propagation in an indoor environment, phased antenna arrays, adaptive array processing, and conformal array. Dr. Singh has authored or co-authored 11 books, 1 book chapter, 7 software copyrights, 235 scientific research papers and technical reports. She
has also supervised over 40 graduate projects and postgraduate dissertations.Dr. Hema Singh received Best Woman Scientist Award in NAL, Bangalore for period of 2007-2008 for her contribution in area of phased antenna array, adaptive arrays, and active RCS reduction.

References

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Published

2020-10-22

How to Cite

Deepa K. Sasidharan, Subhalakshmy A.B., Vineetha Joy, & Hema Singh. (2020). Hybrid MoM-CG RCS Estimation of Dihedral Corner Reflector. International Journal of Advances in Microwave Technology, 2(3), 110-116. Retrieved from https://ijamt.com/index.php/ijamt/article/view/53