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Transient Scattering by Dielectric bodies-A Comparison of TLM and TDIE Methods

R. Srinivasa Rao*, P.V. Subbaiah**, B. Prabhakara Rao***

* Professor, Dept of ECE, SVEC, Tirupathi, A.P, India.

** Principal, ASIST, Krishna Dist, A.P, India.

*** Professor, College of Engineering, JNTUK, Kakinada, A.P, India.

Periodicity:May - July'2012
DOI : https://doi.org/10.26634/jcs.1.3.1890

Abstract

The radar signature calculations play an essential role in the design and functioning of today’s radars in detecting the surface and air targets. Radar interrogation is essentially a transient electromagnetic scattering process and direct transient analysis provides an opportunity to observe and to interpret scattering behavior. We present in this paper a comparison of two popular time domain numerical techniques widely used for direct transient analysis, namely, the transmission line matrix (TLM) method and the time-domain integral equation (TDIE) method. Both the methods belong to the category of time domain techniques; however, their modeling philosophy is quite different. Whereas the TLM method is based on the implementation of the Huygens principle by modeling the space with a system of interconnected transmission-lines, the TDIE is based on well known method of moments. The comparison is made via standard canonical shaped dielectric bodies, namely, a cube, and a sphere, mainly to address the factors affecting accuracy, efficiency, and the required computer resources.

Keywords

Radar signature, Transmission line matrix method, Symmetrical Condensed Node, Time-domain integral equation method, Moment method

How to Cite this Article?

Rao, R. S., Subbaiah, P. V., and Rao, B. P. (2012). Transient Scattering By Dielectric Bodies- A Comparison Of TLM And TDIE Methods. i-manager’s Journal on Communication Engineering and Systems, 1(3), 11-16. https://doi.org/10.26634/jcs.1.3.1890

References

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