PIER
 
Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 43 > pp. 59-74

Energy Patterns for a Conducting Circular Disc Buried in a Homogeneous Lossy Medium and Excited by Ultra-Wideband Generalized Gaussian Pulses

By M. G. M. Hussain and S. F. Mahmoud

Full Article PDF (771 KB)

Abstract:
In this paper, we analyze the scattering of ultra-wideband (UWB) electromagnetic pulses from a conducting circular disc, buried in a homogeneous lossy medium. The transient currents excited on the surface of the conducting disc are derived, in the frequency domain, as series expansion of a set of orthogonal functions that satisfy specified boundary conditions. The amplitude spectral density of the surface currents are plotted for a given disc radius, and depth in a lossy medium. Aclosed form solution for the backscattered electric field strength in the far zone is derived in the frequency domain for the case of a normally-incident plane wave having the time variation of a generalized Gaussian pulse (GGP). The time variation and the energy density spectrum of the GGP signal and that of the backscattered signal in the far zone are plotted too. Computer plots of the backscattered energy versus observation angle, depth, disc radius, altitude from surface of the lossy medium, and the electric properties of the medium, result in various energy patterns that are desirable for the design and performance analysis of UWB ground-penetration impulse radar.

Citation: (See works that cites this article)
M. G. M. Hussain and S. F. Mahmoud, "Energy patterns for a conducting circular disc buried in a homogeneous lossy medium and excited by ultra-wideband generalized gaussian pulses," Progress In Electromagnetics Research, Vol. 43, 59-74, 2003.
doi:10.2528/PIER02120201
http://www.jpier.org/pier/pier.php?paper=0212021

References:
1. Vitebskiy, S. and L. Carin, "Moment method modeling of short pulse scattering from and the resonances of a wire buried inside a lossy, dispersive half space," IEEE Trans. On Antennas and Propagation, Vol. 43, No. 11, 1303-1312, 1995.

2. Vitebskiy, S. and L. Carin, "Resonances of perfectly conducting wires and bodies of revolution buried in a lossy dispersive half space," IEEE Trans. On Antennas and Propagation, Vol. 44, No. 12, 1575-1583, 1996.
doi:10.1109/8.546243

3. Vtebskiy, S., L. Carin, M. Ressler, and F. Lee, "Ultra-widenand, short pulse ground penetrating radar: Theory and measurement," IEEE Trans. On Geosci. Remote Sensing, Vol. 35, No. 5, 762-772, 1997.
doi:10.1109/36.581999

4. Geng, N. and L. Carin, "Wide band electromagnetic scattering from a dielectric BOR buried in a layered lossy dispersive medium," IEEE Trans. On Antennas and Propagation, Vol. 47, No. 4, 610-619, 1999.
doi:10.1109/8.768799

5. Carin, L., N. Geng, M. Mclure, J. Sichina, and L. Nyuyen, "Ultrawide band synthetic-aperture radar for mine-field detection," IEEE AP Magazine, Vol. 41, No. 1, 18-33, 1999.

6. Mahmoud, S. F., Full wave analysis scattering of electromagnetic waves from a buried conducting disc, Record International Symposium on Electromagnetic Theory, 13-17, 2001.

7. Mahmoud, S. F., "Full wave analysis of electromagnetic wave scattering from an imperfectly conducting circular disc," J. of Electromagnetic Waves and Applications, Vol. 15, No. 7, 917-932, 2001.

8. Hussain, M. G. M., "Principles of space-time array processing for ultrawide-band impulse radar and radio communications," IEEE Trans. Vehicula Technology, Vol. 51, No. 3, 393-403.
doi:10.1109/TVT.2002.1002490

9. Hussain, M. G. M., Signal design for ultra-wideband radar and wireless communications, Proc. 3rd WSES Symposium on Mathematical Methods and Computational Techniques in Electrical Engineering 2001, No. 12, 2001.

10. Wait, J. R., Geo-Electromagnetism, Academic Press, New York, 1982.

11. Clemmow, P. C., The Plane Wave Representation of Electromagnetic Fields, Pergamon Press, New York, 1966.


© Copyright 2014 EMW Publishing. All Rights Reserved