Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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By A. Alexopoulos

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We consider how an electromagnetic field propagating to a target alters the radar cross section of the target relative to an observer. We derive the optimum high-frequency path for the fields using the calculus of variations and by using a realistic refractive index profile for the atmosphere obtain closed form solutions. It is found that the predicted nulls and peaks in the radar cross section of a scattering object relative to an observer are shifted from those normally expected from just the isolated object. Hence, for predictive purposes at least, radar cross section results need to incorporate the effects of atmospheric propagation.

A. Alexopoulos, "Effect of atmospheric propagation in RCS predictions," Progress In Electromagnetics Research, Vol. 101, 277-290, 2010.

1. Ruck, G. T., D. E. Barrick, W. D. Stuart, and C. K. Krichbaum, Radar Cross Section Handbook, Vol. 1--2, Plenum Press, 1970.

2. Knott, E. F., J. F. Shaeffer, and M. T. Tuley, Radar Cross Section, Artech House, Norwood, 1985.

3. Stratton, J. A., Electromagnetic Theory, McGraw-Hill, New York and London, 1941.

4. Gelfand, I. M. and S. V. Fomin, Calculus of Variations, (Translated and edited by Silverman, R. A.), Dover Edition, 2000.

5. Ewing, G. M., Calculus of Variations with Applications, Dover, New York, 1985.

6. Bolza, O., Lectures on the Calculus of Variations, Dover, New York, 1961.

7. Forsyth, A. R., Calculus of Variations, Dover, New York, 1960.

8. Ng, K. H., E. K. Tameh, and A. R. Nix, "A new hybrid geometrical optics and radiance based scattering model for ray tracing applications," IEEE Int. Conf. Comm., 2168-2172, 2005.

9. Rawlinson, N., J. Hauser, and M. Sambridge, "Seismic ray tracing and wavefront tracking in laterally heterogeneous media," Advan. in Geophys., Vol. 49, 203-267, 2007.

10. Cocheril, Y. and R. Vauzelle, "A new ray-tracing based wave propagation model including rough surfaces scattering," Progress In Electromagnetics Research, Vol. 75, 357-381, 2007.

11. Maystre, D., "Electromagnetic scattering by a set of objects: An integral method based on scattering operator," Progress In Electromagnetics Research, Vol. 57, 55-84, 2006.

12. Deschamps, G. A., Ray techniques in electromagnetics, Proc. IEEE, Vol. 60, No. 9, 1022-1035, 1972.

13. Alexopoulos, A., Resonance effects in electromagnetic propagation using a modified J. W. K. B. approach, IEEE Proc. Rad. 06, 288-295, 2006.

14. Schelling, J. C., C. R. Burrows, and E. B. Ferrell, Ultra-short wave propagation, Proc. of IRE, Vol. 21, No. 5, 427-463, 1933.

15. Blake, L. V., Radar-performance and Analysis, Artech-House, 1986.

16. Bean, B. R. and G. D. Thayer, Models of the atmospheric radio refractive index, Proc. of IRE, Vol. 47, No. 5, 740-755, 1959.

17. Alexopoulos, A., "Asymptotic solutions to multidimensional rapidly-oscillating integrals," Electron. Lett., Vol. 44, No. 10, 610-612, 2008.

18. Akhmanov, A. and S. Y. Nikita, Physical Optics, Oxford University Press, 1997.

19. Asvestos, J. S., "The physical optics method in electromagnetic scattering," J. Math. Phys., Vol. 21, No. 2, 290-299, 1980.

20. Umul, Y. Z., "Modified theory of physical optics," Optics Express, Vol. 12, No. 80, 4959-4972, 2004.

21. Gordon, W. B., "High-frequency approximations to the physical optics scattering integral," IEEE Trans. Antennas Propag., Vol. 42, No. 3, 427-432, 1994.

22. Anderson, W. C., The radar cross section of perfectly-conducting rectangular flat plates and rectangular cylinders --- A comparison of physical optics, GTD and UTD solutions, DSTO Report ERL-0344-TR, 1985.

23. Balanis, C. A., Advanced Engineering Electromagnetics, Wiley, 1989.

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