[1] Tong Chuangming**, Hong Wei, Li Hao,. Simultaneous Extrapolation of RCS in Both Angular andFrequency Domains Based on AWE Technique* [J]. Journal of Southeast University (English Edition), 2001, 17 (2): 18-21. [doi:10.3969/j.issn.1003-7985.2001.02.005]

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Simultaneous Extrapolation of RCS in Both Angular andFrequency Domains Based on AWE Technique^*()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

17

Issue:

2001 2

Page:

18-21

Research Field:

Electromagnetic Field and Microwave Technology

Publishing date:

2001-12-30

Info

Title:

Simultaneous Extrapolation of RCS in Both Angular andFrequency Domains Based on AWE Technique^*

Author(s):

Tong Chuangming^**;  Hong Wei;  Li Hao

State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Keywords:

MOM;  AWE technique;  extrapolation;  RCS

PACS:

O441;TN011

DOI:

10.3969/j.issn.1003-7985.2001.02.005

Abstract:

The radar cross section(RCS)of a target is dependent on frequency as well as observation angle. The method of moments(MOM)in conjunction with the asymptotic waveform evaluation(AWE)technique is applied to predict the mono-static RCS of an arbitrarily shaped two-dimensional cylinder in both frequency and angular domains. The electric field integral equation(EFIE)is solved using MOM to obtain the equivalent current on the cylinder. In the AWE technique, the equivalent current at a given frequency and angle is expanded in the desired frequency and angle band in a binomial Taylor’ s series. The binomial Taylor’ s series coefficients are then matched via the Pade approximation to a rational function. Using the rational function, the current is obtained at any frequency and angle within the interesting frequency and angular range, which is in turn used to calculate RCS of the cylinder. This method for extrapolation of RCS has at least two significant advantages: one is that RCS analytical formulae are obtained and the other is it can decrease the amount of time required for modeling problems with large computational domains.

References:

[1] R.F. Harrington, Field Computation by Moment Methods, Macmillian Company, 1968
[2] Y.E. Erdemli, C.J. Reddy, and J.L. Volakis, AWE technique in frequency domain electromagnetics, Journal of Electromagnetic Waves and Applications, vol.47, no.3, pp. 359-378, 1999
[3] Y.E. Erdemli, J. Gong, C.J. Reddy, and J.L. Volakis, Fast RCS pattern fill using AWE technique, IEEE Trans. Antennas and Propagation, vol.46, no.11, pp. 1752-1753, 1998
[4] C.J. Reddy, and M.D. Deshpande, Fast RCS computation over a frequency band using method of moments in conjunction with asymptotic waveform evaluation technique, IEEE Trans. Antennas and Propagation, vol.46, no.8, pp.1229-1233, 1998
[5.] C.M. Tong, H.X. Zhou, and W. Hong, Fast RCS pattern computation based on AWE technique, Asia Pacific Conference on Electronic Communication Systems, Australia, 2000
[6.] C.H. Lutterodt, A two-dimensional analogue of Pade approximant theory, J.Phys.A, vol.22, no.7, pp.1027-1037, 1974

Memo

Memo:

* The project supported by the National Natural Science Foundation of China(69625102).
** Born in 1964, male, associate professor.

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