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Generating the wideband high resolution RCS data from sparse and incomplete data

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2 Author(s)
Jie Yang ; Syracuse Univ., Syracuse ; Sarkar, T.K.

In this paper we apply the Cauchy method to interpolate/extrapolate the radar cross section (RCS) data (amplitude-only data) over a frequency band. This is accomplished by approximating the amplitude-only RCS data by a ratio of two polynomials, the coefficients of which are calculated by using the total least square (TLS) implementation of a singular value decomposition (SVD) technique so as to properly estimate the dimension of the null space. By applying the Cauchy method, an electromagnetic system is represented by a set of poles and zeros in the s-plane. Once these coefficients in the numerator and the denominator polynomials in the Cauchy method are computed using the amplitude-only RCS data, the response can be interpolated/extrapolated over other frequencies of interest. Numerical examples are presented to illustrate the applicability of the Cauchy method in interpolating/extrapolating RCS data over a frequency band.

Published in:

Antennas and Propagation Society International Symposium, 2007 IEEE

Date of Conference:

9-15 June 2007