Target feature extraction of frequency domain data with optimal rational approximation

Author

Liao, S.P. ; Fang, D.G. ; Li, X.G.

Author_Institution

Dept. of Electr. Eng., East China Inst. of Technol., Nanjing, China

fYear

1992

fDate

18-25 June 1992

Firstpage

242

Abstract

An approach to target feature extraction of frequency domain data with optimal rational approximation is presented. The full response in the frequency domain is taken into account. The function approximation theory and numerical method are used to find the feature coefficients of the target which are equivalent to the poles of the target. The feature coefficients obtained are invariant to the radar aspect angles. Numerical results show that the method is robust to noise. The method possesses the capability of determining the degree of the rational function. When the degree is incorrect, the feature coefficients obtained are quite sensitive to the aspect angles; otherwise, they are insensitive.<>

Keywords

approximation theory; feature extraction; frequency-domain analysis; optimisation; radar theory; feature coefficients; frequency domain data; function approximation theory; numerical method; optimal rational approximation; radar aspect angles; rational function degree; target feature extraction; time domain response; Data mining; Feature extraction; Frequency domain analysis; Function approximation; Polynomials; Radar cross section; Signal to noise ratio; Time factors; Transfer functions; Transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221956

Filename

221956