Affiliations: Department of Systems and Naval Mechatronic Engineering, National Cheng-Kung University, Tainan, Taiwan
Correspondence:
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Corresponding author: Kun-Chou Lee, Department of Systems and Naval Mechatronic Engineering, National Cheng-Kung University, Tainan, 701, Taiwan. Tel.: +886 910426536; Fax: +886 6 2747019; E-mail:[email protected]
Abstract: In this paper, the radar target recognition is given by
polarization-diversity RCS (radar cross section) including random effects.
The polarization-diversity technique means that the RCS is collected by
changing polarizations of transmitting and receiving antennas. The goal is
to identify the similarity between the unknown and known targets. To
increase discrimination and reducing random fluctuating components,
collected polarization-diversity RCS data are processed by PCA (principal
component analysis) technique prior to identification. Physically,
polarizations of electromagnetic waves can access much information of
targets. With the use of polarization-diversity RCS technique, it is not
necessary to collecting RCS in many angular directions (i.e., angular
diversity), or at many frequencies (i.e., frequency diversity). Therefore,
this technique is especially suitable for situations which have limitations
on positions or frequencies. Numerical simulation results show that the
proposed polarization-diversity target recognition scheme is very accurate
in identifying targets. In addition, it has good ability to tolerate random
fluctuating components. Compared with angular-diversity and
frequency-diversity target recognition techniques, the
polarization-diversity technique in this study requires less size of RCS
databases so that computer resources are saved.
