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The Periodicity of the Scattering Matrix and Its Application
Jian YANG Ying-Ning PENG Yoshio YAMAGUCHI Hiroyoshi YAMADA Wolfgang-M. BOERNER
IEICE TRANSACTIONS on Communications
Publication Date: 2002/02/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
radar polarimetry, scattering matrix, invariance, target,
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The periodicity of a target scattering matrix is studied when the target is rotated about the sight line of a monostatic radar. Except for the periodicity and invariance of the scattering matrix diag(a,a), it is proved that only helixes have the quasi-invariance, and that only N-targets have the quasi-periodicity, demonstrating that a target with some angle rotation symmetry also has the scattering matrix form diag(a,a). From this result, we conclude that it is impossible to extract the shape characteristics of a complex target from its scattering matrix or its Kennaugh matrix.