Title: An Instantaneous ISAR Imaging Algorithm Based on Time-Frequency Domain Filtering
Abstract: When targets move irregularly,time-frequency analysis is needed in order to obtain instantaneous images.Time-frequency distribution characteristics of Wigner-Ville distribution(WVD) and Choi-Williams distribution(CWD) are discussed,both of which are members of the Cohen's class.Based on the idea of time-frequency domain filtering a new instantaneous frequency estimation method is proposed which possesses the high time-frequency concentration of WVD and the cross-terms reduction ability of CWD.A new instantaneous imaging algorithm is proposed and is used for maneuvering plane data processing.Imaging results validate advantage of the proposed method.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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