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Fourth-Order Complex-Lag PWVD for Multicomponent Signals with Application in ISAR Imaging of Maneuvering Targets

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Abstract

The fourth-order complex-lag polynomial Wigner–Ville distribution (PWVD) is extended to generate a high resolution time–frequency distribution for multicomponent signals in this paper. For signals with polynomial phase up to order four, the interferences between different components are reduced by the convolution in the frequency domain of the complex-lag PWVD. The complex-lag PWVD can achieve optimal energy concentration, and it is used in the inverse synthetic aperture radar (ISAR) imaging of maneuvering targets, where high quality instantaneous ISAR images are obtained. Simulated results demonstrate the effectiveness of the method.

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Authors and Affiliations

  1. Research Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin, China

    Yong Wang & Yicheng Jiang

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  1. Yong Wang
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  2. Yicheng Jiang
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Correspondence to Yong Wang.

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Wang, Y., Jiang, Y. Fourth-Order Complex-Lag PWVD for Multicomponent Signals with Application in ISAR Imaging of Maneuvering Targets. Circuits Syst Signal Process 29, 449–457 (2010). https://doi.org/10.1007/s00034-010-9154-z

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  • DOI: https://doi.org/10.1007/s00034-010-9154-z

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