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.
| Original language | English |
|---|---|
| Pages (from-to) | 449-457 |
| Number of pages | 9 |
| Journal | Circuits, Systems, and Signal Processing |
| Volume | 29 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 2010 |
Keywords
- Complex-lag PWVD
- ISAR
- Multi-component signals
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