## Multistatic Passive Radar Imaging Using The Smoothed Pseudo Wigner-Ville Distribution (2001)

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Venue: | in Proc. IEEE Intl. Conf. on Image Processing |

Citations: | 3 - 0 self |

### BibTeX

@INPROCEEDINGS{Wu01multistaticpassive,

author = {Yong Wu and David C. Munson and Jr.},

title = {Multistatic Passive Radar Imaging Using The Smoothed Pseudo Wigner-Ville Distribution},

booktitle = {in Proc. IEEE Intl. Conf. on Image Processing},

year = {2001},

pages = {604--7}

}

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### Abstract

We investigate passive radar imaging of aircraft using reflected TV signals. We apply a Smoothed Pseudo WignerVille Distribution (SPWVD)-based SAR imaging algorithm to two different scenarios. In the first simulation, multistatic VHF-band dataset generated by Fast Illinois Solver Code (FISC) is used. In the second simulation, a more realistic simulated passive radar dataset is used. A set of instantaneous images are produced by our algorithm, which have higher resolution and show more detail and features of the aircraft than can be obtained by Direct Fourier Reconstruction (DFR). The set of images provides visually more information about the target and helps to estimate its shape and features. This study suggests that the SPWVD-based imaging might be useful in passive radar imaging and target classification. 1.

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Citation Context ... for an aircraft scatteringcenter model, suggesting that DFR applied to wide-angle data could degrade image quality. To solve this problem, we have considered using the Wigner-Ville distribution(WVD) =-=[9, 10]-=- in the cross-range direction to replace the inverse Fourier transform. The crossterms can be suppressed by using the SPWVD. We can model an aircraft using a scattering-center model with aspect depend... |

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Citation Context ... for an aircraft scatteringcenter model, suggesting that DFR applied to wide-angle data could degrade image quality. To solve this problem, we have considered using the Wigner-Ville distribution(WVD) =-=[9, 10]-=- in the cross-range direction to replace the inverse Fourier transform. The crossterms can be suppressed by using the SPWVD. We can model an aircraft using a scattering-center model with aspect depend... |

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Citation Context ...sults of our previous work on SPWVD-based SAR imaging [5]. In DFR processing, polar format data is interpolated to a rectangular grid and an inverse Fourier transform is used to reconstruct the image =-=[7, 8]. Consider two point -=-targets at (x0, y0) and (x1, y1). If the two points’ brightnesses vary with aspect, the reflectivity becomes f(x, y, θ) = δ(x − x0, y − y0)e − (θ−θ 0 )2 c 0 + δ(x − x1, y − y1)e −... |

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Citation Context ...he receiver collects radio or TV signals reflected off the target. As the plane flies by, multiple broadcasting stations can provide data with frequency and angular diversity for image reconstruction =-=[1, 2, 6]-=-. The bistatic frequency coverage is lower than for a conventional X-band SAR. Thus the image resolution is potentially quite low. If narrow-angle data is used, the cross-range resolution may be so po... |

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Citation Context ...sults of our previous work on SPWVD-based SAR imaging [5]. In DFR processing, polar format data is interpolated to a rectangular grid and an inverse Fourier transform is used to reconstruct the image =-=[7, 8]. Consider two point -=-targets at (x0, y0) and (x1, y1). If the two points’ brightnesses vary with aspect, the reflectivity becomes f(x, y, θ) = δ(x − x0, y − y0)e − (θ−θ 0 )2 c 0 + δ(x − x1, y − y1)e −... |

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Citation Context ... Within a wide-angle observation aperture, the reflectivity may change with aspect dramatically. We have shown that Direct Fourier Reconstruction (DFR) in aspectdependent imaging gives blurred images =-=[5]-=- . We proposed This work is supported by DARPA under the contract number F4962098-1-0498 an imaging algorithm using the Smoothed Pseudo WignerVille distribution (SPWVD) and showed analytically that it... |

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Citation Context ...he receiver collects radio or TV signals reflected off the target. As the plane flies by, multiple broadcasting stations can provide data with frequency and angular diversity for image reconstruction =-=[1, 2, 6]-=-. The bistatic frequency coverage is lower than for a conventional X-band SAR. Thus the image resolution is potentially quite low. If narrow-angle data is used, the cross-range resolution may be so po... |

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Citation Context ...e so poor that the reconstructed image is unrecognizable. Thus wide-angle data is needed to achieve acceptable cross-range resolution. This raises the issue of aspect-dependent scattering of aircraft =-=[3, 4]-=-. Within a wide-angle observation aperture, the reflectivity may change with aspect dramatically. We have shown that Direct Fourier Reconstruction (DFR) in aspectdependent imaging gives blurred images... |

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Citation Context ...e so poor that the reconstructed image is unrecognizable. Thus wide-angle data is needed to achieve acceptable cross-range resolution. This raises the issue of aspect-dependent scattering of aircraft =-=[3, 4]-=-. Within a wide-angle observation aperture, the reflectivity may change with aspect dramatically. We have shown that Direct Fourier Reconstruction (DFR) in aspectdependent imaging gives blurred images... |

2 |
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(Show Context)
Citation Context ...he receiver collects radio or TV signals reflected off the target. As the plane flies by, multiple broadcasting stations can provide data with frequency and angular diversity for image reconstruction =-=[1, 2, 6]-=-. The bistatic frequency coverage is lower than for a conventional X-band SAR. Thus the image resolution is potentially quite low. If narrow-angle data is used, the cross-range resolution may be so po... |