Volume 2 Issue 2
Jun.  2013
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Article Contents
Deng Dong-hu, Zhang Qun, Luo Ying, Li Song, Zhu Ren-Fei. Resolution and Micro-Doppler Effect in Bi-ISAR System (in English)[J]. Journal of Radars, 2013, 2(2): 152-167. doi: 10.3724/SP.J.1300.2013.13039
Citation: Deng Dong-hu, Zhang Qun, Luo Ying, Li Song, Zhu Ren-Fei. Resolution and Micro-Doppler Effect in Bi-ISAR System (in English)[J]. Journal of Radars, 2013, 2(2): 152-167. doi: 10.3724/SP.J.1300.2013.13039

Resolution and Micro-Doppler Effect in Bi-ISAR System (in English)

doi: 10.3724/SP.J.1300.2013.13039
Funds:

Supported by the National Natural Science Foundation of China (No. 61172169), and the National Natural Science Foundation for Young Scientist of China (No. 61201369, 61102109).

  • Received Date: 2013-04-07
  • Rev Recd Date: 2013-06-06
  • Publish Date: 2013-04-28
  • Compared to the monostatic radar, bistatic radar has many special characteristics because of its spatial complexity. Bistatic Inverse Synthetic Aperture Radar (Bi-ISAR) can be employed as a radar imaging tool for obtaining non-cooperative target images. In this study, we first analyze the range and azimuth resolution of a Bi-ISAR system. To analyze this azimuth resolution and its spatial-variety characteristic, a definition called con-Doppler bandwidth is introduced, which helps overcome the difficulty of the targets viewing angle diversity calculation. Then, a detailed investigation is conducted to study the micro-Doppler effect caused by the vibration and the rotation of the target in the Bi-ISAR system. By comparing the difference in the micro-Doppler effect between the Bi-ISAR system and the Mono-ISAR system, we modify the extended Hough transform to extract the real micro-motion features of the targets. Finally, we provide some simulation results to validate the theoretical derivation and to illustrate the effectiveness of the proposed method.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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