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

Deng  Dong-hu; Zhang   Qun; Luo   Ying; Li   Song; Zhu  Ren-Fei

doi:10.3724/SP.J.1300.2013.13039

Volume 2 Issue 2

Jun. 2013

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Article Navigation > Journal of Radars > 2013 > 2(2): 152-167

YAO Zhixin and XIAO Shaoqiu. Wide-angle, ultra-wideband, and polarization-insensitive circuit analog absorbers[J]. Journal of Radars, 2021, 10(2): 274–280. doi: 10.12000/JR21017

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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

YAO Zhixin and XIAO Shaoqiu. Wide-angle, ultra-wideband, and polarization-insensitive circuit analog absorbers[J]. Journal of Radars, 2021, 10(2): 274–280. doi: 10.12000/JR21017

Citation:

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

DOI: 10.3724/SP.J.1300.2013.13039

1.
(Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, China)
2.
(Institute of Air and Missile Defense, Air Force Engineering University, Xi’an 710051, China)

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

Abstract

Abstract

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.
- Bi-static radar,
- Inverse Synthetic Aperture Radar (ISAR),
- Resolution,
- Micro-Doppler effect,
- Hough transform

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