Micro-motion and Geometric Parameters Estimation of Wide-band Radar Cone-shaped Targets Based on Phase-derived Range

Jiaqi WEI; Lei ZHANG; Hongwei LIU; Yejian ZHOU

doi:10.11999/JEIT171233

Volume 40 Issue 9

Aug. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(9): 2227-2234

Jiaqi WEI, Lei ZHANG, Hongwei LIU, Yejian ZHOU. Micro-motion and Geometric Parameters Estimation of Wide-band Radar Cone-shaped Targets Based on Phase-derived Range[J]. Journal of Electronics & Information Technology, 2018, 40(9): 2227-2234. doi: 10.11999/JEIT171233

Citation:

Jiaqi WEI, Lei ZHANG, Hongwei LIU, Yejian ZHOU. Micro-motion and Geometric Parameters Estimation of Wide-band Radar Cone-shaped Targets Based on Phase-derived Range[J]. Journal of Electronics & Information Technology, 2018, 40(9): 2227-2234. doi: 10.11999/JEIT171233

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Micro-motion and Geometric Parameters Estimation of Wide-band Radar Cone-shaped Targets Based on Phase-derived Range

doi: 10.11999/JEIT171233

Jiaqi WEI¹,
Lei ZHANG^{1, 2
,
,},
Hongwei LIU^{1, 2},
Yejian ZHOU^{1, 2}

1.
National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China
2.
Collaborative Innovation Center of Information Sensing and Understanding at Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61771372, 61771367)

Received Date: 2017-12-28
Rev Recd Date: 2018-05-18

Available Online: 2018-07-12

Publish Date: 2018-09-01

Abstract

Abstract

The traditional method used to extract micro-motion is based on the envelope information of the wideband echo range profile, the estimation accuracy of the traditional method is unsatisfactory. To deal with this problem, a new method for parameter estimation of micro-motion feature is proposed, which is implemented by combining envelope information and phase information of the wideband echo range profile. Firstly, the Keystone transform is performed to each segment obtained by segmenting the envelope of the echo range profile to estimate micro-motion coarsely. Then, the echo phase information is extracted according to the coarse estimation results. The accurate micro-motion curve of each scattering point can be obtained by the principle of phase-derived range. Finally, the estimation of the micro-motion and geometric parameters of the precession target is completed by utilizing the extracted micro-motion curve. Compared with the traditional method, the proposed algorithm can improve the precision of parameter estimation effectively. The effectiveness and stability of the proposed algorithm is verified by simulation experiments.
- Wideband signal processing,
- Phase-derived range,
- Micro-motion feature extraction,
- Parameter estimation

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References(17)

References

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