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Journal of Zhejiang University SCIENCE C 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/FITEE.2100003


Target height and multipath attenuation joint estimation with complex scenarios for VHF radar


Author(s):  Sheng CHEN, Yongbo ZHAO, Yili HU, Chenghu CAO, Xiaojiao PANG

Affiliation(s):  National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China

Corresponding email(s):   ybzhao@xidian.edu.cn

Key Words:  Low-angle estimation, VHF radar, complex scenarios, multipath effect, Height estimation


Sheng CHEN, Yongbo ZHAO, Yili HU, Chenghu CAO, Xiaojiao PANG. Target height and multipath attenuation joint estimation with complex scenarios for VHF radar[J]. Frontiers of Information Technology & Electronic Engineering, 1998, -1(-1): .

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author="Sheng CHEN, Yongbo ZHAO, Yili HU, Chenghu CAO, Xiaojiao PANG",
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year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.2100003"
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%T Target height and multipath attenuation joint estimation with complex scenarios for VHF radar
%A Sheng CHEN
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%A Yili HU
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%J Journal of Zhejiang University SCIENCE C
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%I Zhejiang University Press & Springer
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T1 - Target height and multipath attenuation joint estimation with complex scenarios for VHF radar
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A1 - Xiaojiao PANG
J0 - Journal of Zhejiang University Science C
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/FITEE.2100003


Abstract: 
low-angle estimation for very high-frequency (VHF) radar is one of the difficult problems due to the multipath effect in the radar field, especially in complex scenarios where the reflection condition is unknown. To deal with this problem, an algorithm of target height and multipath attenuation joint estimation is proposed. The amplitude of the surface reflection coefficient is estimat-ed by the characteristic of the data itself, and it is assumed that there is no reflected signal when the amplitude is very small. The phase of the surface reflection coefficient and the phase-difference between the direct signal and reflected signal are searched as the same part, and this represents the multipath phase attenuation. The Cramer-Rao bound of the proposed algorithm is also derived. Finally, computer simulations and real data processing results show that the proposed algorithm has good estimation performance under complex scenarios, and the proposed algorithm works well with only one snapshot.

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