Influence of Target Polarization Scattering Characteristics on the Detection Performance of Polarization Diversity Radar

ZHANG Xinxun; ZHOU Shenghua; LIU Hongwei

doi:10.12000/JR18112

Volume 8 Issue 4

Aug. 2019

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Article Navigation > Journal of Radars > 2019 > 8(4): 510-518

Zhang Ran, Feng Dejun, Xu Letao. Design and Polarization Characteristics Analysis of Dihedral Based on Salisbury Screen[J]. Journal of Radars, 2016, 5(6): 658-665. doi: 10.12000/JR16055

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ZHANG Xinxun, ZHOU Shenghua, and LIU Hongwei. Influence of target polarization scattering characteristics on the detection performance of polarization diversity radar[J]. Journal of Radars, 2019, 8(4): 510–518. doi: 10.12000/JR18112

Zhang Ran, Feng Dejun, Xu Letao. Design and Polarization Characteristics Analysis of Dihedral Based on Salisbury Screen[J]. Journal of Radars, 2016, 5(6): 658-665. doi: 10.12000/JR16055

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Influence of Target Polarization Scattering Characteristics on the Detection Performance of Polarization Diversity Radar

DOI: 10.12000/JR18112

ZHANG Xinxun^{1,2,3
,
,},
ZHOU Shenghua^1,2,
LIU Hongwei^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
③.
Air Force Early Warning Academy, Wuhan 430019, China

Funds: The National Natural Science Foundation of China (61401329, 61372134, 61372136), The National Science Fund for Distinguished Young Scholars (61525105)

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Corresponding author: ZHANG Xinxun, zxx819@sina.com
Received Date: 2018-12-13
Rev Recd Date: 2019-01-06
Publish Date: 2019-08-28

Abstract

Abstract

This study investigates the influence of the target polarization scattering characteristics on the detection performance of Polarization Diversity Radar (PDR) system with three typical working modes: full polarization mode, mixed polarization mode, and single polarization mode. The statistical properties of target echo signal corresponding to the three modes are separately deduced based on the statistical model of target polarization scattering and the receiving voltage equations. Furthermore, the optimal polarization diversity multi-channel fusion detection algorithm is designed under the Neyman-Pearson criterion in the background of Gaussian distribution, and closed-form expressions of probability of false alarm and detection are derived. The simulation results show that the correlations between the polarization scattering components of the target, particularly the correlations between the matched and cross polarization scattering components of the target, have greater effect on the detection performance of PDR for a given system Signal-to-Noise Ratio (SNR). In addition, the detection performance of the full and single polarization modes is more robust than that of the mixed polarization mode.
- Polarization Diversity Radar (PDR),
- Target detection,
- Polarization scattering properties,
- Working mode,
- Correlation coefficient

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References

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