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Correction of Ionospheric Effects on DOA-polarization Estimation of Spatial Signal
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Jialin SUN1, Li CAI2, Ran XIONG3, Shengjie LYU4, Mengkui ZHAO5, Huotao GAO1
Telecommunication Engineering | 2025, 65(11) : 1894 - 1902
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Telecommunication Engineering | 2025, 65(11): 1894-1902
• Electronics and Information Engineering •
Correction of Ionospheric Effects on DOA-polarization Estimation of Spatial Signal
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Jialin SUN1, Li CAI2, Ran XIONG3, Shengjie LYU4, Mengkui ZHAO5, Huotao GAO1
Affiliations
  • 1School of Electronic Information，Wuhan University，Wuhan 430072，China
  • 2School of Electronical Engineering and Automation，Wuhan University，Wuhan 430072，China
  • 3Unit 32382 of PLA,Wuhan 430311,China
  • 4Station 2021 of National Radio and Television Administration，Qiqihar 161006，China
  • 5Mingfei Weiye Technology Co., Ltd., Wuhan 430070, China
Published: 2025-11-28 doi: 10.20079/j.issn.1001-893x.240410001
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In satellite-to-ground communication,during the process of P-band signal crossing the atmosphere to reach the ground array,its direction of arrival(DOA) and polarization angle are changed by ionosphere effects. Therefore,there is an error between the estimated values obtained by the existing DOA-polarization estimation algorithm and the real values. In order to solve the problem,corrections are made from the aspects of DOA and polarization angle. Firstly, considering the ionospheric refraction effect, a signal propagation model of ionosphere is established,based on which a correction method for pitch angle error is proposed. Secondly,regarding the Faraday rotation(FR) effect of ionosphere,the influence of Faraday rotation angle (FRA) on signal polarization is analyzed,and two estimation methods of FRA based on scattering matrix are proposed according to the process of ground target scattering. Simulation results demonstrate that the proposed methods can accurately calculate the correction value of pitch angle and FRA of P-band signal. Under certain conditions,the pitch angle estimation accuracy is improved by about 0.1°,and the FRA estimation accuracy is improved by nearly 1°,so the correction of DOA and polarization angle is realized.

satellite-to-ground communication  /  P-band signal  /  ionospheric effect  /  DOA correction  /  pitch angle correction  /  FRA estimation
Jialin SUN, Li CAI, Ran XIONG, Shengjie LYU, Mengkui ZHAO, Huotao GAO. Correction of Ionospheric Effects on DOA-polarization Estimation of Spatial Signal[J]. Telecommunication Engineering, 2025 , 65 (11) : 1894 -1902 . DOI: 10.20079/j.issn.1001-893x.240410001
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Year 2025 volume 65 Issue 11
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doi: 10.20079/j.issn.1001-893x.240410001
  • Receive Date：2024-04-10
  • Online Date：2026-04-15
  • Published：2025-11-28
Article Data
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History
  • Received：2024-04-10
  • Revised：2024-06-11
Affiliations
    1School of Electronic Information，Wuhan University，Wuhan 430072，China
    2School of Electronical Engineering and Automation，Wuhan University，Wuhan 430072，China
    3Unit 32382 of PLA,Wuhan 430311,China
    4Station 2021 of National Radio and Television Administration，Qiqihar 161006，China
    5Mingfei Weiye Technology Co., Ltd., Wuhan 430070, China
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