Robust Beamforming of Polarization Array Based on an Improved General Linear Combination Algorithm

被引:0
|
作者
Lü Y. [1 ,2 ]
Cao F. [1 ]
Yang J. [3 ]
Feng X. [1 ]
He C. [1 ]
机构
[1] Nuclear Engineering College, Rocket Force University of Engineering, Shannxi, Xi’an
[2] Unit 96746 of PLA, Kuerle, Xinjiang
[3] Missile Engineering College, Rocket Force University of Engineering, Shannxi, Xi’an
关键词
diagonal loading; general linear combination; polarization array; robust beamforming;
D O I
10.15918/j.tbit1001-0645.2021.362
中图分类号
学科分类号
摘要
To improve the robustness of beamforming for polarization array, a general linear combination (GLC) algorithm was applied to the polarization array in this paper. Firstly, analyzing the reason of output signal to interference plus noise ratio decrease with the increase of the number of snapshots under the conditions of sensor disturbance and direction of arrival (DOA) mismatch of the signal of interest (SOI) at high input signal to noise ratio,an improved GLC algorithm was proposed. And then, the input signal to noise ratio was identified by the proposed algorithm according to the size of parameters related to the eigenvalues of the sample covariance matrix (SCM). At high input signal to noise ratio, the GLC algorithm combined with the conversion function was used to calculate the diagonal loading level (DLL). And at a low level of the input signal to noise ratio, the original GLC algorithm was used to calculate the DLL, making the output signal to interference plus noise ratio of the improved GLC algorithm be greater than or equal to that of the original GLC algorithm under any input signal to noise ratio and snapshot. Finally, the effectiveness of the proposed algorithm was verified by simulations under the condition of mainlobe interference. © 2022 Beijing Institute of Technology. All rights reserved.
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页码:1305 / 1311
页数:6
相关论文
共 19 条
  • [1] HE B, SU H, HUANG J., Joint beamforming and power allocation between a multistatic MIMO radar network and multiple targets using game theoretic analysis, Digital Signal Processing, 115, 5, (2021)
  • [2] WANG Bo, XIE Junwei, ZHANG Jing, Et al., Adaptive beamforming of CSB sin-FDA based on RCB algorithm, Transactions of Beijing Institute of Technology, 40, 1, pp. 53-61, (2020)
  • [3] LUO Xue, DOA estimation based on unknown mutual coupling model, Transactions of Beijing Institute of Technology, 41, 12, pp. 1286-1292, (2021)
  • [4] CHEN H, SHAO H, CHEN H Y., Angle range polarization dependent beamforming for polarization sensitive frequency diverse array[J], EURASIP Journal on Advances in Signal Processing, 1, pp. 1-14, (2019)
  • [5] FOHLMEISTER F, ILIOPOULOS A, SGAMMINI M, Et al., Dual polarization beamforming algorithm for multipath mitigation in GNSS[J], Signal Processing, 138, C, pp. 86-97, (2017)
  • [6] MA Huihui, TAO Haihong, Joint DOA and polarization parameter estimation of COLD sensors based on resampling technique, Transactions of Beijing Institute of Technology, 40, 11, pp. 1216-1222, (2020)
  • [7] DU L, LI J, STOICA P., Fully automatic computation of diagonal loading levels for robust adaptive beamforming[J], IEEE Transactions on Aerospace and Electronic Systems, 46, 1, pp. 449-458, (2010)
  • [8] WANG J, YANG G, YI H U, Et al., A two-stage nonlinear shrinkage of the sample covariance matrix for robust capon beamforming[J], Chinese Journal of Electronics, 28, 5, pp. 962-967, (2019)
  • [9] KE Y, ZHENG C, PENG R, Et al., Robust adaptive beamforming using noise reduction preprocessing-based fully automatic diagonal and steering vector estimation[J], IEEE Access, 5, pp. 12974-12987, (2017)
  • [10] GAN L, YI Z., Automatic computation of diagonal loading factor for robust adaptive beamforming based on Gaussian distribution[J], AEU-International Journal of Electronics and Communications, 67, 7, pp. 570-573, (2013)