A subspace bearing estimation method based on check indices judgment

被引：0
|
作者：
Yang L. [1 ]
Shen T. [1 ]
Qin J. [1 ]
机构：
[1] School of Equipment Engineering, Shenyang Ligong University, Shenyang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 04期
关键词：
Bearing estimation; Check indices; Covariance matrix; Judgment statistics;
D O I：
10.13465/j.cnki.jvs.2021.04.017
中图分类号：
学科分类号：
摘要：
For the instability problem of high resolution bearing estimation based on subspace, according to the accumulated number of stable estimating covariance matrix and the check indices difference of each subspace, a subspace bearing estimation method based on check indices judgment was proposed. Firstly, covariance matrix was obtained after phase compensation in time domain, the stability impact of space data on the subspace decomposition method was reduced. Then, according to the spatial spectrum check indices difference of each subspace, the judgment statistics was obtained. Lastly, the impact of background noise on final synthetic spatial spectrum was reduced via judge statistics. The results of numerical simulation and measured data show that: compared to the high resolution bearing estimation method, this method can statistically reduce the impact of space unsteady data on covariance matrix estimation, and reduce the demand of subspace decomposition method for minimum input signal-to-noise ratio by the processing of statistical judgment. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
引用
收藏
页码：114 / 119and204
相关论文
共 22 条
  • [1] AN Yanyan, LI Ying, SHI Shengguo, Et al., The direction-of-arrival estimation for wideband coherent sources using the circular acoustic vector sensor array, Journal of Nanjing University(Natural Science), 53, 4, pp. 621-628, (2017)
  • [2] IOANNIDES P, BALANIS C A., Uniform circular and rectangular arrays for adaptive beamforming applications, IEEE Antennas and Wireless Propagation Letters, 4, 1, pp. 351-354, (2005)
  • [3] JIANG Z J, ZHAO S M, CHEN Y Y, Et al., Beamforming optimization for time-modulated circular-aperture grid array with DE algorithm, IEEE Antennas and Wireless Propagation Letters, 17, 12, pp. 2434-2437, (2018)
  • [4] YAN S F., Optimal design of modal beamformers for circular arrays, The Journal of the Acoustical Society of America, 138, 4, pp. 2140-2151, (2015)
  • [5] WANG Y, YANG Y X, MA Y L, Et al., Broadband pattern synthesis for circular sensor arrays, The Journal of the Acoustical Society of America Express Letters, 136, 2, pp. 153-158, (2014)
  • [6] JACKSON B R, RAJAN S, LIAO B J, Et al., Direction of arrival estimation using directive antennas in uniform circular arrays, IEEE Transactions on Antennas and Propagation, 63, 2, pp. 736-747, (2015)
  • [7] WONG K T, MORRIS Z N, KITAVI D M, Et al., A uniform circular array of isotropic sensors that stochastically dislocate in three dimensions: the hybrid Cramér-Rao bound of direction-of-arrival estimation, The Journal of the A coustical Society of America, 146, 1, pp. 150-163, (2019)
  • [8] HAN Z R, WU M, ZHU Q X, Et al., Three-dimensional wave-domain acoustic contrast control using a circular loudspeaker array, The Journal of the Acoustical Society of America Express Letters, 145, 6, pp. 488-493, (2019)
  • [9] JEON W, KIM J H, CHUNG S Y., Effect of mutual coupling on uniform circular arrays with vector antenna elements, IEEE Antennas and Wireless Propagation Letters, 16, pp. 1703-1706, (2017)
  • [10] SUN H M, YANG L, WEI L X., The ship target detection with improved orthogonal vector spectral estimation based on signal-subspace, Radar Science and Technology, 19, 4, pp. 321-326, (2016)
123