中国舰船研究2024，Vol.19Issue(3)：337-343,7.DOI:10.19693/j.issn.1673-3185.03319
基于旋转弹体的非理想阵列测向技术研究
Research on DOA technique of non-ideal array based on rotating projectile
摘要
Abstract
[Objective]This paper proposes an online calibration direction-of-arrival(DOA)estimation al-gorithm to solve the problem of error interference by strong clutter in the flight of a rotating missile direction-finding system.[Method]Using the prior condition of the known array-rotation angles,the maximum likeli-hood criterion-based method is used to estimate the conformal array errors and spatial-polarization parameters of the signal.[Results]The simulation experiment results show that the proposed algorithm can achieve on-line error calibration and signal parameter estimation for arrays with directione-dependent amplitude-phase in-consistency errors.Moreover,the estimation performance of the algorithm is related to the rotation times of the array platform and signal-noise ratio(SNR)ratio.When the number of rotations exceeds twenty-four,the es-timation error of the spatial domain parameters is less than one degree under the condition of low SNR(10 dB).[Conclusion]The proposed algorithm uses the idea of fractal dimension alternating processing to solve the multi-parameter estimation problem,enabling it to ensure the convergence of parameters and greatly reduce computational complexity.关键词
在线校正/阵列旋转/波达方向估计/极化敏感阵列Key words
online calibration/array rotation/direction-of-arrival estimation/polarization sensitive array分类
交通工程引用本文复制引用
赵梓君,刘鲁涛,王乐萍..基于旋转弹体的非理想阵列测向技术研究[J].中国舰船研究,2024,19(3):337-343,7.基金项目
国家自然科学基金资助项目(62071137) （62071137）
