电波科学学报2025，Vol.40Issue(5)：864-871,8.DOI:10.12265/j.cjors.2024167
基于FastICA的DOA估计和幅相误差校正算法
Direction-of-arrival estimation and gain-phase error calibration based on FastICA
摘要
Abstract
In this paper,a new method of direction of arrival(DOA)estimation and gain-phase error calibration based on FastICA is proposed to address the issue of performance deterioration in traditional high-resolution DOA estimation algorithms caused by gain-phase error.This method decomposes the gain-phase error into gain error and phase error,and estimates them separately.Our method utilizes the characteristics of the diagonal elements of the covariance matrix to estimate the gain error.The mixing matrix,composed of the array manifold matrix and gain-phase error matrix,is extracted from the snapshot samples using the FastICA algorithm.The mixing matrix is then projected onto the signal subspace to eliminate spurious signals and obtain the true steering vector.The algorithm utilizes the true steering vector to construct an oblique projection operator to acquire the single-component received data.The DOA estimation is obtained through subspace orthogonality spectral search,and the phase error is estimated based on it.The algorithm in this paper can maintain good performance in phase error large scenarios for both gain error estimation and DOA estimation.The correction process does not require the setting of additional auxiliary signal sources and avoids the issue of suboptimal convergence that occurs in the Weiss-Friedlander(WF)method.Numerical simulations validate the effectiveness of the proposed method.关键词
幅相误差校正/波达方向(DOA)估计/快速独立成分分析算法(FastICA)/斜投影/多重信号分类(MUSIC)Key words
gain-phase error calibration/DOA estimation/FastICA/oblique projection/multiple signal classification(MUSIC)分类
电子信息工程引用本文复制引用
李明荃,刘帅,闫锋刚,金铭..基于FastICA的DOA估计和幅相误差校正算法[J].电波科学学报,2025,40(5):864-871,8.基金项目
国家自然科学基金面上项目(62071144,62171150) （62071144,62171150）
泰山学者工程专项经费(tsqn202211087) （tsqn202211087）
