一般阵列误差情况下空时谱分析的研究

摘要

本文研究了一般阵列误差情况下的空时二维鲁棒参数估计方法。首先本文给出了一般阵列误差模型，然后基于该模型提出了空时加权子空间拟合(ST-WSF)算法，并给出了信号参数，即信号波达方向和频率的估计的Cramer-Rao下界。仿真结果进一步验证了算法的有效性。%The robust spatio-temporal signal parameter estimation is studied in this paper in the case of general array errors. First a general array error model is given. Then a spatio-temporal weighted subspace fitting (ST-WSF) method is proposed on the basis of the given model. And the Cramer-Rao lower bounds on signal parameters,i. e. directions of arrival and carrier frequencies are derived. Numerical experiments further verifies the effectiveness of the algorithm.