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研究了极化域-空域联合谱的动态更新问题,给出了MUSIC联合谱的自 适应递推估计算法。利用指数窗法对阵列协方差矩阵作秩 1更新;然后在矩阵扰动 理论基础上,利用矩阵特征分解二阶修正方法更新特征值和特征向量;针对最小特征 值重合情形仅对信号子空间进行递推更新,根据更新了的信号子空间得到动态联合 谱;最后仿真结果验证了该方法的可靠性。
The dynamic update of polarization domain-space domain joint spectrum is studied. An adaptive recursive estimation algorithm of MUSIC joint spectrum is given. Then, based on the matrix perturbation theory, the eigenvalues and eigenvectors are updated by using the matrix eigenvalue decomposition second-order correction method. For the eigenvalue coincidence case, only the signal subspace is delivered Push update, the dynamic joint spectrum is obtained according to the updated signal subspace. Finally, the simulation results verify the reliability of the proposed method.