实数域中的投影法及其在单次快摄阵处理中的应用

PROJECTION METHOD WITH APPLICATIONTO ARRAY PROCESSINGOFSINGLESNAPSHOTIN REALREGION

阵列处理中计算简单的投影法避免了矩阵特征分解（ＥＶＤ）的庞大计算量，然而仍需进行复数计算。为了进一步减小计算量，提出一种实数域中的投影法，它将投影矩阵及空间谱的计算均简化为实数的计算，从而。使阵处理的计算量大大减少，而且使估计性能保持不变。计算机模拟与实际外场实验数据的计算结果表明了算法的有效性。

Computationally simple projection methods are proposed to avoid a lot of computa-tions of eigenvalue decomposition (EVD)in array proeessing.However,the complex computa-tions are still needed in projection methods.To reduee computations further,a projection method in real region is presented.The computations of the proposed method are redueed greatly,be-cause the real computations are used in the proposed method instead of the corresponding com-plex computations Also the perfonnance of the complex projection method is kept.Computer simulation and practical experiment results show the effectiveness of the proposed method.