The multi-stage Wiener filter(MSWF)is introduced to spatial-temporal 2-D spectrum estimation to reduce the computation cost,and a fast algorthm is proposed.The fast algorithm can be used to acquire the noise subspace by simple multiplication and addition operations,which does not need to perform Eigen values decomposition on the space-time array covariance matrix,and is easier to implement in hardware.Simulation results show that the performance of the fast algo-rithm is equivalent to that of the original 2-D algorithm.
关键词
空时二维谱估计/多级维纳滤波器/快速算法
Key words
spatial-temporal 2-D estimation/multi-stage Wiener filter(MSWF)/fast algorithm
维普
万方数据