一种冲击噪声中波达方向估计的有效算法

基于空间平滑技术和矩阵重构技术，提出了一种相干信源下波达方向估计的新算法。算法在非高斯冲击噪声下，能对波达方向进行有效地估计。与基于分数低阶矩算法以及基于分数低阶矩平滑算法相比较，新算法能在信噪比为-5dB时，提高40％的成功估计概率。信噪比为0dB-10dB时，成功概率大约提高20％，且均方根误差被降低近20％-50％。计算机仿真结果验证了算法的有效性。

An Efficient Algorithm of Direction of Arrival Estimation in Impulsive Noise Environment

In this paper, we propose a new algorithm for estimating the arrival angles of coherence signals in terms of the forward-backward spatial smoothing technique and matrix remodeling method. The proposed algorithm can efficiently estimate the arrival angles of signals in the non-Gaussian impulsive noise environment. Compared with the known ones based on the fractional lower order moment or the smoothed fractional lower order moment, the probability of successful estimation is increased by forty percentages under signal-to-noise rate with negative five ctB. The probability of successful estimation enhanced about twenty percentages, when the signal-to-noise rate is from zero dB to ten dB, and the RMS is reduced by twenty percentages to fifty percentages. The computer simulation results show that the proposed algorithm is feasible.