具有良好宽容性的逆波束形成干扰抑制算法研究

在阵列信号处理中，逆波束形成干扰抑制算法利用干扰的方位信息估计干扰信号从而进行干扰抑制，但在复杂海洋环境中阵列接收的干扰信号往往存在相位随机扰动，此方法估计的干扰信号与实际干扰信号有较大偏差，造成干扰抑制效果不理想。为适应干扰相位的随机扰动，具有良好宽容性的逆波束形成干扰抑制算法充分考虑随机扰动的存在，利用干扰重建矩阵估计干扰信号，此时估计干扰信号更接近实际干扰信号，保证干扰抑制有较好的结果。该文算法充分考虑了复杂海洋环境中干扰信号的相位扰动，可以获得较好的干扰抑制效果，提高了算法的宽容性。理论分析、计算机仿真结果均表明该文算法的有效性。

The Research on the Algorithm of Inverse Beamforming for Interference Suppression with Good Robust

In the array signal processing, the inverse beamforming for interference suppression algorithm uses the azimuth information of interference to estimate and suppress the interference. In the complex marine environment the phase of the interference which is received by the array has the random disturbances, there is a big deviation between the actual interference and the interference which is estimated by the algorithm, which makes the effect of the interference suppression not good. In order to adapt the random disturbances of the phase of the interference, the inverse beamforming for interference suppression algorithm with good robust takes the random disturbances into full consideration and uses the interference reconstruction matrix to estimate the interference. In this case the estimated interference is closer to the actual interference signal and the result of interference suppression is better. The proposed method takes the random disturbances of the phase of the interference into full consideration, so it shows good robust in the complex ocean environment. Both the theoretical analysis and the computer simulation results show the effectiveness of the proposed method.