摘要
利用高阶累积量的阵列扩展和抑制高斯噪声特性,提出1种基于四阶累积量的逆波束形成算法,并通过滑动平均进一步改善了算法。仿真结果和实验数据表明:逆波束形成算法较常规波束形成方法在空间方位分辨力和噪声抑制能力上明显提高,可以更有效地应用于被动测向声纳中。
The article proposed an inverse beamforming method based on fourth-order cumulants by using their the array extension and noise restrain characteristics and improved the algorithm performance through moving average. The simulation results and experimentale data indicate that the performance of spatial-azimuth resolution and noise restraining is improved remarkably than conventional beamforming. Thus, the algorithm can be utilized in passive direction finding sonar more effectively.
出处
《中国海洋大学学报(自然科学版)》
CAS
CSCD
北大核心
2007年第2期211-214,共4页
Periodical of Ocean University of China
关键词
被动测向声纳
四阶累积量
逆波束形成
passive direction finding sonar
fourth-order cumulants
inverse beamforming