摘要
本文讨论了基元信号的振幅及相位起伏对AR方法阵处理器性能的影响,着重研究了均方倒声束图案及定向误差,注意到了参考基元以及基元信号起伏之间相关性的作用。结果表明,起伏一般使均方声束图案展宽以致畸变。相位起伏产生定向误差,其标准方差正比于起伏的标准方差并与基阵基元数有关,起伏之间的相关性对定向误差有重要作用。
The performance of AR high resolution array processor in presence of correlated sensor signal fluctuation is studied. Mean square inverse beam pattern and pointing error are examined. Special attention is paid to the effects of referenced sensor and correlation between sensors. It is shown that fluctuation causes broadening or even distortion of the mean square inverse beam pattern. Phase fluctuation causes pointing error. Its standard variance is proportional to that of fluctuation and is related to the number of sensors of the array. Correlation between sensors has important effects on pointing error.
出处
《声学学报》
EI
CSCD
北大核心
1990年第2期137-145,共9页
Acta Acustica
