多线谱加权的匹配简正波处理声源定位

Multi-line spectrum weighting method of MMP for source localization

摘要: 文献[6]介绍了一种适用短垂直阵的简正波分解快速送代方法,它的最大优点和实用之处是使场匹配技术对垂直阵长度的苛刻要求变得宽容。本文模拟计算用小型快艇辐射噪声线谱作为声源,提出了多线谱加权匹配简正波处理(MMP)声源定位方法。计算表明,这种加权计算方法提高了声源定位的距离估计和深度估计的精度,使模糊平面上的主瓣增高变窄,旁瓣受到有效抑制,优于该艇线谱能量最大的100Hz单线谱的声源定位。

Abstract: A fast iterative method of mode decomposition for a short vertical array has been presented in [6]. The key advantage and practical application is to reduce the length of the vertical array. In this paper, a weighting method of MMP with the iterated mode amplitude vector, by using some linescomponent spectrum of radiated noise of a small speedboat, is proposed. The numerical simulated results of the multi-line spectrum weighting method show that the accuracy of source range and depth estimators are raised, and the sidelobes are effectively suppressed. It is excellent to one-line spectrum localization with the highest level of 100Hi of this speedboat.