摘要拖曳式线列阵声纳依靠其性能上的优势,已成为目前反潜战的重要装备,而低频大孔径的拖曳线列阵是现代声呐技术发展的主要方向之一。柔性的拖曳阵在水下拖动时受拖船拖动及海流等的扰动,其形状必然会发生变化,不是简单的直线。如果不考虑阵形的变化仍然假设拖曳阵是直线阵,则常用的自适应波束形成算法的性能将急剧恶化甚至失效,因此拖曳阵的阵形估计问题非常重要。本论文介绍了几种不同的阵形估计方法,如借助外部装置法,求解 Paidoussis 方程法,有源估计方法,并对其中一些方法在 MATLAB 环境下进行了阵形估计仿真实验,结果表明上述方法可以有效解决阵形估计问题。 7992
关键词 拖曳阵 阵形估计 外部装置 有源估计 求解方程 仿真 Title Research on Towed Line Array Shape Estimation Methods
Abstract
The towed line array sonar has become an important equipment in
antisubmarine warfare ,relying on its advantages .The towed line array
which has low frequency and large apertures is the main developing
direction of the modern sonar’s technology .The dynamical behavior of a
thin flexible array towed through the water is perturbed by the towing ship
and ocean flow .And its shape will change ,not simply linear .So the
estimation of the towed array’s shape is very important .This paper
introduces several different methods of estimating an array’s shape ,such
as using external devices ,solving the Paidoussis equation and active
estimation .And this paper makes some MATLAB simulations ,too . By the
comparison and introduction of different methods ,this paper highlights
the importance of the array shape's estimation .
Keywords: towed array ,array shape estimation ,external device ,active
estimation ,solving equations ,simulation
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