鱼雷拖曳线列阵及其目标方位跟踪算法研究

使用拖曳线列阵可以有效提高自导鱼雷远程搜索目标的能力,而能否精确跟踪目标方位将直接影响到鱼雷的实战效果。本文首先研究了一种鱼雷用拖曳线列阵自导系统的组成原理及实现方法,然后研究了一种子空间跟踪算法,并在此基础上提出了一种自适应Root-MUSIC算法,该算法可用于对时变的信号波达方向进行实时跟踪估计。仿真计算结果验证了该算法具有很好的跟踪效果。

Towed linear array of torpedo and it's DOAs tracking algorithm

The ability of long-distance searching goals of an acoustic homing torpedo can be improved greatly by using towed linear array, and the power of DOAs tracking of the torpedo is the key factor that influences the result in a war. In this paper, a kind of torpedo towed linear array system is analyzed firstly. Then, an algorithm is studied to address the problem of adaptive estimating the subspace of the data covariance matrix. And then, with the combination of the subspace tracking algorithm with the Root-MUSIC high resolution algorithm, an adaptive Root-MUSIC algorithm is proposed to track the time-varying DOAs. Computer simulation results are provided to demonstrate the good effectiveness of the proposed algorithm.