基于水下小平台的近场目标快速定位

Fast localization of near-field target using underwater small platform

为实现水下小平台对于近场目标的快速定位,研究了一种基于单矢量水听器的近场定位算法。该算法根据子空间类多维估计方法,结合二次型最值定理,将近场目标的方位角、俯仰角以及距离参数进行分离,给出了各参数估计的闭式解,避免了多维搜索过程,减少了算法的计算量。仿真表明:该算法能够准确地定位近场目标,具有较高的定位精度。该算法的参数分离过程对复杂算法在近场情况下的应用具有借鉴价值。

In order to locate near-field target by the underwater small platform,this paper studies a fast near-field localization algorithm using single vector hydrophone.This algorithm is based on eigenstructure method,and uses the theory of quadratics forms.The multi-parameter localization problem is separated into several single-parameter estimation problems,and the closed-form solution is given.This algorithm avoids the search process.The simulation results show that the near-field target can be located by this algorithm accurately.The parameter separation process of the algorithm has the reference value for the practical application of the complex algorithm in the near field conditions.