单水听器被动测距的信赖域最优化方法

摘要

In order to solve the problem of single hydrophone passive ranging,a method of Doppler passive ranging based on trust region optimization method was proposed. Compared with the existing method that has to detect the time and frequency when the target arrives to the course shortcut,the new method can detect the target in real-time detecting before it arrives to the course shortcut. This approach can obtain not only the kinetic parameters but also the current and predicted distances of the target. It makes full use of the target's Doppler information,and realizes real-time ranging for moving target by single hydrophone. It can also be suitable for the uniformly accelerated target model and has better practice value. Simulation results show its correctness.%为了解决单水听器被动测距的问题,提出了一种基于信赖域最优化方法的多普勒被动测距法.与必须检测到达航路捷径点时间和频率的多普勒最接近法相比,该方法可以在航路捷径点之前对目标实现实时探测,不仅能实时给出目标运动参数,而且还能直接获得目标当前距离及预测目标距离,不再是仅仅得到航路捷径距离,充分利用目标多普勒信息,实现了单水听器对运动目标的实时测距.该方法还适用于目标匀加速模型,因而具有更好的实用价值.仿真结果表明了新方法的正确性.