炸点定位系统定向精度研究

Directional Precision Study of Bomb Point Positioning System

探讨了几种无源炸点定位的方法,以获取炸点三维空间坐标信息.为了进一步提高定位精度,研究了基于多基阵概率密度的三基阵联合定位方法,使其探测距离达到上千米.该方法的定位方式根据单个基阵所测量的位置信息,计算目标位置在整个空间的概率分布最大点,把它作为目标的位置.就炸点角度、各个基阵的底面半径及立杆高度等因素对方位角和俯仰角误差的影响进行了仿真.仿真结果表明:这种方法定位精度较高,角度误差小于1°,可实现空间区域内的声源综合定位,优于传统的定位方式,构造简单,可用于实际工程中.

Several approaches of passive bomb point positioning is discussed to get the three-dimensional space coordinate information.In order to improve the positional accuracy,the method of three arrays joint positioning is studied whitch is based on multi-arrays probability density localization,so that the detection range can reach to over one thousand meters.The location mode of this approach calculate the largest probability distribution point of the target position in the whole space according to the position information measured by each single array,treating it as the target position.The simulation is carried out which is based on the effect of the error in azimuth and elevation angle caused by factors like bomb point angle,the bottom radius and the height of array.The results show that the approach have many advantages such as high location precision,one degree lower angle error,ability of united sound localization in space area,better location approach than traditional one,simple construction and practical engineering.