Analysis on Error Distribution of Torpedo Water-Entry Point Based on Four-Element Array Localization Algorithm
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摘要: 鱼雷入水点精度是评定鱼雷性能的主要战技指标之一。文中首先推导了基于四元阵定位鱼雷入水点算法, 并进行了仿真验证。在此基础上, 针对由于时延差估计导致的定位误差进行了分析, 推导了其误差方程, 给出了误差较大部分的主要成因。最后对不同阵形的定位误差进行仿真, 并将引入同向误差和反向误差的仿真结果进行对比。结果表明, 通过改变原来正方形阵元的布放位置, 定位误差分布会向原正方形对角部分压缩, 并且误差较大的面积会减少, 从而达到了降低误差、提高定位精度的目的。文中研究可为四元阵测量鱼雷入水点工程应用提供参考。Abstract: The accuracy of torpedo water-entry point is one of the main tactical and technical indexes for assessing per-formance of torpedo. For localizating torpedo water-entry point by four-element array, a localization algorithm is derived and simulated in this paper. The error caused by delay difference estimation is analyzed. An error equation is derived, and the main factors leading to larger error are given. Moreover, the localization errors of different array formations are simulated, and the simulation results with co-directional error and reverse error are compared. It shows that the localization error distribution will be compressed to the diagonal part of the original square by changing the placement of four-element array, and the area with larger errors will be reduced. Thus, the aim of reducing errors and improving localization accuracy is achieved.
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Key words:
- torpedo /
- water-entry point /
- four-element array /
- error distribution
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