一种声学测试弹着点坐标的稳健估计方法  

A robust estimation method of acoustic test for impact point coordinate

作　　者：王玉龙[1] 卢小汐 张亚辉[1] 李宏凯[1] 苏磊 WANG Yulong;LU Xiaoxi;ZHANG Yahui;LI Hongkai;SU Lei(Huayin Ordnance Test Center,Huayin 714200,China)

机构地区：[1]中国华阴兵器试验中心,陕西华阴714200

出　　处：《现代电子技术》2020年第9期25-28,32,共5页Modern Electronics Technique

基　　金：国防技术研究重点项目(1700010134);国防技术研究一般项目(2014SY32B6012)。

摘　　要：针对火炮弹着点声检靶系统中弹丸着靶坐标精度不稳定的问题,建立抗差最小二乘法。该方法通过等价权函数将抗差估计与最小二乘法结合起来,利用残差对异常值进行降权处理,从而消除异常值对精度的不良影响。最后,对火炮弹着点声检靶系统进行仿真分析。分析和试验表明,抗差最小二乘法对异常值是稳健的,且精度优于一般最小二乘法,当靶幅为10 m×10 m且风速测试误差为3 m/s时,火炮弹着点声检靶系统针对火炮弹丸弹着点坐标测试精度优于5 cm。A robustified least square method is established for the instability coordinate precision of the sound detection target system for the projectile impact point.In the method,the robust estimation is combined with the least square method by the equivalent weight function,and the residual is used to reduce the weight of the outliers to eliminate the adverse effects of the outliers on the accuracy.The simulation analysis of sound detection target system for the projectile impact point was carried out.The analysis and test results show that the robustified least square method is robust to outliers and its accuracy is higher than that obtained with the general least square method.When the target area is 10 m×10 m and the measurement error of wind speed is 3 m/s,the tested coordinate accuracy of the impact point obtained with the sound detection target system for projectile impact point is within 5 cm.

关 键 词：弹着点坐标 稳健估计 抗差最小二乘法 抗差估计 残差变化 声定位 

分 类 号：TN911.1-34[电子电信—通信与信息系统] TJ306[电子电信—信息与通信工程]