利用相关估计的遥外弹道时间差修正新方法  

A New Method of Trajectory and Telemetry Time Difference Correction Based on the Relevant Estimation

作　　者：黄瑜[1] 

机构地区：[1]91550部队94分队

出　　处：《科学技术与工程》2011年第4期907-911,共5页Science Technology and Engineering

摘　　要：遥外弹道时间对不齐误差在遥外联合数据处理中对制导工具系统误差分离具有重要影响,提出一种利用相关估计对遥外弹道时间差修正的新方法。直接利用遥外弹道跟踪数据进行相关估计受到系统偏差和随机误差的影响,难以得到精确的估计结果。在分析遥外弹道跟踪数据特性的基础上,利用最小二乘法提取出遥测和外测弹道跟踪数据趋势项,并将趋势项归一化处理后作相关估计求取时间偏差,然后对原始弹道跟踪数据进行时间修正。计算机仿真和试验数据处理证明这一方法在遥外弹道跟踪数据时间差修正上具有较高精度。Time for not neat error between the trajectory and telemetry has important influences on the guidance tools error separation.A new method of time difference correction which uses the relevant estimation is proposed.It is difficult to get accurate estimate result using the trajectory and telemetry tracking data to estimate because of the systematic deviation and random error.On the analysis of the characteristics of trajectory and telemetry tracking data,the least-square method is used to extract the tracking data trends item,after normalization calculates the time deviation with relevant estimation.Then corrects the time error of the original tracking data.Computer simulation and experimental data processing prove the method has high precision.

关 键 词：遥外联合 相关估计 最小二乘 趋势项 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]