载体姿态变化对磁张量定位精度的影响

摘要

It is lack of analysis for vehicle attitude variation effect on the location precision.Theoretical analysis of the effect on the location precision due to the vehicle attitude variation was carried out.The localization algorithm of plane tensor system was derived firstly,and the coordinate system rotation matrix was calculated.Without considering the measuring errors of sensors,the location precision did not vary with the vehicle attitude variation,on the contrary,the location precision did vary,which was proved by simulation experiment.The analysis for the effect on the localization precision due to the vehicle attitude variation,provided theory guarantee for the application of magnetic tensor system in practical localization.%针对磁张量定位研究中,缺乏载体姿态变化对定位精度影响分析的问题,由磁张量定位公式出发,从理论上分析了载体姿态变化对磁张量定位精度的影响,得出在不考虑传感器测量误差时,载体姿态变化不影响张量系统定位精度；在考虑传感器测量误差时,定位精度随载体姿态的变化而变化.仿真实验表明,考虑磁场传感器测量误差,定位距离的相对误差随载体姿态变化而变化,最大值小于4.2％,验证了理论推导的结论,满足一般定位精度要求,并为实际选取传感器精度提供了依据.