SINS/GPS数据融合中的时间校准方法研究

王仲涛 王纪兵
中国空空导弹研究院,河南洛阳471009
摘　要:
实际应用中，数据融合只能对同一时间点的数据进行融合。而捷联惯导和GPS的输出数据不在同一时间点上，因此，在数据融合前要先将二者输出数据统一到相同的时间点。在比较不同数据融合方法的基础上，选择分段线性插值法对捷联惯导和GPS的数据进行时间校准，仿真结果表明，该方法的时间校准性能良好，满足系统的需求。[著者文摘]

Research of Time Zero Method in SINS/GPS Data FusionWANG Zhong-tao, WANG Ji-bing China Airborne Missile Academy, Luoyang 471009, ChinaAbstract:
In practice, the data fusion must be on the same time point, but the datum come from SINS and GPS are not on the same time point, and so it is essential to calibrate these datum to the same time point before data synchronization fusion. By comparing the different methods of data fusion, subsection linear imterpolation method is used to calibrate the datum of SINS and GPS. The simulation results show that this method meets the requirement for the system.[著者文摘]
Key words:
data fusion; time zero; SINS/GPS combined navigation; linear interpolation