SINS/GPS數據融合中的時間校準方法研究

王仲濤 王紀兵
中國空空導彈研究院,河南洛陽471009
摘　要:
實際應用中，數據融合只能對同一時間點的數據進行融合。而捷聯慣導和GPS的輸出數據不在同一時間點上，因此，在數據融合前要先將二者輸出數據統一到相同的時間點。在比較不同數據融合方法的基礎上，選擇分段線性插值法對捷聯慣導和GPS的數據進行時間校準，仿真結果表明，該方法的時間校準性能良好，滿足系統的需求。[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