基于多传感器的信息融合列车定位算法研究

针对轨道交通列车定位功能的需求,提出了基于轮轴速度传感器、加速度传感器和卫星定位的多传感器信息融合列车定位算法。在列车经过坡道、弯道时,通过轮轴速度传感器和加速度传感器,实现列车运行方向角度的计算,修正卫星定位的定位结果,提高卫星定位精度。通过现场试验验证,本文提出的算法能够有效地提高列车通过坡道、弯道时的定位精度,具有实际的应用价值。

Train Positioning Method Based on Multi-sensor Information Fusion

To meet the requirement of train positioning in rail transit,a train positioning algorithm based on information fusion of axle speed sensor,acceleration sensor and satellite positioning is proposed.Furthermore,the results of satellite positioning will be corrected and improved by calculating the angle of train travelling direction using axle speed sensor and acceleration sensor when the train is running through a ramp or a bend.Finally,it has been proved in field test that the algorithm based on several sensors can effectively improve the accuracy of train positioning in the ramp and the bend and is worthy to be applied.