修正建筑物内三维定位误差的运动感知方法研究
赵辉;李擎;李超
【期刊名称】《计算机应用研究》 【年(卷),期】2017(034)009
【摘要】针对行人室内惯性定位存在航向发散和累积误差的问题,提出采用运动感知的方法实时识别行人的运动状态,利用行人状态约束(直线运动)和特殊运动状态(上下楼梯、乘坐电梯、90°或180°转弯)的特殊点匹配方法来抑制航向的发散,消除累积误差;提取加速度信号的时域特征,利用神经网络对行人运动状态进行识别,不同的运动形式(走、跑、上下楼梯)采取不同的步长模型,从而提高位置推算精度.为验证算法的有效性,在4楼和6楼之间进行多次行走实验,实验结果表明,通过运动感知可以明显抑制航向的发散,消除累积误差,三维空间内的定位误差约为总行程的1.6％.%Aiming at the problem of course divergence and cumulative error in the pedestrian indoor inertial positioning,this paper developed a motion perception method,which used the pedestrian state constraint and special points matching to restrain course divergence and eliminate cumulative error.The method extracted the time-domain features to identify the motion states by training neural networks.Different movement forms adopted respective stride length model.In order to verify the effectiveness of the algorithm,this paper carried out moving experiments between the 4th and 6th floors.The results show that the proposed method can restrain the course divergence effectively and eliminate the cumulative error
修正建筑物内三维定位误差的运动感知方法研究
