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    • 61. 发明公开
    • Pedestrian navigation method and apparatus operative in a dead reckoning mode
    • 在einem Koppelnavigationsmodus funktionierendeFussgängernavigationsverfahrenund -vorrichtung
    • EP1253404A2
    • 2002-10-30
    • EP02008974.4
    • 2002-04-23
    • Ladetto, QuentinGabaglio, Vincentvan Seeters, Josephus
    • Ladetto, QuentinGabaglio, Vincentvan Seeters, Josephus
    • G01C22/00G01C21/16
    • G06K9/00348G01C21/16G01C21/206G01C22/006
    • A displacement of a pedestrian is determined from his or her accelerations by detecting accelerations which are substantially non vertical, determining a characteristic feature in the detected accelerations correlated with a step frequency, determining the displacement on the basis of said determined characteristic.
      The acceleration data can be submitted to waveform analysis to determine an actualized time interval of an occurring feature, such a maximum values, from which it is determined whether the actualized time period falls within determined limit values. The currently detected characteristic feature is then determined as corresponding to a displacement step if the actualized time period falls within said determined limit value.
      By using non-vertical acceleration measurements, the invention can make it possible to distinguish between forward, backward, left and right stepping movements and take these into account for the navigation.
    • 通过检测基本上不垂直的加速度来确定行人的位移,通过检测基本上不垂直的加速度来确定与步进频率相关的检测到的加速度中的特征特征,基于所确定的特性确定位移。 加速度数据可以被提交到波形分析以确定发生特征的实际时间间隔,例如确定实际时间段是否在确定的极限值内的最大值。 如果实际的时间段落在所述确定的极限值内,则当前检测到的特征特征被确定为对应于位移步长。 通过使用非垂直加速度测量,本发明可以区分前进,后退,左右步进运动并将其考虑在导航中。