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发明授权
CN100587403C 交通信息数据的校正方法以及校正装置 失效 - 权利终止

交通信息数据的校正方法以及校正装置
摘要：
将路段旅行时间变换成车速后，对判断为异常的变换车速进行校正。将各路段的每个时刻的路段旅行时间(TT)变换成车速(V)，根据最大变化量(ΔVmax)与该车速(V)的单位时刻前的车速(Vb)的速度变化量(ΔV1)以及该车速(V)的单位时刻后的车速(Va)的速度变化量(ΔV2)，如果速度变化量(ΔV1)的符号与速度变化量(ΔV2)的符号不同，则对该车速进行校正时，在车速(Vb)上加上最大变化量(ΔVmax)。如果速度变化量(ΔV1)的符号与速度变化量(ΔV2)的符号相同，则对该车速进行校正时，使其等于单位时刻前的车速(Vb)和单位时刻后的车速(Va)的平均值。
摘要（英）：

To convert link travel times into vehicle speeds and then correct converted vehicle speeds judged to be anomalous. A link travel time TT in each link is converted into a vehicle speed V at every time.On the basis of a maximum variation [Delta]Vmax; a speed variation [Delta]V1between the vehicle speed V and a vehicle speed Vb previous by a unit time; and a speed variation [Delta]V2between a vehicle speed Va later by the unit time and the vehicle speed V, the vehicle speed is corrected by adding the maximum variation [Delta]Vmax to the vehicle speed Vb if the code of the speedvariation [Delta]V1is not the same as the code of the speed variation [Delta]V2. If the code of the speed variation [Delta]V1is the same as the code of the speed variation[Delta]V2, the vehicle speed is corrected in such a way as to take the same value as a means value of the vehicle speed Vb previous by the unit time and the vehicle speed Va later by the unittime.

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