第一是推测领航，指不断由车辆的陀螺仪和速度计显示的方向和速度数据计算本身的位置。
The first is Dead Reckoning, which computes its own positions from the direction and speed data continuously obtained from the gyroscope and speedometer in the vehicle.
第一是推测领航，指不断由车辆的陀螺仪和速度计显示的方向和速度数据计算本身的位置。
The first is Dead Reckoning, which computes its own positions from the direction and speed data continuously obtained from the gyroscope and speedometer in the vehicle.
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