So, what that means is that if I look at my trajectory at this point, that the acceleration vector is pointing in that direction.
这意味着如果我们在这点观察运动的轨迹，它的加速度是指向这个方向的。
2
This is convenient to obtain the velocity and acceleration of robot and robot trajectory tracking control.
得到了除冰机器人的速度和加速度计算方程，方便了除冰机器人的轨迹跟踪控制。
3
Because of the taking into consideration of the real time acceleration estimation, this filter method is applicable to maneuverable tracking of the target using its trajectory data.