Based on the error analysis of the algorithms based on average speed and average travel time, this paper promoted the urban traffic situation evaluation methods based on probe vehicle data.
本文在分别对基于平均速度和基于平均通过时间的算法误差分析的基础上，提出了基于浮动车技术的城市路况计算方法。
In this paper the error models of Angle, range and speed due to multipath effect in low Angle radar tracking are given.
给出了在雷达低仰角跟踪测量中由于多径效应影响而引起的雷达仰角、方位角、速度、距离误差的估算模型。
Aimed to the shortcoming of the ball screw error measurement instrument widely used today, a new measurement instrument with speed adaptive system was implemented in this paper.
针对目前广泛应用的滚珠丝杠误差检测系统的不足，实现了速度自适应的滚珠丝杠误差检测系统。
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