用互相关分析测定速度

• 作 者: 李之洪
• 机 构: 无锡市89001部队5分队,
• 出 处: 建筑机械
• 发表日期: 1988年09期
• 关键词: 互相关分析 车辆行驶速度 激光测速 测量速度 方法精度 行驶速度 秒表 标杆 方法误差 路面条件

一、引言车辆的行驶速度是一个重要的性能参数,通常用标杆秒表或光电激光测速设备来测量。这两种方法中,前一种方法误差较大,后一种方法精度高,但只适用于特定跑道上,不适用于任意路面,而且用这种方法只能测出平均速度。采用五轮仪测量速度,安装五轮仪较麻烦,且只适用于平坦路面,在砂石路及越野路面上,因五轮跳动,测量不准确。采用互相关分析测定车辆行驶速度就是在

I. INTRODUCTION The driving speed of a vehicle is an important performance parameter, usually measured by a benchmark stopwatch or a photoelectric laser speed measuring device. Of the two methods, the former method has a large error, and the latter method has high precision, but only on a specific runway, not on any road surface, and only the average speed can be measured by this method. The use of five-wheel measuring speed, installation of five-wheel device is more troublesome, and only applies to the flat road, gravel road and off-road, due to five wheel beats, the measurement is not accurate. Cross-correlation analysis is used to determine the speed of the vehicle