快速车载式道路高程测量系统

Fast vehicle-mounted road elevation survey system

针对道路高程人工测量中效率较低、误差不易控制等问题,提出了基于GPS和惯性原理的快速车载式路面高程测量方法。以GPS、姿态传感器和增量式旋转编码器等传感器为基础,在车辆高速行驶时,同步采集传感器测量的经纬度、海拔、行驶速度以及车辆的俯仰角,分别解算出俯仰角度积分高程和GPS高程,并对二者采用数据融合的方法计算出道路的高程,最后进行了实例验证和测量误差分析。研究结果表明：给出的车载式路面高程测量方法,在20~50km/h的测量速度下,高程测量的平均误差为15cm,测量相关性优于99.9%;该测量方法简单、高效,具有较强的实用性,可用于车载式道路高程的快速准确测量。

Aiming at the low efficiency and poor error control in artificial elevation survey, this paper presented a fast vehicle-mounted road elevation measurement method based on GPS and inertial principle. On the basis of GPS, attitude sensor, incremental rotary encoder and other sensors, the latitude, longitude, altitude, vehicle speed and pitch angle of the vehicle were measured when the vehicle was driving at high speed. The pitching angle integral elevation and the GPS elevation were calculated respectively. With these data, the elevation of the road was calculated by employing date fusion method. Finally, an experiment was given to verify this system and the error analysis of measurement was made. The research results show that by using the method of vehicle-mounted road elevation survey system, the average error of road elevation survey is 15 cm at the vehicle speed of 20 km/h to 50 kin/h, and the measurement correlation is more than 99.9M. This method is simple, efficient and easy to implement. It can be used for the rapid and accurate measurement of vehicle-mounted road elevation. 3 tabs, 7 figs, 9 refs.