多GPS架构下汽车测试数据处理方法

摘要

To enhance the efficiency and reliability of vehicle test and measurement applying GPS technolo-gy, a vehicle dynamic parameter measurement method using multi-GPS is studied. For eliminating the positioning error of GPS, a measured data correction scheme is proposed, effectively ensuring the accuracy of relative position between multi-GPS and vehicle driving trajectory. Meanwhile, inertial measurement unit is utilized to synchronously measure vehicle yaw rate during driving, which is then compared with that calculated by GPS data. The results show that both results agree well with each other, demonstrating the high accuracy of vehicle driving trajectory and related dynamic parameters obtained by the data processing scheme proposed, meeting the requirements of road test on ve-hicle performance.%为提高应用GPS技术的汽车测试中的效率和可靠性,本文中研究了一种采用多个GPS的汽车动态参数测量方法.为消除GPS定位误差,提出了一种测试数据修正方法,有效地保证了多GPS之间的相对位置和汽车运行轨迹的精确性.同时利用惯性测量单元同步测量汽车运行中的横摆角速度,并与GPS数据计算得到的横摆角速度进行对比.结果表明,两者很好地吻合,说明所提出的动态数据处理方法计算得到的汽车行驶轨迹和有关动态参数的精度满足汽车性能道路试验要求.