基于GPS的公路路面裂缝定位方法  

Pavement crack positioning based on GPS

作　　者：徐琨[1] 贺昱曜[1] 孙朝云[1] 裴建中[2] 

机构地区：[1]长安大学信息工程学院,陕西西安710064 [2]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《长安大学学报（自然科学版）》2008年第5期27-30,44,共5页Journal of Chang’an University(Natural Science Edition)

基　　金：特殊地区公路工程教育部重点实验室资助项目(KLP200501)

摘　　要：裂缝定位是路面裂缝检测与识别系统的关键问题之一。结合实际工程应用,给出了一种基于GPS的裂缝定位方法。首先应用正交多项式拟合的方法对原始定位数据进行误差校正,采用高斯投影获得平面定位数据;然后确定裂缝的相邻里程桩位置,使用分段插值方法插值出中间点坐标;最后计算出裂缝距最近里程桩的累积距离。结果表明,该算法应用于车速分别为50、60、70km/h的路面裂缝定位,最小误差为0.3368 m,最大误差为5.5623 m,满足了系统设计要求。Location is one of the key problems in pavement crack detection and recognition system. A method based on GPS is proposed with engineering application. The method of fitting based on orthogonal polynomial is used to remove the error, and the planar coordinates are got after Gauss projection firstly. The positions of the adjacent between two piles about the crack and the media dots are got applying interpolation algorithm. At last, the accumulated distance from the crack to the nearest pile are calculated. This algorithm is applied to locating the cracks when the vehicle＇s velocity is 50 km/h, 60 km/h and 70 km/h respectively, the minimum error is 0. 336 8 m. and the maximum error is 5. 562 3 m. Those results show this method can satisfy the design demands of the system. 1 tab. 4 figs, 9 refs.

关 键 词：道路工程 路面裂缝 GPS定位 数据处理 

分 类 号：U418.6[交通运输工程—道路与铁道工程]