| 应用车载DGPS数据计算道路线形参数 |
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| 作者单位： | 广东省国土资源厅测绘院 |
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| 摘 要： | 为满足当前利用车载DGPS创建或更新道路信息的实际需求,研制了道路线形参数的计算方法。在此,鉴于车辆行驶线与道路中线之间存在着偏离,从理论上导出了不同道路线形下GPS数据的误差方程式以及连接各种线形的条件方程式。针对误差方程式中未知参数互不独立的情况,采取联合直线段与曲线段一并平差解算法。据此即可求出各段的线形参数并进行精度评定,最后通过算例验证了此方法的有效性与实用性。
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| 关 键 词： | 车载DGPS 线形参数 缓和曲线 |
Determination of Relevant Parameters for Road with Kinematic GPS |
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| Authors: | TANG Li-ming DING Hua-xiang ZHU Zi-yang |
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| Abstract: | Although much progress has been achieved in the field of updating the relevant parameters for road with Kinematic DGPS,there is much localization in formal achievements.The distances from the car roads to the center of lines are ignored and there aren't methods to estimate the road liner parameters' precisions.The error equations of GPS data were derived for multifarious road lines and all kinds of connective conditions were given.The grouping of GPS data was introduced with the robust method and the means of estimating the parameters' precisions was presented.An instance was used to testify the method introduced in the paper be reasonable and practical.There were some good proposes referred to in the end of the paper. |
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| Keywords: | kinematic DGPS relevant parameters for road transation curve |
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