基于GPS定位的导航地图的转换与纠正方法

Map Transformation and Rectification for Navigation by Global Positioning System Positioning

介绍了利用GPS定位技术对低精度的地图进行转换和变形纠正的算法 ,结合实例分析了GPS数据采集、坐标转换和利用拟合算法进行地图纠正的步骤 ,对一次多项式、二次多项式和三次多项式的拟合结果进行了比较 ,结果表明采用二次或三次多项式拟合精度最好 ,获得了与GPS定位结果相匹配的精度 ,坐标分量X和Y的拟合精度分别为 8m和 17m ,纠正后的地图适合于一般车载导航和监控 .

Algorithms about map transformation and rectification navigation by GPS positioning are introduced in this paper.It is reasonable to fit navigation map coordinates with two or more than two powers polynomial to a certain extent of area.Accuracy of 8 m for coordinate X and 17 m for coordinate Y for map rectification with a GPS navigation test has been reached.The method can be applied for GPS vehicle navigation.