基于磁通门/GPS组合导航系统中的坐标转换算法

Coordinates Conversion based on Integrated Navigation System of Fluxgate Sensor and GPS

针对车辆导航系统中GPS定位信息和DR定位信息在电子地图中的显示问题,即84坐标和平面直角坐标到80坐标的转换问题,使用WGS84大地坐标—空间坐标—WGS80大地坐标的转换算法,实现了GPS定位信息的电子地图显示;针对平面直角坐标和80经纬度坐标的转换问题,提出了一种基于距离的平面直角坐标转换算法。通过实际跑车实验,证明了上述算法计算量小、实时性好,可以真实地反映车辆的运动轨迹。

Aiming at display of GPS positioning information and dead reckoning positioning information of the vehicle navigation system in the electronics map, i.e. converting from 84 and plane rectangular coordinates to 80 coordinates system, this paper proposes a conversion algorithm of WGS84 geodetic coordinates-spatial Rectangular Coordinates-WGS80 geodetic coordinates to achieve the display of GPS positioning in the electronic map. Aiming at conversion of plane rectangular coordinates to 80 coordinates of electronic map, a coordinate conversion method based on distance is proposed. The experimental results show that the algorithm has advantage of computing easily. And it is real-time and can reflect real movement trajectory of the vehicle in the navigation system.