gps轨迹优化，gps采样的点显示轨迹的时候，由于gps漂移和定位精度的原因，地图上显示的轨迹不太理想，通过卡尔曼算法，是轨迹达到平滑的效果-gps trajectory optimization, gps sampling point display trajectory, because of drift and gps positioning accuracy reasons, the track displayed on the map is not ideal, through Kal

地图经纬度纠偏算法，可以实现原始GPS坐标转谷歌坐标，也可以实现谷歌坐标转百度坐标，当然也就能实现GPS坐标转百度坐标啦-Map latitude and longitude correction algorithm can achieve the original GPS coordinates turn Google coordinates, can also be achieved Google coordinates turn Baidu coordinates, of course,