一个GPS补点软件，用于导航测速电子狗补点，有需要的下-A GPS complement point software for navigation speed electronic dog fill point, there is a need for the next

GPS 速度计算算法实现，并有实测数据，与汽车的码表相比，算法在40公里每小时比较准确- GPS speed calculation algorithm, and the measured data, compared with the vehicle code table, the algorithm more accurate in 40 km/h