Precise kinematic gps surveying can provide users with the precise position , velocity , attitude and time information of the moving platform in real - time or post - processing modes . it is now increasingly used for many surveying and navigation applications on land , at sea or in the air 精密gps动态测量能实时或事后地给用户提供高精度的位置、速度、加速度、姿态和时间信息,它在陆地、海面或航空中的导航和测量应用越来越广泛。