测试GPS定位精度，及高程,用户可自行修改其中参数，确定定位精度范围-Test GPS positioning accuracy, and the elevation, the user can modify its own parameters, to determine the scope of positioning accuracy

本软件所完成的业务范围有用户的注册和登录、站点维护、线路维护和公交查询。 -The completion of the software business scope include user registration and login, site maintenance, line maintenance and query of public transport.