单片机控制SIM900实现：无线模块自动连接服务器，检测服务器下发的数据-SCM SIM900 implementation: wireless module automatically connect to the server, the server sends data to detect lower

可对GPS数据进行相应的RINEX格式文件转换编辑以及质量检测-GPS data on the corresponding RINEX file conversion format editing and quality inspection!

该MATLAB程序确定用于非精确接近飞行阶段的接收机自主完整性监测（RAIM）基线标准算法（恒速率算法）和指定的输入数据集的可用性和故障标志（故障检测）。(This MATLAB program determines availability and failure flags (fault detection) for the Receiver Autonomous Integrity Monitoring (RAIM) baseline standard algorithm (constan