传统的网络RTK中数据中心和流动站的数据传输一般采用RTCM SC‐104格式，而数据中心和参考站之间一般采用接收机厂商自定义的实时数据格式。为了满足新一代网络RTK多系统，多信息类型的实时数据传输，RTCM 委员会专门推出了最新的 RTCM 10403.2数据格式。本文详细介绍了最新版的 RTCM3.2电文特点，新增的MSM 电文，编、解码方式以及对BDS系统的支持。给出了M SM电文组的解码流程，通过对实时数据进行解码实验，证明了算法的正确性和可靠性。%The standard of RTCM SC‐104 has been widely used in transmitting the data between analysis center and mobile stations .However ,the traditional communication be‐tween analysis center and reference stations usually use the self‐defining standard made by the GNSS receiver producer .The least version RTCM3.2 was made to support the DGNSS data transmission .This paper introduced the message type ,the added MSM ,the main infor‐mation packaged in the message ,and the part related to the BDS .A practical coding and de‐coding method of converting GNSS observation data between binary data was proposed .The method is proved to be correct and effective .
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