BDS／GPS Data Real-time Acquisition and Research on Decoding Arithmetic Based on Development Board of STM32
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摘要: 针对实时接收BDS／GPS数据丢失、存储不合理、解码精度低等问题,提出以基于STM32F103RET6微控制器为核心的开发板为载体,通过编写数据实时采集与解码算法,实现对数据的存储与计算,得到高精度的伪距、载波等观测值,并实时输出BDS／GPS组合系统伪距单点定位结果。测试结果表明,单点定位的标准差为9 m左右,均方根误差为14 m左右,该开发板运行稳定、使用方便,可为实现多系统数据实时采集、解码和差分计算提供基础。Abstract: According to the fact that it occurred data loss, unreasonable storage, low accuracy of decoding when receiving the realtime BDS／GPS data. This paper presented a program of the realtime data acquisition and decoding, taking the development board based on STM32F103RET6 microcontroller as carrier. It achieved data storage and calculation, and got high precision pseudorange, carrier observations. Meanwhile, it calculated the pseudorange single point positioning by combined BDS／GPS.The results show that the standard deviation is about 9 meters and RMSE is about 14 meters, the development board is proved stable and easy to use. This is the basis of data realtime acquisition, decoding and differential computation of multi-GNSS.
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