基于GNSS OEM板的数据采集及解码实现

Implementation of Data Acqusition and Decode Based on GNSS OEM Board

概述测量型接收机的架构,分析BD970OEM板卡与ARM7架构卡片式电脑及其外部的通信机制,设计出基于ARM7架构卡片式电脑,实时获取BD970OEM板卡数据并具备实时解码功能的原理样机。针对其数据的正确性和可靠性,将BD970OEM板卡同Trimble NetR9采用零基线进行验证。结果表明,设计的测量型接收机原理样机可以连续稳定地运行,并实时解出正确可靠的观测值与星历数据。

Measurment receivers are an essential part of research satellite navigation system, but expensive and unchangeable of built-in algorithms limit its use and development. The architecture of measurement re- ceivers are overviewed, analyzed the BD970 OEM board with ARM7 architecture card of computer and its ex- ternal communication mechanism, designed principle prototype of measurement receiver based on the card based on ARM7 architecture computer which can obtain and decode real-time data from BD970 OEM board. For its correctness and reliability of data, will BD970 OEM board with Trimble refused NetR9 using zero-base line validation. The correctness and reliability of data are verifird by using zero-base line between BD970 OEM board and Trimble refused NetR9. Type experiment results show that the design of the measuring receiver principle prototype can be continuous and stable operation, and can work out accurate and reliable real-time observation and ephemeris data, preliminary validation of principle prototype is realized.