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为实现高动态环境下组合导航系统稳定导航定位,设计基于软件接收机的分布式深组合导航仿真系统方案,采用改进的基于伪距、伪距率的组合滤波器校正SINS误差,并利用校正后的SINS信息对GNSS跟踪环路进行频率辅助。结合VC++和Matlab各自的特点,采用VC++与Matlab混合编程,搭建基于GNSS软件接收机的分布式深组合导航仿真系统,实现SINS与GNSS双向辅助。实验结果表明:高动态环境下,深组合导航系统能有效提高GNSS接收机动态跟踪性能,具有良好的组合导航定位能力。
In order to realize the stable navigation and positioning of integrated navigation system in high dynamic environment, the software receiver-based distributed deep integrated navigation simulation system is designed. The improved SINS error based on combination of pseudo-range and pseudo-range is used to correct SINS. The SINS information frequency assists the GNSS tracking loop. Combined with the characteristics of VC ++ and Matlab, a hybrid deep navigation system based on GNSS software receiver was constructed by VC ++ and Matlab mixed programming to realize the two-way assistance of SINS and GNSS. The experimental results show that the deep integrated navigation system can effectively improve the dynamic tracking performance of the GNSS receiver under high dynamic environment and has good combined navigation and positioning capabilities.