一种基于信息融合的滤波算法研究

Research on filtering algorithm based on information fusion

针对GPS接收机在高机动工作状态或受遮挡时易出现“丢星”现象而导致定位中断的问题,提出了一种采用INS/GPS/DVS组合导航系统对载体进行快速定位、定向的新方法。为了研究平台式惯导INS、全球定位系统GPS和多普勒导航系统DVS组合导航联邦滤波器的实现,用MATLAB对算法做了仿真验证。结果表明:算法具有计算量小、信息传输量少的优点,在确保整个组合系统可靠性的前提下,导航精度有了明显提高。该方法可有效地提高导航系统的精度和可靠性,为融合导航系统的数据分析和处理提供了一个有效途径。

According to the problems exist in GPS receiver when it works in super moving condition, this paper puts forward a new method . It takes INS/GPS/DVS integrated navigation system as the object and gives a study on the federated filter data fusion technology, and proves the most superior estimate fusion algorithm through computer simulation. The results indicate that this project can enhance the accuracy and the reliably of integration navigation system. So it provides an effective way to realize the best performance of INS/GPS/DVS integrated navigation system in theory and practice. So it provides an efficient way for data analysis of fusion navigation system.