INS/GPS组合导航系统的数据精确同步方法  

Method of exact data synchronization in GPS/INS integrated navigation system

作　　者：徐世许[1] 王涛[1] 

机构地区：[1]青岛大学自动化工程学院,青岛266071

出　　处：《中国惯性技术学报》2008年第5期563-565,共3页Journal of Chinese Inertial Technology

摘　　要：对来自不同导航传感器的数据进行同步化处理是进行滤波、信息融合的重要前提。对几种INS/GPS组合导航系统的数据同步处理方法进行研究,分析各自的优点和不足。针对浅组合导航系统,提出了由美国NI公司PXI-6608计数器/定时器、GPS接收机及PXI控制器组成的设计方案,分析了其同步实现的原理和方法。该同步方案的精度可达400 ns,适用于高精度要求的应用场合。The data synchronization is very important for effective estimate and data fusion in integrated navigation system. The advantages and disadvantages of some synchronization methods used in INS/GPS integrated navigation system were studied. A data synchronization method based on GPS receiver, PXI-6608 counter/timer and PXI controller produced by NI Company was presented. Its theory and method were analyzed which showed that the accuracy can reach 400 ns and is suitable for high-accuracy application.

关 键 词：组合导航 高精度 数据同步 INS/GPS 

分 类 号：U666.1[交通运输工程—船舶及航道工程]