中文摘要：

惯性器件与全球卫星定位系统（GPS）的组合导航成为目前车载导航的主流。无论在精度、性能、可靠性等各方面,GPS/DR组合导航系统都优于单独的GPS导航系统。在GPS信号丢失时,车载导航仪（GPS/GIS/DR）能利用陀螺自主导航,不间断提供导航信息并保持跟踪。

英文摘要：

The integrated navigation of inertia elements and GPS is becoming the mainstream of vehicular navigation system. Compared with conventional GPS navigation system ,integrated GPS/DR navigation has better performances in terms of accuracy ,performance ,reliability etc. Vehicular navigation system （GPS/GIS/DR） can provide uninterrupted navigation information and keep tracing through gyroscope autonomous navigation when GPS signals are inaccessible.