摘要
对于城市车辆GPS导航来说 ,其很大的一个缺点是跟踪卫星的信号常常由于建筑物、隧道及树木等的遮挡而使GPS的定位精度大大降低 ,甚至无法进行正常的导航和定位。为此 ,作者研制、开发了基于DSP的车载GPS/DR/MM组合导航仪 ,本文详细介绍导航仪的硬件组成和软件编程 ,给出导航仪的组合方法 ,并进行跑车试验。试验结果表明导航仪具有良好的导航与定位性能 ,解决了单纯GPS系统无法连续定位和行驶中的车辆“上房”问题。
GPS can not be used continuously for city vehicle navigation due to the loss of satellite signals by obstructions from buildings, tunnels and trees etc and it leads to low positioning accuracy.Therefore, a kind of GPS/DR/MM integrated navigation instrument for vehicle based on DSP is developed in this paper.The design hardware and software is presented and the integrating method of the integrated navigation instrument is discussed.Dynamic test is performed finally.Test results demonstrate the effectiveness of the GPS/DR/MM integrated navigation instrument, and this system solves the problems that GPS can not be used continuously and the situation of the vehicle is probable located on the buildings.
出处
《公路交通科技》
CAS
CSCD
北大核心
2002年第6期131-135,共5页
Journal of Highway and Transportation Research and Development
基金
清华 中大博士后基金项目
关键词
全球定位系统
航位推算
地图匹配
组合导航
数字信号处理器
Global positioning system
Dead reckoning
Map Matching
Integrated navigation
Digital signal processor
