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定位。为此,提出了基于DSP的GPS/DR组合定位系统,详细介绍了系统的硬件设计方法、组成和软件设计思想。最后进行了采用联合卡尔曼滤波器的GPS和DR系统的组合定位的仿真实验。实验证明,采用联合卡尔曼滤波算法的GPS/DR组合定位系统的转度明显高于GPS单独定位方式。
GPS can not be used continuously for city vehicle navigation due to the loss of satellite signals by obstructions from buildings,tunnel,trees and so on.Therefore,the integrated GPS/DR orientation System Based on DSP is introduced.The design method and composing of hardware and the design thinking of software are discussed in detail.In the end,integrated GPS/DR orientation system of federated Kalman filter is simulated.The result shows that its accuracy is better than that of GPS orientation System.
出处
《科学技术与工程》
2007年第21期5647-5651,共5页
Science Technology and Engineering
