神经元实时辨识车辆导航系统中的GPS多径误差

GPS Mutipath Errors Identification in Vehicle Navigation System by Nerve Cell

在城市车辆导航过程中,多径误差是近距离差分GPS等高精度定位的主要误差源。文章首次提出神经元实时辨识GPS多径误差方法,它能实时辨识当前时刻GPS接收机输出的GPS信号是否含有多径误差,从而解决GPS多径误差对城市车辆导航定位精度的影响。把该方法用到实际工程中,其结果显示能够有效的消除GPS多径误差对城市车辆导航系统定位精度的影响。

In the application of vehicle navigation in city area, Multi-path errors are the main error source of GPS high-precision differential positioning in a near distance. An innovative method using nerve cell to discriminate GPS multi-path errors real-timely is introduced here. This means can distinguish whether the current signal output by GPS receiver has multi-path error or not, which reduces the error and decreases its influence to position precision. This method has been implemented in application project.And the result suggests that it is effective to eliminate the impact of multi-path error on the precision of urban vehicle navigation system.