基于GPS/GMS的车辆管理调度系统

尽管全球定位系统(GPS)是现在精度最高的无线电导航系统，但GPS的原始精度仍不满足有些应用领域．人们在不断提出新的方法，提高系统的定位精度．基于输出的数据处理就是一种广泛采用的技术．但是如何在有限的资源下，使用简单、有效的算法提高GPS的测量精度是车载GPS等领域需要解决的．本文研究一种基于单个GPS接收机输出数据的滤波、平滑处理有效的方法，并通过仿真实验验证该方法在提高GPS定位精度的有效性．同时将其应用到所开发的车载GPS中，样机的运行结果表明该方法对于提高GPS定位精度的作用明显，

Dispatching System of Vehicle Management Based on GPS/GMS

In this paper,a method is proposed to improve the system measure accuracy by applicating the simple and efficient algorithm under the condition that the system is poor in its source .Although Global Positioning System(GPS) is the most accurate radio navigation system at present.However most application territories are not satisfied with the original precision of GPS,and want to achieve the better quality.The data processing based on the data output from GPS is applied widely.There are two kind of the basic methods of GPS data processing.One is the filtering or average processing based on the output data of the GPS,and the other is the differential processing of lots of GPS.In this paper,firstly the feasibility of median filter in the improvement on GPS accuracy is described by the simulation,and then the compile program is written,lastly the program is transformed into the GPS to improve the GPS accuracy.The data output from the GPS indicates that the GPS accuracy is improved significantly.