【摘要】 本文介绍了Ntrip协议以及基于该协议通过GPRS向VRS控制中心上传用户授权信息和概略位置并下载差分改正的信息的方法,通过串口模块将RTCM差分改正信息发送到GPS接收机从而实现差分,提高了GPS数据采集的精度。阐述了基于ArcGIS Mobile的移动GIS系统的开发与实现,对开发中的遇到的问题和关键技术进行了总结。更多还原

【Abstract】 This paper firstly introduces Ntrip protocol and User’s authorization which is uploaded to VRS control center with rough position by GPRS.It could send the RTCM difference correct information to GPS rover by Serial Module to accomplish the difference and to improve the collect accuracy by GPS data.And then it describes how to realize the mobile GIS system based on ArcGIS Mobile.Finally,it summarizes the development of key technical problems that is encountered.更多还原