Design of NTRIP Mobile Terminal Based on WinInet

On the basis of the study of the characters of hardware and software of embedded smart terminals and Networked Transport of RTCM via Internet Protocol(NTRIP),the NTRIP terminal connection to VRS network and differential data receiving are implemented by utilizing Windows Mobile 5.0 platform based WinInet API.The experimental result shows that the flexible-formed terminal can achieve VRS RTK in an economical and convenient way.