Patent ID: 7460065

Claim:
An RTK-GPS surveying system for surveying an object, comprising: at least one satellite positioning device as a base station configured to send correction data; a plurality of satellite positioning devices as rover stations configured to receive the correction data; and a server provided in an IP-VPN communication network for establishing communication between the satellite positioning device as the base station and the plurality of satellite positioning devices as the rover stations, each of the satellite positioning devices, comprising: a satellite positioning part for receiving radio waves from a satellite; a communication part for performing communication between each of the satellite positioning devices; and a control part for controlling the satellite positioning part and the communication part, the control part of each of the satellite positioning devices, including: a rover station function executing program which executes a rover station function; and a base station function executing program which executes a base station function, the control part of each of the satellite positioning devices being configured to switch between the rover station function and the base station function, wherein each of the communication parts has a specific ID assigned for each of the satellite positioning devices, wherein the server includes the specific ID of each of the communication parts registered for each of the satellite positioning devices, and wherein the server verifies the specific ID registered in the server and the specific ID registered in each of the satellite positioning devices, and allows login to the IP-VPN communication network, so as to establish the communication between the satellite positioning device as the rover station and the satellite positioning device as the base station.