RTK-GPS surveying system

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.