GNSS correction data distribution device, GNSS correction data distribution system, and GNSS correction data distribution method

A GNSS (Global Navigation Satellite System) correction data distribution device configured to distribute GNSS correction data to a terminal device, the terminal device configured to perform real time kinematic positioning using a GNSS, the GNSS correction data distribution device comprising:

• a first communicator configured to communicate with the terminal device;
• a second communicator configured to communicate with a GNSS correction data server;
• a storage configured to store GNSS correction data information, the GNSS correction data information having at least one predetermined coordinate and GNSS correction data in association with each other;
• and
• a manager configured to manage the GNSS correction data information, wherein the manager is configured to:
• obtain the GNSS correction data from the GNSS correction data server through the second communicator with respect to the predetermined coordinate in the GNSS correction data information, and update the GNSS correction data information while associating the predetermined coordinate with the GNSS correction data, and
• refer to the GNSS correction data information upon receipt of a GNSS correction data distribution request from the terminal device through the first communicator, extract the GNSS correction data of the predetermined coordinate corresponding to a position of the terminal device, and distribute the extracted GNSS correction data to the terminal device.