Method and system for verifying integrity of GPS position information

A method of verifying integrity of global positioning system (GPS) position information, performed in an unmanned moving object including one or more processors and a memory for storing one or more programs executed by the one or more processors, the method comprising:

• an operation of performing an authentication process for a connected base station, by the unmanned moving object;
• an operation of measuring a position of the unmanned moving object by performing wireless communication with a plurality of authenticated base stations;
• and
• an operation of verifying the GPS position information by comparing a value of the measured position with a position value of the GPS position information received from a satellite,
• wherein, when the authentication process has succeeded, but the verification of the GPS position information fails, the unmanned moving object does not transmit data to the base station,
• wherein the operation of the verifying comprises:
• an operation of calculating first dynamics of the unmanned moving object for a predetermined time period on the basis of the measured position value;
• an operation of calculating second dynamics of the unmanned moving object for a predetermined time period on the basis of the received GPS position information;
• an operation of confirming whether a difference between the first dynamics and the second dynamics is within a preset error range by comparing the first dynamics and the second dynamics to determine whether a GPS spoofing attack is performed on the unmanned mobile vehicle,
• wherein the operation of calculating the first dynamics includes:
• an operation of calculating a moving direction and a moving speed of the unmanned moving object on the basis of the measured position value;
• and
• an operation of calculating measured-position-based dynamics by accumulating the calculated moving direction and moving speed for a predetermined time period;
• and
• the operation of calculating the second dynamics includes:
• an operation of calculating a moving direction and a moving speed of the unmanned moving object on the basis of the received GPS position information;
• and
• an operation of calculating GPS-position-based dynamics by accumulating the calculated moving direction and moving speed for a predetermined time period.