Secure method for determining the position of a receiving device

A method for determining a position of a receiving device, the method comprising:

• receiving, by the receiving device, global navigation satellite system (GNSS) signals transmitted from satellites of a global navigation satellite system;
• determining, by the receiving device, code data and phase information of the GNSS signals;
• determining a first distance of the receiving device from one or more of the satellites, based on the code data at a first time, and determining a first position information of the receiving device based on the first distance;
• determining a second distance of the receiving device from one or more of the satellites, based on the code data at a second time subsequent to the first time, and determining a second position information of the receiving device based on the second distance;
• determining a first difference between the first position information and the second position information;
• determining a third distance of the receiving device from one or more of the satellites based on the phase information at the first time, and determining a third position information of the receiving device based on the third distance;
• determining a fourth distance of the receiving device from one or more of the satellites based on the phase information at the second time, and determining a fourth position information of the receiving device based on the fourth distance;
• determining a second difference between the third position information and the fourth position information;
• and
• performing, by the receiving device, a plausibility check between the first difference and the second difference to detect whether at least one of the GNSS signals is a manipulating signal, the plausibility check including:
• comparing the first difference to the second difference, and
• determining that at least one of the GNSS signals is the manipulating signal when the comparison indicates that the first difference is incompatible with the second difference,
• wherein the first position information is not equal to the first distance, the second position information is not equal to the second distance, the third position information is not equal to the third distance, and the fourth position information is not equal to the fourth distance.