Patent ID: 11906634
Assignee: NOVATEL INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The computer implemented method of claim 6, wherein the signal authentication procedure further comprises:
in response to determining that the second double difference does not exceed the predefined C/N0 threshold, waiting a predefined time period;
during the predefined time period, repeatedly:
calculating a third double difference of a second C/N0 of the signals;
determining whether the third double difference of the second C/N0 exceeds the predefined C/N0 threshold;
in response to determining that the third double difference of the second C/N0 exceeds the predefined C/N0 threshold, determining that the signals are authentic; and

upon the predefined time period elapsing without determining that the third double difference of the second C/N0 exceeds the predefined C/N0 threshold, determining that the signals are the spoofing signals.