Patent ID: 11921223
Assignee: NOVATEL INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. The receiver of claim 11, wherein when performing the signal authentication procedure, the processor is further configured to:
wait a predefined time period in response to determining that the second double difference does not exceed the predefined C/N0 threshold;
during the predefined time period, the processor further configured to repeatedly:
calculate a third double difference of a second C/N0 of the signals;
determine whether the third double difference of the second C/N0 exceeds the predefined C/N0 threshold;
determine that the signals are authentic in response to determining that the third double difference of the second C/N0 exceeds the predefined C/N0 threshold; and
determine that the signals are the spoofing signals upon the predefined time period elapsing without determining that the third double difference of the second C/N0 exceeds the predefined C/N0 threshold.