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

Claim 17:
18. The receiver of claim 17, wherein when performing the channel distortion authentication procedure, the processor is further configured to:
wait a predefined time period in response to determining that the second value does not exceed the predefined pseudorange threshold;
during the predefined time period, the processor further configured to repeatedly:
measure a third double difference of a second pseudorange measurement of the signals;
determine whether a third value corresponding to the third double difference of the second pseudorange measurement exceeds the predefined pseudorange threshold;
determine that the signals are authentic in response to determining that the third value exceeds the predefined pseudorange threshold; and
determine that the signals are the spoofing signals upon the predefined time period elapsing without determining that the third value exceeds the predefined pseudorange threshold.