Signal inconsistency detection of spoofing
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus relating to signal inconsistency detection of spoofing (SIDS), i.e. the use of inconsistencies in signals received at a plurality of points in space to detect spoofing.
-
Citations
40 Claims
-
1-21. -21. (canceled)
-
22. A method of detecting spoofing using one or more radio receivers, at least one antenna, and an inertial reference system, comprising:
-
computing velocity changes of the at least one antenna;
estimating a difference between navigation measurements to be received by the antenna from a navigation system at least two time periods based on the computed velocity changes; and
comparing the estimated difference to an actual difference between navigation measurements derived from signals received at at least two time periods to determine whether the received signal is a spoofing signal. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A method of validating a navigation signal using a radio receiver having an antenna and an inertial reference system, comprising:
-
obtaining a first navigation measurement from a navigation signal with the antenna in a first position;
obtaining a second navigation measurement from the navigation signal with the antenna in a second position;
calculating a difference between the first and second measurements;
estimating a difference between a first navigation measurement to be obtained with the antenna in a first position and a second navigation measurement to be obtained with the antenna in a second position;
comparing the estimated difference to the calculated difference; and
determining validity of the navigation signal based on the comparison. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
-
Specification