The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2022
Filed:
Jul. 23, 2020
Honeywell International Inc., Morris Plains, NJ (US);
James Arthur McDonald, New Brighton, MN (US);
Karl Abraham Keyzer, Minneapolis, MN (US);
Anthony Pritchard, Coon Rapids, MN (US);
Honeywell International Inc., Charlotte, NC (US);
Abstract
A spoofing detection system including at least one antenna, a receiver and a controller is provided. The at least one receiver is in communication with the at least one antenna to receive detected satellite signals. The controller is configured to determine raw pseudorange values from the received satellite signals. The controller is further configured to apply at least one first filter on the raw pseudorange values to generate at least an output of first filtered pseudorange values. The controller is also conjured to compare an output of the first filtered pseudorange values with one of the raw pseudorange values and second filtered pseudorange values from a second filter. The controller is further configured to determine if spoofing is present in the received satellite signals based on a determined divergence between the output of first filtered pseudorange values and one of the raw pseudorange values and the second filtered pseudorange values.