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:
Aug. 13, 2024
Filed:
Nov. 07, 2019
Topcon Positioning Systems, Inc., Livermore, CA (US);
Topcon Positioning Systems, Inc., Livermore, CA (US);
Abstract
An apparatus for detecting global navigation satellite system (GNSS) spoofing, including a GNSS receiver that includes a first radio-frequency front-end (RF1) connected to antenna 1; a second radio-frequency front-end (RF2) connected to antenna 2; a digital section connected to both RF1 and RF2 and controlled with a single frequency oscillator. The digital section generates a first set of GNSS raw measurements based on signals received from antenna 1; generates a second set of GNSS raw measurements based on signals received from antenna 2; computes single differences between simultaneous raw measurements, generated with the signals received from the antenna 1 and the antenna 2 for the same GNSS satellite; compares the single differences with a threshold; and issues a spoofing alert when more than one of the single differences is below a threshold.