GNSS spoofing detection using terrain mapping
US11313974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2020 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jul 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/215
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system comprises processing circuitry configured to receive position data from a global navigation satellite system (GNSS) receiver and to receive a first vehicle height above terrain (HAT) from HAT circuitry. A lateral position and an altitude are derived from the position data. The processing circuitry is further configured to determine terrain elevation based upon the lateral position. The processing circuitry is further configured to determine a second vehicle height above terrain (HAT) based upon subtracting the determined terrain elevation from the altitude. The processing circuitry is further configured to detect GNSS spoofing based upon a difference between the first vehicle HAT and the second vehicle HAT; and upon detecting GNSS spoofing, issue an alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.