Trusted signal acquisition in positioning system receivers
US11415701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2019 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Oct 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/215
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Approaches for detecting and/or rejecting fraudulent positioning system signals at one or more positioning system receivers. The receivers may establish a time search window that may be maintained beyond a time in which a fraudulent signal is expected to move away from an authentic signal a sufficient amount so as to fall outside the time search window. Various approaches are described for updating the time signal at the receiver to maintain accuracy without acquiescing to the introduced bias of a fraudulent signal. Also, an approach for evaluation of candidate signals for consistency at one or more stationary receivers is described. Also, approaches for collective evaluation of signals provided from networked receivers are described to provide sentry receivers operative to detect and alert the presence of a fraudulent signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.