Satellite navigation system fault detection based on biased measurements
US8610624B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Apr 9, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Example embodiments disclosed herein provide for a method for detecting a fault in a receiver for a satellite navigation system. The method includes calculating a plurality of measurement residuals corresponding to a position solution and combining the plurality of measurement residuals to form a test statistic. The method also includes calculating a threshold corresponding to the test statistic, wherein calculating the threshold includes selecting the threshold to be a value from a non-central chi squared distribution of possible test statistics that corresponds to a desired probability of false alarm. The test statistic is compared to the threshold and if the test statistic is larger than the threshold, performing at least one of: outputting an alarm indicative of a fault in the position solution and discarding the position solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.