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US 2024/0201392 A1Published application
System and method for bounding a satellite positioning solution integrity
AssigneeSwift Navigation, Inc.
InventorsPhilippe Brocard, Damien Theureau, Jan Bolting, Isak Tjernberg, Sébastien Carcanague
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Abstract
A method can include, or a system can be configured to perform the steps of, receiving satellite signals, determining a monitor condition, determining a monitor performance, determining a residual error magnitude, fitting the residual error magnitude, and determining a positioning solution.
Claims20
A method comprising:
- receiving global navigation satellite signal (GNSS) corrections;
- determining a corrections monitor probability distribution associated with a corrections monitor;
- for each integrity risk of a plurality of integrity risks:
- determining a probability of false alarm driven threshold associated with the corrections monitor probability distribution;
- determining a residual error magnitude such that a probability of missed detection is met at the false alarm driven threshold;
- and
- fitting the residual error magnitudes with a bound function that is greater than or equal to the residual error magnitudes for each integrity risk of the plurality of integrity risks.
4 more elements
A system for determining GNSS corrections and bounds associated therewith comprising:
- a corrections generator configured to:
- determine the GNSS corrections based on a set of satellite observations received from a set of reference stations;
- determine the bounds associated with the GNSS corrections;
- and
- an integrity monitor configured to determine whether the GNSS corrections exceed the bounds with a probability greater than an allocated integrity risk for the GNSS corrections to exceed the bounds;
- wherein the corrections generator is configured to determine the bounds based on a predicted ability of the integrity monitor to monitor the GNSS corrections.
3 more elements
Dependencies are inferred from the claim text.