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US 12,736,683 B2Granted
System and method for GNSS correction monitoring
AssigneeSwift Navigation, Inc.
InventorsAlex Parkins, Isak Tjernberg, Rodrigo Reichert, Fergus MacPherson Noble, Sébastien Carcanague, Philippe Brocard
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Abstract
A system can include a computing system and optionally a GNSS receiver. The computing system can include a correction generator, one or more correction checker, one or more correction combiner, a positioning engine, and/or any suitable components. The computing system may be designed to be free from interference between components.
Claims18
A system comprising:
- a corrections generator configured to:
- receive a first set of satellite observations from a first set of reference stations;
- and
- determine GNSS corrections and bounds associated with the GNSS corrections using the first set of satellite observations;
- a plurality of corrections monitors, each corrections monitor of the plurality of corrections monitors in support of at least ASIL A safety and configured to:
- receive a unique set of satellite observations from a set of reference stations;
- receive the GNSS corrections from the corrections generator;
- and
- generate an integrity flag indicative of whether the GNSS corrections achieve a threshold safety;
- a corrections combiner operating in at least an ASIL B certified environment, wherein the corrections combiner is configured tomatch the plurality of integrity flags to the GNSS corrections;
- and
- a positioning engine configured to determine a positioning solution of a GNSS receiver using the converted GNSS corrections;
- wherein each integrity flag meets or exceeds an ASIL A safety rating, wherein the GNSS corrections meet or exceed an ASIL B safety rating after being matched to the plurality of integrity flags by the corrections combiner, wherein the positioning solution achieves ASIL D safety by combining the positioning solution determined using the positioning engine with an independent positioning solution derived from a positioning sensor that is distinct from the GNSS receiver, wherein the independent positioning solution is certified to at least ASIL B safety.
10 more elements
A system comprising:
- a corrections generator configured to:
- receive a first set of satellite observations from a first set of reference stations;
- and
- determine GNSS corrections and bounds associated with the GNSS corrections using the first set of satellite observations;
- a corrections monitor in support of at least ASIL A safety and configured to:
- receive a second set of satellite observations from a set of reference stations;
- receive the GNSS corrections from the corrections generator;
- generate an integrity flag indicative of whether the GNSS corrections achieve a threshold safety based on a residual calculated between the second set of satellite observations and the GNSS corrections;
- a positioning engine configured to determine a positioning solution of a GNSS receiver using the GNSS corrections;
- wherein the corrections monitor comprises a manager and a handler, wherein the handler operates free from interference from the manager, wherein the positioning solution achieves ASIL D safety by combining the positioning solution determined using the positioning engine with an independent positioning solution derived from a positioning sensor that is distinct from the GNSS receiver, wherein the independent positioning solution is certified to at least ASIL B safety.
7 more elements
Dependencies are inferred from the claim text.