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US 2026/0177708 A1Published application
System and method for determining gnss positioning corrections
AssigneeSwift Navigation, Inc.
InventorsBenjamin Lipeles Segal, Mark Fine, Joseph Angelo, Leith Bade, Fergus MacPherson Noble
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Abstract
A system or method for generating GNSS corrections can include receiving satellite observations associated with a set of satellites at a reference station, determining atmospheric corrections valid within a geographical area; wherein geographical areas associated with different atmospheric corrections can be overlapping, and wherein the atmospheric corrections can be provided to a GNSS receiver when the locality of the GNSS receiver is within a transmission region of the geographical area.
Claims20
A method comprising:
- generating a spatially-variant model of delays to satellite signals resulting from passing through Earth's atmosphere;
- forming a grid of atmospheric corrections by fitting the spatially-variant model of delays to a plurality of fitting functions, wherein each fitting function of the plurality of fitting functions is associated with a distinct grid box forming the grid of atmospheric functions;
- and
- transmitting a fitting function of the plurality of fitting functions to a global navigation satellite system (GNSS) receiver, wherein the fitting function of the plurality of fitting functions is selected based on a locality of the GNSS receiver.
1 more element
A system comprising:
- a corrections generator configured to:
- generate a spatially-variant model of delays to satellite signals resulting from passing through Earth's atmosphere;
- form a grid of atmospheric corrections by fitting the spatially-variant model of delays to a plurality of fitting functions, wherein each fitting function of the plurality of fitting functions is associated with a distinct grid box forming the grid of atmospheric functions;
- and
- transmit a fitting function of the plurality of fitting functions to a global navigation satellite system (GNSS) receiver, wherein the fitting function of the plurality of fitting functions is selected based on a locality of the GNSS receiver.
2 more elements
Dependencies are inferred from the claim text.