CPC G01S 19/071 (2019.08) [G01C 5/00 (2013.01); G01C 25/00 (2013.01)] | 20 Claims |
1. A method comprising:
determining an altitude determination accuracy of a device;
comparing the altitude determination accuracy of the device with a threshold altitude determination accuracy to determine whether the altitude determination accuracy of the device exceeds the threshold altitude determination accuracy;
responsive to determining that the altitude determination accuracy exceeds the threshold altitude determination accuracy, performing a calibration process associated with a barometric sensor of the device, wherein the calibration process comprises performing one or more barometric measurements using the barometric sensor of the device to determine one or more barometric pressure measures;
receiving one or more global navigation satellite system (GNSS) signals and one or more corrective signals associated with the one or more GNSS signals;
determining, based upon the one or more GNSS signals and the one or more corrective signals, one or more locations of the device;
determining one or more reference values based upon the one or more locations of the device;
determining, based upon the one or more barometric pressure measures and the one or more reference values, a barometric offset associated with barometric measurement using the barometric sensor; and
performing a first barometric measurement using the barometric sensor to determine a first barometric pressure measure, wherein an altitude of the device is determined based upon the first barometric pressure measure and the barometric offset.
|