Patent ID: 11892295
Assignee: NEXTNAV, LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A method, comprising:
determining a first estimated altitude of a mobile device without using any measurement from a pressure sensor of the mobile device;
generating a second estimated altitude of the mobile device using a measurement from the pressure sensor;
estimating a pressure sensor error of the pressure sensor using the first estimated altitude and the second estimated altitude; and
using the pressure sensor error to determine a calibration value for adjusting one or more measurements from the pressure sensor;
wherein determining the first estimated altitude further comprises:
identifying that a battery of the mobile device is charging;
in response to identifying that the battery of the mobile device is charging, identifying an altitude of a stored position, and the stored position was determined using a number of estimated positions that is greater than a threshold number of estimated positions;
receiving the altitude of the stored position; and
determining that the first estimated altitude is the altitude of the stored position.