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

Claim 0:
1. 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 the first estimated altitude is determined by:
identifying a time period during which the measurement from the pressure sensor was measured;
identifying a stored position using the identified time period, wherein the stored position includes an estimate of an altitude the mobile device was at during the identified time period, and the stored position was determined using a number of estimated positions that is greater than a threshold number of estimated positions; and
determining that the first estimated altitude is the estimate of the altitude.