Patent ID: 11940306
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A method of estimating the location of a wireless terminal, the method comprising:
receiving, by a data processing system, a sample of barometric pressure measured by a wireless terminal;
generating, by the data-processing system, a characterization of a pressure wave in the vicinity of the wireless terminal based on the sample; and
generating, by the data-processing system, an estimate of the location of the wireless terminal based on:
i) the characterization of the pressure wave in the vicinity of the wireless terminal, and
ii) a propagation characteristic of the pressure wave, wherein the propagation characteristic of the pressure wave is its speed of propagation, and
iii) the location at which a predetermined event occurs that causes the pressure wave.