Systems And Methods For Extending The Spatial Coverage Of A Reference Pressure Network

A method comprising:

• determining, by one or more processors, an estimated position of a mobile device;
• determining, by the one or more processors, that the estimated position of the mobile device is outside a coverage area of a first network of reference pressure sensors;
• for each reference pressure sensor of the first network, determining, by the one or more processors, a distance between a respective reference pressure sensor and the estimated position of the mobile device;
• identifying, by the one or more processors, a first reference pressure sensor of the first network;
• identifying, by the one or more processors, a first reference pressure measured at the first reference pressure sensor;
• identifying, by the one or more processors, a second reference pressure that is associated with reference pressure sensors of a second network of reference pressure sensors, a location of the second reference pressure being nearest to the estimated position of the mobile device as compared to locations of other reference pressures associated with the second network;
• identifying, by the one or more processors, a third reference pressure that is associated with the reference pressure sensors of the second network, a location of the third reference pressure being nearest to the location of the first reference pressure sensor as compared to locations of other reference pressures associated with the second network;
• determining, by the one or more processors, an assigned reference-level pressure value using the first reference pressure, the second reference pressure, and the third reference pressure;
• and
• determining, by the one or more processors, an estimated altitude of the mobile device or calibrating a pressure sensor of the mobile device using the assigned reference-level pressure value.