USE OF INERTIAL SENSOR DATA TO IMPROVE MOBILE STATION POSITIONING

An implementation of a system and method for using inertial sensor data to improve mobile station positioning is provided. Many mobile devices include an inertial sensor. These inertia measurements typically produce low resolution inertial measurements, which may be used to generate an uncertainty value and/or to select a positioning filter model. In some examples, this uncertainty value is used as a process noise input signal into a Kalman filter or similar filter. In some examples, one position estimate is selected from multiple navigation position filter models operating concurrently, each computing a separate position estimate. In these examples, a position estimate is selected based on either the uncertainty value or based on another characteristic of the inertia measurements.