METHOD AND APPARATUS FOR REAL-TIME, MOBILE-BASED POSITIONING ACCORDING TO SENSOR AND RADIO FREQUENCY MEASUREMENTS

摘要

Method, hardware, device, computer program, and apparatus for positioning mobile devices in unmapped locations based on motion sensor and radio frequency measurements are described. A reference radio signal is received from a transmitter with an unknown absolute position and a reference range measurement is calculated. Mobile device motion sensor data is used to estimate a relative position of the mobile device. A sample radio signal is received from a transmitter with an unknown absolute position and a sample range measurement is calculated. The reference range measurement and the sample range measurement are compared. The estimated motion sensor based position is adjusted according to the result of the comparison.

主权项

1. A method for mobile device positioning, the method comprising:
receiving a reference radio signal from a transmitter with unknown absolute position; measuring at least one characteristic of the reference radio signal; calculating a reference range measurement between a mobile device and the transmitter using the at least one characteristic of the reference radio signal; receiving mobile device motion sensor data; estimating a position of the mobile device based on the mobile device motion sensor data; receiving a sample radio signal from the transmitter with unknown absolute position; measuring at least one characteristic of the sample radio signal; calculating a sample range measurement between the mobile device and the transmitter using the at least one characteristic of the sample radio signal; comparing the reference range measurement to the sample range measurement; and adjusting the estimated motion sensor based position of the mobile device according to a result of the comparison.