Correlating wireless signals to a location on an image using mobile sensor technologies

摘要

Using ground truth events and sensors available on a first mobile device, an algorithm executed at the first mobile device determines the mobile device's position; the first mobile device also obtains wireless signal information; the wireless signal information is associated with the position determined via the sensor data and ground truth events; the associated data is stored and may be sent to or used by a second device; the second device may then, for example, detect then-current wireless signal information and may locate the second device by looking up the then-current wireless signal information in the associated data.

主权项

1. A method of correlating wireless signals to a location in an image in a first computer comprising a memory, comprising:
at the first computer, receiving the image from a second computer; receiving a ground truth event at the first computer, which ground truth event determines the first computer to be at a first position in the image and identifying a first map coordinate corresponding to the first position; receiving data from sensors at the first computer; determining a second position and a second map coordinate corresponding to the second position of the first computer based on the data received from the sensors; at times proximate to when the first and second positions were determined, sampling wireless signal information at the first computer, which wireless signal information comprises radio-frequency energy emitted by a component of a wireless data network; storing the wireless signal information in association with the determined first and second position as correlated wireless signal and determined position information; and transmitting the correlated wireless signal and determined position information to a second computer.