Patent ID: 9146301
Filing Date: 2015-09-29
Classification: G01S

Abstract:
1. A mobile device, comprising: a sensor configured to receive an audio signal comprising at least one from among a pseudorandom sequence seed representing a periodic pseudorandom white noise and modulated music; an arrival time calculating unit configured to compare the received audio signal to a plurality of pre-stored audio tracks and estimate an arrival time of the received audio signal comprising the at least one from among the pseudorandom sequence seed representing the periodic pseudorandom white noise and the modulated music; and a location determination unit configured to determine a location of the mobile device based on the estimated arrival time the received audio signal comprising the at least one from among the pseudorandom sequence seed representing the periodic pseudorandom white noise and the modulated music and a location associated with each of the pre-stored plurality of audio tracks, wherein the arrival time calculating unit is configured to compare the received audio signal to the plurality of audio tracks by cross correlating the received audio signal with the plurality of pre-stored audio tracks.