| 摘要 |
According to an embodiment, a system for measuring a location of a smartphone using multiple speakers includes a sound signal generator generating waveforms of various types of sound signals and simultaneously generating different sound signals through several integrated speakers in order to measure a relative location of a positioning terminal device, and transmitting information related to the generated sound signals to the positioning terminal device or transmitting a particular ID to the positioning terminal device to differentiate the signal from the other sound signal generators; and the positioning terminal device simultaneously receiving particular sound signals from the respective speakers integrated with the sound signal generator, measuring an arrival delay time difference between the received sound signals through a signal processing step, and calculating its own relative location through the measured information or transmitting the measured information to the sound signal generator to calculate the relative location. Thus, a location estimation error and location estimation costs can be reduced. |
