| 摘要 |
<p>The invention relates to the field of indoor localization systems. In particular, the invention relates to indoor localization systems using handheld-devices, which use sound impulses emitted from said handheld devices. According to the invention, the system for localizing a mobile handheld device (1) comprises at least one mobile handheld device (1) capable of creating sound signals (2) comprising a unique identifier (5) to be emitted from a speaker of said mobile handheld device (1), a multitude of stationary receiver devices (3A, 3B, 3C) capable of detecting said sound signals (2) and generating time stamps (4) consisting of the time points of said sound signals (2), and communicating with each other and with a server (6), said server (6) being capable of calculating the position of the mobile handheld device (1), and of wirelessly transmitting a position information (7) signal of said position to the mobile handheld device (1). The invention further discloses a method for localizing a mobile handheld device (1) relatively to known positions of a network of at least three stationary receivers (3A, 3B, 3C), and method for the automatic calibration of a system as disclosed.</p> |
