Locating system based on intelligent mobile device and locating method
A technology of mobile equipment and positioning system, applied in positioning, radio wave measurement system, measurement device and other directions, can solve the problem of high cost of indoor precise positioning equipment, achieve the effect of simple structure, accurate positioning, and improve anti-noise performance
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[0048] see figure 1 As shown, as a positioning system based on an intelligent mobile device according to an embodiment of the present invention, the system includes:
[0049]Three locators, each of the locators is used to broadcast an audio signal, and the audio signal includes a locator ID. As a specific implementation, the locators are identified by multi-user orthogonal codes, that is, through Use different multi-user orthogonal codes to identify different locator IDs, and broadcast the audio signal after performing orthogonal encoding (such as BPSK) on the audio signal. Using multi-user orthogonal codes can effectively improve the anti-interference ability of the signal , and the BPSK encoding is simple and efficient to improve the system response speed; there is a simple reference time mechanism in the locator, and before each audio signal is sent, one or more distributed master locators send time synchronization signals; simple Time synchronization can also be used to e...
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