Silent indoor multi-target positioning method based on microphone nonlinear characteristics
A multi-target positioning and microphone technology, applied in positioning, radio wave measurement systems, measuring devices, etc., can solve problems that limit the efficient operation of positioning systems, channel competition, positioning efficiency and energy consumption reduction, and achieve high-efficiency and low-energy multi-device positioning , Realize multi-device positioning and reduce positioning delay
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[0022] Example: such as figure 1As shown, a multi-target localization method in an anechoic room based on the nonlinear characteristics of microphones includes the following steps:
[0023] Step (1), multiple receiving devices for receiving sound signals are set in the target area to be positioned, and the number of receiving devices is determined according to the standard of not less than one receiving device per 4 square meters (that is, at least every 4 square meters needs to be equipped with Each receiving device can communicate and synchronize with each other. Each receiving device is equipped with a common microphone for receiving sound signals. The number of receiving devices in the target area is recorded as N, and the number of receiving devices for N is 1 -N is randomly sorted, the receiving device ranked nth is the nth receiving device, and its serial number is n, n=1, 2, ..., N;
[0024] Step (2), take the upper left corner of the target area as the origin, the ea...
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