Non-line-of-sight stable positioning method based on signal arrival time in wireless network
A wireless network and time-of-arrival technology, applied in the field of target positioning, can solve problems such as high computational complexity and many optimization variables to solve
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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] A non-line-of-sight robust positioning method based on signal arrival time in a wireless network proposed by the present invention, its overall flow chart is as follows figure 2 As shown, it includes the following steps:
[0031] ① Establish a plane coordinate system or space coordinate system as the reference coordinate system in the wireless network non-line-of-sight environment, and assume that there is an unknown target source and N sensors in the wireless network non-line-of-sight environment, and the unknown target source is in the reference coordinate system The coordinates in the reference coordinate system are x, and the coordinates of N sensors in the reference coordinate system are corresponding to s 1 ,s 2 ,...,s N , where N≥3, if N=6, s 1 Indicates the coordinates of the first sensor in the reference coordinate system,...
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