At present,UWB technology is commonly used in indoor positioning.DW1000 is used to collect ranging data.Aiming at the problem of ultra wideband (UWB) precise positioning under signal interference,a positioning optimization model based on improved least square method is proposed,including the classification of interference and normal data and subsequent positioning.Aiming at the interference signal,combined with the three-dimensional geometric distribution of the base station,the distance related weight is introduced to improve the algorithm.The improved model can reduce the three-dimensional error by 33.31%.Finally,the dynamic prediction and simulation of UWB positioning in practice are carried out,and the effect is eximious.
Key words
DW1000 chip /
UWB positioning /
improved least square positioning model /
Logistic interference discrimination model
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