Mobile equipment positioning method in WALN (wireless local area netork)/Bluetooth heterogeneous network environment
A technology for heterogeneous networks and mobile devices, applied in electrical components, wireless communications, etc., can solve problems such as the decline of positioning accuracy, and achieve the effect of reducing the number of signals, improving positioning accuracy, and reducing the amount of calculation.
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[0035] The present invention will now be further described in detail with reference to the accompanying drawings.
[0036] When the present invention performs target positioning in a network environment where two wireless signals of WLAN and Bluetooth can be received, the Bayesian function is used to describe the position fingerprint feature of the signal strength in the fingerprint database acquisition stage, and the simplified method is used in the online positioning stage. The posterior probability matching algorithm of , obtains the reference position, and finally performs the weighted average processing on the reference position to obtain the positioning result.
[0037] In the following description, the unit of length is meters and the unit of time is seconds.
[0038] Offline sampling stage:
[0039] 1) The positioning area is a rectangular area of 18m×12m, and a fingerprint sampling grid point is set every 2m, a total of 70 fingerprint sampling grid points, such as ...
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