Indoor parking lot navigation method based on fusion of WiFi and sensor network technology

The invention discloses an indoor parking lot navigation method based on fusion of WiFi and sensor network technology. The indoor parking lot navigation method comprises a parking cell detection module and a fusion positioning module, wherein the fusion positioning module determines whether a parking cell is occupied by a vehicle according to intensity changes of an earth magnetic field before and after parking. The parking cell detection method has the advantages of low cost, easiness in installation and the like compared with a traditional detection method. The fusion positioning module adopts a fusion positioning method in which geomagnetic sensing network and WiFi positioning technology are fused together. The geomagnetic sensing network can acquire the area and lane where a vehicle is located in real time; since the geomagnetic sensing network and the WiFi positioning technology are fused together for positioning, positioning precision can be greatly improved, and the precise position of the vehicle in a parking lot is provided; and through combined usage of information about unoccupied parking cell provided by parking cell detection technology, fast parking by the user is facilitated.