At present

indoor locatlization method based on signal strength in complex indoor environment are vulnerable to the interference of obstacles which can lead to inaccurate positioning results

and generally need to deploy a large number of base stations

the cost is high. An indoor positioning method based on dynamic time warping（DTW） is proposed

which can realize high-precision positioning of indoor multi-floors according to the indoor geomagnetic signal feature fusion barometric sensor.In order to enhance the adaptability and accuracy of the algorithm

the DTW algorithm is used for characteristics matching.The algorithm is deployed to hardware system

and the results show that the matching accuracy of DTW is higher than 95 % and the average positioning error is about 1.6 m.