Indoor human body positioning method based on wearable inertial measurement unit and infrared sensor network

The invention discloses an indoor human body positioning method based on a wearable inertial measurement unit and the infrared sensor network and belongs to the field of electronic positioning. The method specifically comprises steps of acquiring motion data by the wearable inertial measurement unit, constructing a human body motion model, fusing indoor map information by utilizing data observed by the infrared sensor network in an environment to reduce an accumulated error, and realizing indoor accurate positioning of a human body by adopting a positioning fusion algorithm. The method is advantaged in that the infrared sensor network is adopted to observe the data, accurate indoor positioning is carried out by fusing the indoor map information, according to the human body motion model algorithm, a motion model of a person wearing a wristband is constructed through gait recognition, step length estimation and course estimation, the infrared sensor network arranged in the environment isutilized for auxiliary p