Indoor positioning method and system based on inertial sensor and wireless signal characteristics

Abstract

The invention relates to a method and a system for indoor positioning based on an inertial sensor and wireless signal characteristics. The method comprises the following steps of: initializing the position of a positioning target in the space by a wireless signal characteristics method; detecting the motion state of the positioning target, if the positioning target is in an idle state, positioning the positioning target by the wireless signal characteristics method; if the positioning target is in a moving state, taking the last positioning point in idle state as the starting point to generate the movement locus of the positioning target by the inertial sensor, displaying the position and movement locus of the positioning target on a handheld device in real time, and simultaneously uploading the real-time position information to a background processing device via a wireless network. The system provided by the invention comprises the handheld device with the inertial sensor, wireless receiving nodes arranged in the indoor space, and the background processing device connected with the inertial sensor. Compared with the prior art, the method and the system have the advantages of high positioning precision, association of activity and inertia, and the like.

Description

technical field [0001] The invention relates to a positioning method and system in the field of mobile communication, in particular to an indoor positioning method and system based on inertial sensors and wireless signal characteristics. Background technique [0002] With the rapid growth of information, how to deal with big data and how to provide reliable information has become the key. Attaching a location tag to the information has become one of the most common processing methods. With the popularity of mobile and personal devices, positioning is hot. The positioning system can determine the location information of the device and use the location information for location-based services such as navigation, tracking, monitoring, etc. According to the scope of use, location-based services mainly include outdoor positioning applications and indoor positioning applications. The following are the main reasons for their implementation: [0003] 1. Outdoor positioning [00...

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to overcome the above defects in the prior art and provide an indoor positioning method and system based on inertial sensors and wireless signal characteristics with high positioning accuracy and a combination of static and dynamic, which can overcome the instability of wireless signals during movement The problem of inaccurate positioning can be solved, and it can also solve the problem that the inertial navigation system has a large cumulative error and cannot be used for a long time

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