Method for realizing indoor positioning based on multi-information fusion

Abstract

The invention relates to a method for realizing indoor positioning based on multi-information fusion. The method comprises the following steps: performing indoor navigation map initialization by a terminal by virtue of a magnetic inductor and a camera; performing positioning system and inertia system initialization by the terminal by adopting local position coordinates; acquiring the angle information of the magnetic inductor and an accelerometer by the terminal, and performing current dead reckoning; performing space absolute position calculation and inertia system feedback correction by the terminal; estimating the current space position according to the dead reckoning information and the space absolute positioning information by the terminal; and starting a path planning algorithm according to the current position information and to-be-reached position information by the terminal, and performing feasible path selection. With the adoption of the method for realizing indoor positioning based on multi-information fusion, multiple positioning methods are comprehensively utilized, interference caused by indoor building structures is effectively reduced, the universality, feasibility and accuracy of the indoor positioning algorithm are improved, and the method has wide application range.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to the technical field of indoor positioning, and specifically refers to a method for realizing indoor positioning based on multi-information fusion. Background technique [0002] For more than ten years, in order to solve the "last mile" problem of outdoor positioning and navigation, technology giants and research institutions have carried out a lot of research on indoor positioning technology, such as assisted GPS (A-GPS) based on mobile communication networks, pseudolite (Pseudolite), wireless local area network (WLAN), radio frequency tag (RFID), Zigbee, Bluetooth (Bluetooth, BT), ultra-wideband radio (UltraWideBand, UWB), geomagnetic other satellite or terrestrial digital communication and broadcasting signals, infrared positioning, light tracking positioning, computer vision positioning, ultrasonic positioning, etc. Some of these technologies are dedicated or main...

AI Technical Summary

Problems solved by technology

[0004] Each method has its own advantages and disadvantages. Some deployments are complicated, but easy to operate and use; simple deployments or solutions that do not require new deployments often have complex background algorithms or low precision

Indoor positioning is interfered by the internal structure of the building, and it is difficult to solve the positioning problem with a single solution

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