System and method for pedestrian navigation based on multiple sensors

Abstract

The invention discloses a system and method for pedestrian navigation based on multiple sensors. A sensor module comprises a GPS, an MEMS accelerometer, an MEMS gyroscope, a magnetic compass and a barometer. When the GPS is free of signal blockage, the GPS is adopted to perform navigation positioning. When GPS signal failure occurs, the MEMS accelerometer is utilized to collect and detect pedestrian's walking step number, the pedestrian walking course is calculated through data combination of the MEMS gyroscope and the magnetic compass, and a pedestrian's motion track in the plane is calculated according to the step number and navigation. A motion track of a pedestrian in the height direction is obtained by utilizing data obtained by the MEMS accelerometer and the barometer, and the positioning of a motion track of the pedestrian in a three-dimensional space is achieved. According to the system and method for pedestrian navigation based on the multiple sensors, the shortcoming that single GPS signals are lowered in performance when being indoors or being blocked out, and normal navigation and positioning cannot be performed is overcome, the requirements for small size and low cost of a personal navigating instrument are met, and the system and method for pedestrian navigation are more suitable for navigation of walking pedestrians.

Description

technical field [0001] The invention belongs to the technical field of navigation, and in particular relates to a method for realizing a pedestrian navigation system based on multiple sensors. Background technique [0002] Many human activities, such as field exploration, business trips, and scenic spot tourism, are not completed in fixed locations. When we are in an unfamiliar environment, the need for positioning and navigation information is particularly urgent. The pedestrian navigation system can measure pedestrian activity information through handheld or wearable sensor combination modules, and finally determine the real-time position and speed of pedestrians through navigation computer calculations. [0003] Most of the currently developed pedestrian navigation systems are equipped with GPS devices for navigation. However, pedestrians have complex motion characteristics and unpredictable motion paths. When they are in urban streets, indoors, underground facilities, an...

AI Technical Summary

Problems solved by technology

[0003] Most of the currently developed pedestrian navigation systems are equipped with GPS devices for navigation. However, pedestrians have complex motion characteristics and unpredictable motion paths. When they are in urban streets, indoors, underground facilities, and dense forest areas, GPS The navigation performance will be significantly reduced, and normal positioning and navigation will not be possible.

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