Abstract

GNSS is widely used in professional athletic training as an outdoor location based services, and the indoor positioning technology has gradually flourished in the gymnasium. To keep up with the demand for athletic training in indoor and outdoor environment, integration of indoor and outdoor positioning technology can achieve a seamless indoor/outdoor position solution. The proposed method uses GPS/BEIDOU with IMU-MEMS technology for outdoor positioning and UWB with IMU-MEMS technology for indoor positioning to provide high precision positioning services. The experimental results show that the proposed method can achieve meter level position accuracy in outdoor environment and centimeter level position accuracy in indoor environment, it can provide precise and real-time positioning service for effective athletic training aid.

Highlights

  • Global Navigation Satellite System (GNSS) has been practically used for wide variety of sports, such as the measurement of distance, velocity, trajectory and so on

  • The GNSS/IMU navigation is superior to the single navigation strategy, this is mainly reflected in the following two points: (1) GNSS constrains the error characteristics of IMU over time, and can estimate the error of the sensor on-line; (2) IMU can improve the reliability and integrity of location based service (LBS), that is to say, the GNSS/IMU navigation can skip the estimation of position and speed while

  • The indoor positioning data is relatively stable because of the high positioning accuracy of Ultra Wideband (UWB), and most of the trajectory is displayed according to the actual test route

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Summary

Introduction

Global Navigation Satellite System (GNSS) has been practically used for wide variety of sports, such as the measurement of distance, velocity, trajectory and so on. It can be used in conjunction with accelerometer, heart rate meter and geographic information system to provide more detailed physical indicators for comprehensive analyzing [1]. The combination of GPS and WLAN for indoor and outdoor positioning was proposed [4,5], but the WLAN indoor localization technology has some shortcomings such as heavy workload of fingerprint collecting, susceptible to movement of Wi-Fi device and sensitive to multipath effect

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