Indoor Positioning Experiment Based on Phase Ranging with Bluetooth Low Energy (BLE)

Abstract

In this paper, we propose and demonstrate an indoor positioning scheme based on phase ranging with Bluetooth low energy (BLE). It is to deal with the contradiction between the cost and accuracy of today's indoor positioning system. The experiment is based on BLE multi-carrier phase ranging, and the DA14695 BLE module from Dialog Semiconductor is selected as the experimental hardware module. The linearized pseudo range observation equation and least square estimation are used to construct a positioning platform to verify its positioning effect. The experimental results show that the indoor positioning method based on BLE phase-based ranging has high positioning accuracy, and in view of the low-power and low-cost advantages of BLE itself, it shows that this indoor positioning scheme is feasible and has further research value.