Design of Ultra-Wideband Localization System Based on Optimized Time Difference of Arrival Algorithm

摘要

In order to solve the problem of low accuracy in indoor positioning, a system based on ultra-wideband and optimized time difference of arrival (TDOA) is designed. The optimized algorithm of TDOA is adopted to solve the problem of synchronization between anchors and improve the positioning accuracy. The use of LoRa technology for wireless data transmission between anchors improves the flexibility of anchor layout. According to the test, the system can work stably in corridors, rooms, warehouses and other scenarios, and the positioning error is controlled at about 13 cm. The positioning accuracy is 10 times that of the positioning system using WiFi and Bluetooth technology, which can meet the requirements of accurate mobile positioning in complex indoor environment. (c) 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.