Integrated Multiple Sensing Nodes for a Three-Dimensional Coordinate Map Positioning System

Nowadays, many scenarios require 3D positioning. The current application of global positioning systems in indoor environments is unlikely to meet the requirement for high-precision positioning due to the influence of obstacles. Therefore, this paper proposes to use the ultra-wideband (UWB) positioning module for 3D positioning measurements in indoor environments. Based on the characteristics of UWB, the positioning error can be reduced to less than 1 m. Regarding equipment, 3D coordinates can be positioned only by using four UWB positioning modules as three anchors and one Tag. Compared with Wi-Fi and BLE positioning methods, the proposed method can achieve simple equipment deployment and better positioning accuracy.