UWB Indoor Positioning Using TWR

Abstract

Ultra-wideband (UWB) is a radio technology that can transit signal over a large spectrum but with low power consumption. Since the frequency bands of UWB are usually from 3.1GHz to 10.6GHz, using it as wireless communication can reduce jamming with other radio devices. So, this kind of radio technology is suitable for continuous and accurate indoor positioning. In this project, I studied two general ranging strategies (the Two Way Ranging and the Time Difference of Arrival) to get better understanding on their strengths, effectiveness and weakness in 2D dimension. I designed a prototype based on the DWM1000 Integrated Circuit chip from DecaWave and the Arduino Nano board. The core achievement was to perform positioning with the Two Way Ranging and trilateration. The data visualization is also performed with MATLAB. Finally, an evaluation of the testing results was conducted to perform the perspective of UWB indoor positioning.