Reading Method and Experimental Evaluation of the UWB System D-DWM-PG3.6 for Local Positioning

Thuan-Tien Tran (Nam Can Tho University, 168 Nguyen Van Cu Street, An Binh Ward, Can Tho City, 94118,)
Quoc-Thanh Tra (Can Tho University, Campus II, 3/2 Street, Ninh Kieu Ward, Can Tho City, 94115,)
Chi-Ngon Nguyen (Nam Can Tho University, 168 Nguyen Van Cu Street, An Binh Ward, Can Tho City, 94118)
Phuong-Lan Tran-Nguyen (Can Tho University, Campus II, 3/2 Street, Ninh Kieu Ward, Can Tho City, 94115,)
Quoc-Khanh Huynh (Can Tho University, Campus II, 3/2 Street, Ninh Kieu Ward, Can Tho City, 94115,)

Journal of Engineering and Technological Sciences
Vol. 58 No. 4 (2026): Vol. 58 No. 4(2026): August

The UWB D-DWM-PG3.6 is a standalone positioning system based on Decawave’s (now Qorvo) ultra-wideband technology. It is designed for local positioning without requiring satellite data systems, making it effective in areas with weak or unstable GPS signals. This study focuses on developing a method for reading and filtering data from the UWB system to obtain stable position parameters.  Outlier data are removed, and filtering by moving average helps to smooth and stabilize the position data. Experiments were conducted in a 40×30 m space to evaluate the method’s accuracy. The results show an average positioning error of 7.1 ± 3.6 cm, with a maximum of 26.9 cm under obstructed conditions. These findings highlight the potential for navigation applications in autonomous devices operating in enclosed spaces, such as warehouses and agricultural greenhouses, at a reasonable cost. However, the error magnitude indicates that the system should be integrated with ultrasonic sensors, recognition cameras, or laser technology to improve accuracy.