2026· Journal of Microwaves, Optoelectronics and Electromagnetic Applications· Vol 25· 0 citations· 15 references
TL;DR
This work demonstrates the feasibility of replacing expensive commercial DoA systems with affordable SDR-based alternatives, with advantages such as easy deployment and reconfigurability.
Abstract
Abstract This paper presents the development and experimental validation of a low-cost Direction of Arrival (DoA) estimation system using Software-Defined Radio (SDR) technology. The system employs an NI USRP B-210 with two printed log-periodic dipole antennas in a coherent configuration, implementing beamforming algorithms through GNU Radio software. Experimental validation was conducted in different environments at 3 GHz across a ±90◦ range. The system maintains accurate DoA estimates with interference levels up to 8 dB below the signal of interest. Performance limitations include front-back ambiguity inherent to two-element arrays and sensitivity to multipath effects. This work demonstrates the feasibility of replacing expensive commercial DoA systems with affordable SDR-based alternatives, with advantages such as easy deployment and reconfigurability.
A configurable DW1000-based ultra-wideband (UWB) platform for indoor localization with multiple anchors for TDoA implementation and provides a hardware and firmware basis for future synchronized multi-anchor experiments and quantitative localization evaluation is developed.
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