Publication: RF signal strength sensing in indoor environment using UWB technology
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Date
2024-08
Authors
Luqman bin Auzir
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Abstract
Ultra-Wideband (UWB) technology is known for its high precision in localization systems, outperforming technologies such as RFID, Bluetooth, Zigbee,
and Wi-Fi under ideal conditions. The main purpose of this project is to investigate and decrease the error of measured distance between tag and anchor using UWB technology. The robot is integrated with PID controller using magnetic encoder, Kalman Filter to minimize the measured distance taken by the UWB module. The method used to measure distance is Single Sided Two-Way Ranging and direction is by Received Signal Strength (RSS). The direction of the anchor is identified by comparing the highest RSS value. There are two test field chosen for the robot which are Line of Sight (LOS) and Non-Line of Sight (NLOS) location. The ultrasonic sensor is implemented to cater with the NLOS environment. The minimal mean error achieved for LOS environment is 29.84cm with 18.61 standard deviation and for mean error in NLOS environment is 21.74cm with 20.03 standard deviation.