Positioning for Search and Rescue in GPS-Denied Area by Distributed WiFi RSS-Based DoA Modules
Journal
IEEE Access
Journal Volume
10
Pages
76105
Date Issued
2022-01-01
Author(s)
Huang, Shih Yi
Abstract
Environmental factors affect the Received Signal Strength (RSS) so the received data exhibit random propagation characteristics, such as fading and shadowing effects. This study proposes a Direction of Arrival (DoA) module for the Search and Rescue (SaR) or anti-drone applications, which uses patch antennas and a rat-race coupler as the receivers. An angular estimation is presented for WiFi positioning, using optimally placed DoA antennas and a pseudo-inverse algorithm. The experiment is performed in a university campus with the device under test (DUT) as the transmitter. Using four DoA antennas as receivers at the corners of a 100m times 100text{m} region, the mean positioning deviation is about 2m, which is 2% of the region. The confidence range for the estimated positions is also calculated.
Subjects
Optimal DoA placement | rat-race coupler | search and rescue | Wi-Fi positioning
SDGs
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Type
journal article