NLOS identification and mitigation for time-based indoor localization systems: survey and future research directions

RE Nkrow, B Silva, D Boshoff, G Hancke… - ACM Computing …, 2024 - dl.acm.org
One hurdle to accurate indoor localization using time-based networks is the presence of
Non-Line-Of-Sight (NLOS) and multipath signals, affecting the accuracy of ranging in indoor …

Semidefinite programming for NLOS error mitigation in TDOA localization

Z Su, G Shao, H Liu - IEEE communications letters, 2017 - ieeexplore.ieee.org
Non-line-of-sight (NLOS) error mitigation for the time-of-arrival (TOA) localization has been
extensively studied, but these methods cannot be directly applied for the time-difference-of …

Exploiting user mobility for WiFi RTT positioning: A geometric approach

K Han, SM Yu, SL Kim, SW Ko - IEEE Internet of Things Journal, 2021 - ieeexplore.ieee.org
Recently, round-trip time (RTT) measured by a fine-timing measurement protocol has
received great attention in the area of WiFi positioning. It provides an acceptable ranging …

Extreme learning machine for accurate indoor localization using RSSI fingerprints in multifloor environments

J Yan, G Qi, B Kang, X Wu, H Liu - IEEE Internet of Things …, 2021 - ieeexplore.ieee.org
A new extreme learning machine (ELM) localization technique that uses received signal
strength indicator fingerprints only is proposed for multifloor environments. This structured …

A novel TOA-based mobile localization technique under mixed LOS/NLOS conditions for cellular networks

Z Abu-Shaban, X Zhou… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
The presence of a non-line-of-sight (NLOS) link between a base station (BS) and a mobile
station (MS) in a cellular network is a major issue that limits the performance of the majority …

Pose estimation for two-view panoramas based on keypoint matching: A comparative study and critical analysis

J Murrugarra-Llerena… - Proceedings of the …, 2022 - openaccess.thecvf.com
Pose estimation is a crucial problem in several computer vision and robotics applications.
For the two-view scenario, the typical pipeline consists of finding point correspondences …

Vehicle localization based on hypothesis test in NLOS scenarios

W Zhao, R He, B Ai, Z Zhong… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Recently, vehicle-to-vehicle (V2V) based localization has attracted much attention due to its
potential to achieve high accuracy. However, the error caused by non-line-of-sight (NLOS) …

Extreme learning machine and AdaBoost-based localization using CSI and RSSI

J Yan, C Ma, B Kang, X Wu, H Liu - IEEE Communications …, 2021 - ieeexplore.ieee.org
This letter develops an extreme learning machine (ELM) and AdaBoost technique for indoor
localization using channel state information (CSI) and received signal strength indicators …

A robust algorithm for classification and rejection of NLOS signals in narrowband ultrasonic localization systems

S Haigh, J Kulon, A Partlow, P Rogers… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
This paper develops a novel algorithm for classifying and rejecting non-line-of-sight
ultrasonic signals for use in indoor positioning and measurement systems. The algorithm …

An efficient NLOS errors mitigation algorithm for TOA-based localization

Y Zou, H Liu - Sensors, 2020 - mdpi.com
In time-of-arrival (TOA) localization systems, errors caused by non-line-of-sight (NLOS)
signal propagation could significantly degrade the location accuracy. Existing works on …