Search Results for author: Halim Lee

Found 10 papers, 0 papers with code

Performance Comparison of Numerical Optimization Algorithms for RSS-TOA-Based Target Localization

no code implementations24 Apr 2023 Halim Lee, Jiwon Seo

The average code computation time of the grid search was extremely large compared with those of the other two algorithms, and gradient descent exhibited the lowest computation time.

Evaluation of RF Fingerprinting-Aided RSS-Based Target Localization for Emergency Response

no code implementations19 Jun 2022 Halim Lee, Taewon Kang, Suhui Jeong, Jiwon Seo

Further, a maximum likelihood problem for target localization combining RF fingerprinting is formulated.

Urban Road Safety Prediction: A Satellite Navigation Perspective

no code implementations6 Jun 2022 Halim Lee, Jiwon Seo, Zaher M. Kassas

From a GNSS-based navigation perspective, the reliability of GNSS signals in different locales, which is heavily dependent on the road layout within the surrounding environment, is crucial to ensure safe automated driving.

Optimal Parameter Inflation to Enhance the Availability of Single-Frequency GBAS for Intelligent Air Transportation

no code implementations3 Nov 2021 Halim Lee, Sam Pullen, Jiyun Lee, Byungwoon Park, Moonseok Yoon, Jiwon Seo

Ground-based Augmentation System (GBAS) augments Global Navigation Satellite Systems (GNSS) to support the precision approach and landing of aircraft.

Position

GPS Multipath Detection Based on Carrier-to-Noise-Density Ratio Measurements from a Dual-Polarized Antenna

no code implementations21 Aug 2021 Sanghyun Kim, Halim Lee, Kwansik Park

In this study, the global positioning system (GPS) multipath detection was performed based on the carrier-to-noise-density ratio, C/N0, measured through a dual-polarized antenna.

Integrity-Based Path Planning Strategy for Urban Autonomous Vehicular Navigation Using GPS and Cellular Signals

no code implementations8 Oct 2020 Halim Lee, Jiwon Seo, Zaher M. Kassas

An integrity-based path planning strategy for autonomous ground vehicle (AGV) navigation in urban environments is developed.

Navigate

Neural Network-Based Ranging with LTE Channel Impulse Response for Localization in Indoor Environments

no code implementations24 Sep 2020 Halim Lee, Ali A. Abdallah, Jongmin Park, Jiwon Seo, Zaher M. Kassas

The results show a receiver navigating for 100 m in an indoor environment, while receiving signals from one LTE eNodeB.

Indoor Localization

RSS-based LTE Base Station Localization Using Single Receiver in Environment with Unknown Path-Loss Exponent

no code implementations24 Sep 2020 Suhui Jeong, Halim Lee, Taewon Kang, Jiwon Seo

In this paper, we suggest a method of RSS-based LTE base station (BS) localization with a single mobile receiver when the PLE is unknown.

A Preliminary Study of Machine-Learning-Based Ranging with LTE Channel Impulse Response in Multipath Environment

no code implementations24 Sep 2020 Halim Lee, Jiwon Seo

Alternative navigation technology to global navigation satellite systems (GNSSs) is required for unmanned ground vehicles (UGVs) in multipath environments (such as urban areas).

BIG-bench Machine Learning

Cannot find the paper you are looking for? You can Submit a new open access paper.