Realtime 2-D DOA Estimation using Phase-Difference Projection (PDP). - Hui Chen 014; Tarig Ballal; Xing Liu 012; Tareq Y. Al-Naffouri (EUSIPCO, 2019)

GNSS Attitude Determination Using a Constrained Wrapped Least Squares Approach. - Xing Liu 012; Tarig Ballal; Tareq Y. Al-Naffouri (PLANS, 2020)

Deployment and Evaluation of a Real-time Kinematic System Using tinc-VPN Software. - Xing Liu 012; Tarig Ballal; Martins Bruvelis; Tareq Y. Al-Naffouri (PLANS, 2020)

Precise 3-D GNSS Attitude Determination Based on Riemannian Manifold Optimization Algorithms. - Ahmed Douik; Xing Liu 012; Tarig Ballal; Tareq Y. Al-Naffouri; Babak Hassibi (IEEE Trans. Signal Process., 2020)

Constrained Wrapped Least Squares: A Tool for High-Accuracy GNSS Attitude Determination. - Xing Liu 012; Tarig Ballal; Hui Chen 014; Tareq Y. Al-Naffouri (IEEE Trans. Instrum. Meas., 2022)

5G-Aided RTK Positioning in GNSS-Deprived Environments. - Pinjun Zheng; Xing Liu 012; Tarig Ballal; Tareq Y. Al-Naffouri (EUSIPCO, 2023)

Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays. - Mohanad Ahmed; Tarig Ballal; Xing Liu 012; Tareq Y. Al-Naffouri (PLANS, 2023)

Attitude Determination in Urban Canyons: A Synergy between GNSS and 5G Observations. - Pinjun Zheng; Xing Liu 012; Tarig Ballal; Tareq Y. Al-Naffouri (CoRR, 2023)

LEO Satellite and RIS: Two Keys to Seamless Indoor and Outdoor Localization. - Pinjun Zheng; Xing Liu 012; Jiguang He; Gonzalo Seco-Granados; Tareq Y. Al-Naffouri (CoRR, 2023)

Instantaneous GNSS Ambiguity Resolution and Attitude Determination via Riemannian Manifold Optimization. - Xing Liu 012; Tarig Ballal; Mohanad Ahmed; Tareq Y. Al-Naffouri (IEEE Trans. Aerosp. Electron. Syst., 2023)

Beamforming Design and Performance Evaluation for RIS-Aided Localization Using LEO Satellite Signals. - Lei Wang; Pinjun Zheng; Xing Liu 012; Tarig Ballal; Tareq Y. Al-Naffouri (ICASSP, 2024)

LEO- and RIS-Empowered User Tracking: A Riemannian Manifold Approach. - Pinjun Zheng; Xing Liu 012; Tareq Y. Al-Naffouri (IEEE J. Sel. Areas Commun., 2024)

GNSS Array-Based Multipath Detection Employing UKF on Manifolds. - Abdelgabar Ahmed; Tarig Ballal; Xing Liu 012; Mohanad Ahmed; Tareq Y. Al-Naffouri (PLANS, 2025)

Pseudorandom Code-Aided Acquisition and Tracking of Globalstar Satellite Signals for Opportunistic Navigation. - Xing Liu 012; José A. Lopez-Salcedo; Gonzalo Seco-Granados; Tareq Y. Al-Naffouri (PLANS, 2025)

Sparse Phase Retrieval for Phaseless Fourier Measurement Based on Riemannian Optimization. - Xiaodong Li; Ning Fu; Xing Liu 012; Liyan Qiao; Tareq Y. Al-Naffouri (IEEE Signal Process. Lett., 2025)

Performance Analysis of Antenna Array-Aided RTK Positioning. - Xing Liu 012; Tarig Ballal; Tareq Y. Al-Naffouri (IEEE Trans. Aerosp. Electron. Syst., 2025)

Integrated 6G TN and NTN Localization: Challenges, Opportunities, and Advancements. - Sharief Saleh; Pinjun Zheng; Xing Liu 012; Hui Chen 014; Musa Furkan Keskin; Basuki Priyanto; Martin Beale; Yasaman Ettefagh; Gonzalo Seco-Granados; Tareq Y. Al-Naffouri; Henk Wymeersch (IEEE Commun. Stand. Mag., 2025)