IPNL — Intelligent Positioning and Navigation Laboratory
IPNL — Intelligent Positioning and Navigation Laboratory
Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University
Research Themes
Robust GNSS Positioning in Urban Environments
Multipath/NLOS detection, mitigation, non-Gaussian modeling, and integrity monitoring for reliable positioning in dense cities.
Factor Graph Optimization for GNSS and GNSS/INS
Factor graphs and probabilistic optimization for GNSS/INS fusion, constraint-aware positioning, and urban precise positioning.
3D Mapping-Aided Positioning and Environment Awareness
Using 3D city models, LiDAR reconstruction, and prior maps for positioning and reliability assessment.
Tightly Coupled Multi-Sensor Fusion
GNSS/LiDAR/IMU/camera fusion frameworks for continuous, drift-free navigation in adverse conditions.
Smartphone and Android GNSS Positioning
Models and inference robust to low-cost sensors, urban positioning improved by learning and probabilistic fusion.
Indoor Positioning and Indoor Navigation
UWB/INS integration, indoor navigation systems, and deployment constraints.
Flagship Projects
Integrity-Constrained Factor Graph Optimization
ongoingSafety-critical GNSS positioning with integrity monitoring using factor graph frameworks
People
Principal Investigator
Postdoctoral Fellows
PhD Students
MSc Students
Administrative Staff
Research Assistants
Latest News
Dr. Hsu named in Stanford Top 2% Most-Cited Scientists
Dr. Li-Ta Hsu has been listed among the top 2% most-cited scientists worldwide in the Stanford/Elsevier ranking for five consecutive years (2021-2025).
Dr. Hsu re-elected as ION Technical Representative
Dr. Hsu was re-elected as Technical Representative to the ION Council, continuing his leadership role in the navigation community.
Dr. Hsu serves as General Chair for IPIN 2024
Dr. Hsu served as General Chair for the International Conference on Indoor Positioning and Indoor Navigation (IPIN) 2024 at PolyU.
UrbanNav paper receives ION Most Cited Paper Award
The Hong Kong UrbanNav dataset paper received the Most Cited Paper Award from the journal NAVIGATION.
Dr. Hsu completes visiting researcher position at Google
Dr. Hsu completed a 20-month visiting researcher position with the Google Android Context team, working on smartphone GNSS positioning.
Selected Publications
Open Resources
UrbanNav Dataset
Open multisensory dataset for benchmarking positioning and urban navigation algorithms
Join IPNL
We are looking for PhD students, postdocs, and visiting researchers in GNSS, positioning, and navigation.
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