Hunjoon Daniel Lee
Navigation, Estimation & Target Tracking @The University of Alabama
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WORK HISTORY
Navigation, Estimation & Target Tracking @The University of Alabama
Designed and implemented differential GNSS positioning using double-differenced carrier-phase measurements, achieving millimeter-level relative positioning accuracy in post-processed kinematic NED solutions.• Implemented carrier-phase ambiguity resolution techniques including float, rounded, geometry-free, and LAMBDA-based methods, and evaluated positioning accuracy against truth data.• Developed a 6-state error-state Extended Kalman Filter (ES-EKF) Attitude and Heading Reference System (AHRS), leveraging the error-state formulation to improve linearization stability and bias observability with sensor noise and bias random-walk modeling.• Implemented a 15-state loosely-coupled GNSS/INS navigation system using an ES-EKF, integrating inertial mechanization with intermittent GNSS updates to estimate position, velocity, attitude, and IMU biases from real UAV flight data.• Designed and evaluated single-target tracking filters for nonlinear bearing–range measurements under clutter and missed detections, comparing nearest-neighbor EKF and probabilistic data association filter (PDAF) performance for maneuvering targets with unknown turn rates
EDUCATION
The University of Alabama
Bachelor of Science - BS, Aerospace, Aeronautical and Astronautical Engineering
The University of Alabama
Doctor of Philosophy - PhD, Aerospace, Aeronautical and Astronautical Engineering
ABOUT HUNJOON DANIEL LEE
Aerospace Engineering at The University of Alabama
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