talks & presentations

2025

  1. Error modeling framework for GBAS integrity under ionospheric scintillation
    A. K. Sun and J. Lee
    Oct 2025
    Oral presentation at 2025 SCPNT Symposium, Menlo Park, CA
  2. A stochastic modeling approach for phase transition‑induced errors in GBAS under ionospheric scintillation
    A. K. Sun, J. Lee, M. Caamano, and S. Pullen
    Sep 2025
    Oral presentation at ION GNSS+, Baltimore, MD [F4-5]

2024

  1. Phase screen model for extreme scintillations: Evaluating theoretical limits in propagation approximations
    A. K. Sun, C. Rino, Y. J. Morton, B. Breitsch, and J. Lee
    Dec 2024
    Oral presentation at AGU Fall Meeting, Washington, D.C. [SA54B-07]
  2. Investigation of the development of traveling ionospheric disturbances during the total solar eclipses on 21 August 2017 and 8 April 2024
    A. K. Sun, H. Kil, H. Chang, W. K. Lee, and J. Lee
    Dec 2024
    Poster presentation at AGU Fall Meeting, Washington, D.C. [SH51D-2920]
  3. Impact of phase transitions due to ionospheric scintillation on GBAS integrity
    A. K. Sun, J. Lee, and S. Pullen
    Sep 2024
    Oral presentation at ION GNSS+, Baltimore, MD [B2-5]
  4. Assessment of ionospheric perturbations during total solar eclipses
    A. K. Sun, H. Kil, H. Chang, W. K. Lee, and J. Lee
    Jul 2024
    Oral presentation at COSPAR 2024, Busan, Korea [C1.3-0005-24]
  5. Ionosphric scintillation effects across multiple carrier frequency bands transmitted from LEO satellites
    A. K. Sun, Y. J. Morton, and J. Lee
    Jan 2024
    Oral presentation at ION ITM, Long Beach, CA [A1-2]

2023

  1. Study of characteristics and sources of late-night equatorial electron density irregularities
    A. K. Sun, H. Kil, H. Chang, and J. Lee
    Dec 2023
    Oral presentation at AGU Fall Meeting, San Francisco, CA [SA51A-07]
  2. Mid-latitude ionospheric scintillation impact on availability of dual-frequency GNSS augmentation systems
    A. K. Sun, J. Chang, J. Lee, B. Breitsch, Y. J. Morton, and 1 more author
    Sep 2023
    Oral presentation at ION GNSS+, Denver, CO [B1-2]
  3. Availability assessment of dual-frequency GNSS-based augmentation systems under equatorial ionospheric scintillations
    A. K. Sun, J. Chang, J. Lee, B. Breitsch, and Y. J. Morton
    Jan 2023
    Oral presentation at ION ITM, Long Beach, CA

2021

  1. GNSS carrier frequency dependence of ionospheric scintillation index in equatorial regions
    A. K. Sun, J. Lee, X. Pi, M. Kriegel, and J. Berdermann
    Aug 2021
    Oral presentation at URSI GASS, Virtual [We-G08-PM3-2]

2020

  1. Performance benefit from dual-frequency GNSS-based aviation applications under ionospheric scintillation: A new approach to fading process modeling
    A. K. Sun, H. Chang, J. Lee, J. Seo, Y. J. Morton, and 1 more author
    Jan 2020
    oral presentation at ION ITM, San Diego, CA [A1-2]

2018

  1. Ionospheric scintillation effects on GBAS ground station pseudorange errors
    A. K. Sun, M. Yoon, M. Felux, and J. Lee
    Dec 2018
    Poster presentation at AGU Fall Meeting, Washington, D.C. [SA13C-2790]