talks & presentations

2026

  1. UNESP
    Error modeling framework for GBAS integrity under ionospheric scintillation
    A. K. Sun
    Aug 2026
    Invited talk at FCT UNESP, Brazil
  2. RTCA
    GBAS integrity under ionospheric scintillation: Error characterization, modeling, and performance evaluation
    A. K. Sun
    Jun 2026
    William E. Jackson Award presentation at RTCA Program Management Committee Meeting, Washington, D.C.
  3. KASI
    Ionospheric scintillation effects on LEO-transmitted signals
    A. K. Sun
    Feb 2026
    Invited talk at ATHENA Meeting, KASI, Daejeon, Korea

2025

  1. IPNT
    GBAS integrity under ionospheric scintillation
    A. K. Sun and J. Lee
    Nov 2025
    Special Session for Early-Career Researchers at 2025 IPNT Conference, Jeju, Korea
  2. SCPNT
    Error modeling framework for GBAS integrity under ionospheric scintillation
    A. K. Sun, S. Pullen, and J. Lee
    Oct 2025
    Invited student presentation at 2025 SCPNT Symposium, Menlo Park, CA

2024

  1. AGU Fall Meeting
    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. AGU Fall Meeting
    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. ION GNSS+
    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]
    Best Presentation Award
  4. COSPAR
    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]

2023

  1. AGU Fall Meeting
    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. ION GNSS+
    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]

2021

  1. URSI GASS
    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]

2018

  1. AGU Fall Meeting
    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]