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The 2022 International Workshop on ATM/CNS (IWAC2022) was successfully held on October 25 to 27, 2022 with the collaboration of the Japan Society for Aeronautical and Space Sciences (JSASS). The event was held in hybrid format due to the COVID-19 pandemic and attracted about 200 participants from 13 countries around the world. There were 56 presentations in the forms of plenary, invited, and technical sessions. An exhibition was also held in parallel to the workshop.
ENRI has changed the workshop name from EIWAC to IWAC to strengthen the cooperation with the academic community through joining hands with JSASS. Nine papers recognized for outstanding quality were nominated to the Transactions of the Japan Society for Aeronautical and Space Sciences, a journal published by JSASS.
We sincerely appreciate your valuable contribution with high-quality presentations, papers, and fruitful discussions during the IWAC. We look forward to seeing you again at our next workshop.
Date Oct. 25~27, 2022
Venue Nakano Central Park Conference (Tokyo)
Selected Papers of IWAC2022

Nine high-quality papers were selected and nominated for the Transactions of the Japan Society for Aeronautical and Space Sciences published by JSASS.

~ Best Paper Award ~



Paper title

Christian Aveneau

Direction de la Technique et de l’Innovation

Potential operational consequences of the use of ACAS Xu in controlled airspace

~ Best Student Paper Award ~



Paper title

Patric Fol

Zurich University of Applied Sciences

Identification and Operational Impact Analysis of GNSS RFI Based on Flight Crew Reports and ADS-B Data


- Program and Papers -
*Conference program (final)
Day1 October 25th Tuesday [ Hall A+B+C ]
  Keynote Speeches
  Chair: Sonosuke Fukushima (Electronic Navigation Research Institute, MPAT)
K-1  R&D Activities through Global Collaboration
 Tatsuyuki Shimazu
 Director General, ENRI
K-2  Global Positioning and Communication Network Accelerate Innovation in
 Aerospace Technology

 Kojiro Suzuki
 President, JSASS
 Keynote Speeches
 Chair: Mark Brown (Electronic Navigation Research Institute, MPAT)
K-3  Decarbonization and the Contribution of CARATS
 Koji Takahashi
 Director-General, Air Navigation Services Department, JCAB
K-4  Information-Centric Aviation: Global Opportunities for 2035.
 Steve Bradford
 Chief Scientist, Office of NextGen, FAA
K-5  CNS/ATM Resilience and Environmental Challenges
 Stephen Creamer
 Director, Air Navigation Bureau, ICAO
K-6  Delivering the Digital European Sky
 Andreas Boschen
 Executive Director, SESAR 3 JU
K-7  Recent developments in European and International Aviation Standardisation
 Anna von Groote
 Director General, EUROCAE
K-8  Research Projects for Achieving Carbon Neutrality at National Institute of
 Maritime, Port and Aviation Technology (MPAT)

 Yoshiaki Kuriyama
 President, MPAT

Day2 October 26th Wednesday [ Hall A ]
 Technical Session 1 Communication and Navigation Systems
 Chair: Akiko Kohmura(Electronic Navigation Research Institute, MPAT)
T1-1-A  A Secure Ground Handover Protocol for LDACS
 Nils Mäurer
 German Aerospace Center (DLR)
T1-2-I  LDACS Validation Activity in ENRI and Cooperation with DLR
 Kazuyuki Morioka
 Electronic Navigation Research Institute, MPAT (ENRI)
T1-3-I  Observation of sporadic E using aeronautical navigation radio for instrument
 landing system

 Shumpei Tabuchi
 University of Electro-Communications
 Technical Session 4 Radio Propagation Analysis
 Chair: Junichi Honda (Electronic Navigation Research Institute, MPAT)
T4-1-A  Air-Ground SWIM Demonstration over Extended AeroMACS - Tracking,
 antenna placement and handover evaluations -

 Kazuyuki Morioka
 Electronic Navigation Research Institute, MPAT (ENRI)
T4-2-A  On the Imaging of Large Antenna Array Navigation Systems
 Robert Geise
 Technische Universität Braunschweig
T4-3-A  Investigating the Impact of Dynamic Scatterers on Transmission Channels - A Case Study of the Propeller Aircraft Airbus A400M in the context of the
 Instrument Landing System

 Altan Akar
 Technische Universität Braunschweig
 Technical Session 7 Surveillance Systems
 Chair: Junichi Naganawa (Electronic Navigation Research Institute, MPAT)
T7-1-A  Airport Runway Area Segmentation in PolSAR Image Based D-Unet Network
 Yufan Liang
 Civil Aviation University of China
T7-2-A  Preliminary study on multilateration Performance for El Salvador’s
 international Airport

 Lizardo Arias
 University of El Salvador

Day2 October 26th Wednesday [ Hall B ]
 Technical Session 2 Airport 1
 Chair: Yoichi Nakamura (Electronic Navigation Research Institute, MPAT)
T2-1-A  Variable Taxi-Out Time Prediction Based on Machine Learning with
 Interpretable Attributes

 Yixiang Lim
 Nanyang Technological University
T2-2-A  Synthetic Training of Neural Networks for Semantic Segmentation of LiDAR
 Point Clouds

 Michael Schultz
 Universität der Bundeswehr München
T2-3-A  Predicting Passenger Flow at Charles De Gaulle Airport using Dense Neural

 Alexis Brun
 Ecole Nationale de l’Aviation Civile
 Technical Session 5 Airport 2
 Chair: Midori Tanino (Federal Aviation Administration)
T5-1-A  Air-rail timetable synchronization for a seamless passenger journey
 Clara Buire
 Ecole Nationale de l'Aviation Civile
T5-2-A  Machine Learned Prediction of Runway Configuration Transition Times for
 Capacity Analysis

 Lam Jun Guang Andy
 Saab-NTU Joint Research Lab
T5-3-A  Towards Greener Airport Surface Operations: A Reinforcement Learning
 Approach for Autonomous Taxiing

 Sameer Alam
 Nanyang Technological University
 Invited Speeches
 Chair: Mark Brown (Electronic Navigation Research Institute, MPAT)
I-1  JAL's DX initiatives at the Innovation Lab
 Sachiko Hiramatsu
 Japan Airlines Co.,Ltd
I-2  4D Trajectory Based Operations
 Thierry Harquin
I-3  Wake Energy Retrieval: an environmental opportunity for aviation
 Philippe Masson
 Technical Session 8 Remotely Piloted Aircraft Systems
 Chair: Hamsa Balakrishnan (Massachusetts Institute of Technology)
T8-1-A  Potential operational consequences of the use of ACAS Xu in controlled

 Christian Aveneau
 Direction des Services de la Navigation Aérienne
T8-2-I  Risk-based Approach to UAS Traffic Management System Development in
 South Korea

 Younsil Kim
 Korea Aerospace Research Institute

Day2 October 26th Wednesday  [ Hall C ]
 Technical Session 3 Global Navigation Satellite Systems
 Chair: Keisuke Hosokawa (University of Electro-Communications)
T3-1-A  Identification and Operational Impact Analysis of GNSS RFI Based on Flight
 Crew Reports and ADS-B Data

 Patric Fol
 Zurich University of Applied Sciences
T3-2-A  Impact of GNSS Outage on Mid-Air Collision Risk
 Benoit Figuet
 Zurich University of Applied Sciences
T3-3-A  Preliminary Evaluations of User Positioning Errors in DFMC SBAS Demo at
 Thailand Location

 Somkit Sophan
 King Mongkut’s Institute of Technology Ladkrabang
 Technical Session 6 Air Traffic Management 1
 Chair: Akinori Murata (Electronic Navigation Research Institute, MPAT)
T6-1-A  Considering TMA holding uncertainty into in-flight trajectory optimisation
 David de la Torre Sangrà
 Universitat Politècnica de Catalunya
T6-2-A  A Study of Robustness Between Two Strategic 4D Trajectory Plannings
 Paveen Juntama
 Ecole Nationale d'Aviation Civile
T6-3-A  Slot allocation in a multi-airport system under flying time uncertainty
 Chang Liu
 Nanjing University of Aeronautics and Astronautics
 Technical Session 9 Air Traffic Management 2
 Chair: Daniel Delahaye (Ecole Nationale de l'Aviation Civile)
T9-1-A  Dynamic Airborne Delay Buffer Selection for Efficient Air Traffic Flow

 Adriana Andreeva-Mori
 Japan Aerospace Exploration Agency
T9-2-A  Non-CO2 Market-Based Incentives Towards Robust Climate Optimal Aircraft

 Abolfazl Simorgh
 Universidad Carlos III de Madrid
T9-3-A  Research on CDO Trajectory Optimization Based on Cost Index using Gaussian
 Pseudospectral Method

 Gong Fengxun
 Civil Aviation University of China

Day3 October 27th Thursday  [ Hall A ]
 Technical Session 10 Urban Air Mobility / Human Factor
 Chair: Naoki Matayoshi (Japan Aerospace Exploration Agency)
T10-1-A  Automatic speech recognition in noise polluted cockpit environments for
 monitoring the approach briefing in commercial aviation

 Jonas Füllgraf
 Technische Universität Braunschweig
T10-2-I  Withdrawn
T10-3-I  Withdrawn

Day3 October 27th Thursday  [ Hall B ]
 Special Session SWIM Introductory Talk and Panel Discussion
 Chair: Lu Xiaodong, Navinda Kithmal Wickramasinghe (Electronic Navigation
     Research Institute, MPAT)
T14-1-A  SWIM Based Trajectory Coordination to Achieve Strategic Planning and
 Collaborative Decision Making

 Xiaodong Lu
 Electronic Navigation Research Institute, MPAT
T14-2-I  Multi-Regional Trajectory Based Operations (MR TBO) Demonstrations – 
 Selected Lessons Learned

 Nabil Sandhu
 Federal Aviation Administration
T14-3-I  Validating Trajectory-Based Operations (TBO) Operational Values and

 Daphne Cheong
 Civil Aviation Authority of Singapore
 Organized Session 1 Electromagnetic Analysis on Aeronautics
 Chair: Naruto Yonemoto (Electronic Navigation Research Institute, MPAT)
O1-1  [Invited]
 The Difference between Conventional and Doppler VOR – Some Missing

 Robert Geise
 Leipzig University of Applied Science
O1-2  [Invited]
 Large-scale Numerical Evaluation of Cabin-to-Exterior Propagation
 Characteristics for Sub-6GHz/5G Using Small Aircraft Model

 Takashi Hikage
 Hokkaido University
O1-3  Hybrid Electromagnetic Analysis Methods Suitable for Airport Surfaces in the VHF Band
 Atsushi Kezuka
 Electronic Navigation Research Institute, MPAT
 Organized Session 2 Urban Air Mobility
 Chair: Ryota Mori (Electronic Navigation Research Institute,MPAT)
O2-1  [Invited]
 Cross fertilization between ATM and UTM
 Daniel Delahaye
 Ecole Nationale de l’Aviation Civile
O2-2  [Invited]
 Traffic Management Challenges in Advanced Air Mobility
 Hamsa Balakrishnan
 Massachusetts Institute of Technology
O2-3  Estimation Methods of the Visual Flight Rules Planned Route for Sharing
 Preflight Information with Urban Air Mobility

 Daichi Toratani
 Electronic Navigation Research Institute, MPAT
O2-4  [Invited]
 An Overview of Advanced Air Mobility Research at NASA
 Marcus Johnson, Jeffrey Homla
 NASA Ames Research Center

Day3 October 27th Thursday  [ Hall C ]
 Technical Session 11 Air Traffic Management 3
 Chair: Akinori Harada (Kochi University of Technology)
T11-1-A  Exploiting spatio-temporal partial separability of large-scale airspaces
 Julien Lavandier
 Ecole Nationale de l’Aviation Civile
T11-2-A  Multi-Aircraft Trajectory Deformation for Uncertain Thunderstorm Avoidance and Conflict Resolution
 Eduardo Andrés
 Universidad Carlos III de Madrid
T11-3-A  A Multi-task Learning Approach for Facilitating Dynamic Airspace Sectorization
 Wei Zhou
 Nanyang Technological University
 Technical Session 12 Air Traffic Management 4
 Chair: Hiroko Hirabayashi (Electronic Navigation Research Institute, MPAT)
T12-1-I  Free Route Airspace Implementation Efforts in the Latin America and Caribbean Region through Collaboration
 Midori Tanino
 Federal Aviation Administration
T12-2-A  Demand Assessment for Climate Optimal Aircraft Trajectories at Network Scale
 Fateme Baneshi
 Universidad Carlos III de Madrid
T12-3-A  A Deep Neural Network Approach for Prediction of Aircraft Top of Descent
 Qing Cai
 Nanyang Technological University
 Technical Session 13 Space Weather
 Chair: Shinji Saitoh (Electronic Navigation Research Institute, MPAT)
T13-1-A  Anomalous Long-range Propagation of VHF NAV signals by the sporadic E
 Keisuke Hosokawa
 University of Electro-Communications
T13-2-I  DFMC GBAS testbed at Ishigaki, Japan
 Susumu Saito
 Electronic Navigation Research Institute, MPAT
T13-3-I  Recent domestic activities and NICT’s efforts toward the advancement of
 space weather forecast

 Takuya Tsugawa
 National Institute of Information and Communications Technology