Sreejith Vidhyadharan Nair

Unmanned Aerial Systems
– Airspace Integration and Policy Development
– Counter-Unmanned Aerial Systems 
– Swarm Intelligence and Multi-Agent Systems
– Advanced Air Mobility and Urban Air Mobility 
Wireless Communication
– Wireless Sensor Networks
– Mobile Ad-hoc Networks
– Space Communication
Cyber Physical system
Affective Computing

Peer-Reviewed Publications (Selected List) Full list(Google Scholar)

Prasad Pothana, Paul Snyder, Sreejith Vidhyadharan, Michael Ullrich, Jack Thornby, "Air Traffic Trends and UAV Safety: Leveraging ADS-B for Predictive Risk Mitigation", was accepted in Aerospace (ISSN 2226-4310) on March 2025

Marielle Korringa,Paul Snyder, Michael Ullrich, Sreejith Vidhyadharan, Robbie Lunnie, "Optimal Air Corridor Design for Efficient Integration of AAM Vehicles into the NAS", Accepted to present in 25th Integrated Communications, Navigation, and Surveillance Conference (ICNS)-April 2025, Brussels, Belgium

Michael Ullrich, Sreejith Vidhyadharan, Paul Snyder, "Assessing UAV Saturation Limits in Reserved Airspace for Safe Coexistence with Crewed Aircraft", Accepted to present in 25th Integrated Communications, Navigation, and Surveillance Conference (ICNS)-April 2025, Brussels, Belgium

Ammar Khodja, Dalia, Ryan S. Adams, Sreejith Vidhyadharan, and Ronald A. Fevig. "A Novel TDMA Based Protocol Stack With Virtual Circuit and Priority Queues for Multi-Class Wireless Traffic in a Space Environment." Accepted for presentation at IEEE WiSES, 2024 

Ammar Khodja, Dalia, Sreejith Vidhyadharan, Ryan S. Adams, Ronald A. Fevig, and Maleeha Altaf. "Development of a Priority Queue-Based Protocol Stack for Handling Different Traffic Classes." Presented at the 2024 International Symposium on Networks, Computers and Communications (ISNCC'24), 2024 

Ullrich, Michael, Prasad Pothana, Jack Thornby, Paul Snyder, and Sreejith Vidhyadharan. "Determining the Saturation Point for UAV Operations in Airport Environments: A Probabilistic Approach." In 2024 Integrated Communications, Navigation and Surveillance Conference (ICNS), pp. 1-11. IEEE, 2024.

Piyush Nikam, Dhruv Shah, Aryan Sahu, Neena Goveas, and Sreejith Vidhyadharan, "Enhancing Real-Time Training of Heterogeneous UAVs Using a Federated Teacher-Student Self-Training Framework" -IEEE Military Communications Conference (MILCOM) Nov-2023

Skurdal, Anton, Youness Arjoune, Niroop Sugunaraj, Shree Ram Abayankar Balaji, Sreejith Vidhyadharan Nair, Prakash Ranganathan, and Burton Johnson. "Correlation of Egg counts, Micro-nutrients, and NDVI Distribution for Accurate Tracking of SCN Population Density Detection." In 2023 IEEE International Conference on Electro Information Technology (eIT), pp. 203-210. IEEE, 2023.

Prasad Pothana, Joshua Joy, Paul Snyder and Sreejith Vidhyadharan, "UAS Air-Risk Assessment In and Around Airports", 23rd Integrated Communications, Navigation, and Surveillance Conference (ICNS)-April 2023 (Received the 2nd best student paper award)

Sreejith Vidhyadharan, Paul Snyder, Mayank Anchlia, and Pulkil Agrawal “Data Routing in UAV Networks with Multiple Data Sources using Steiner Tree”, 22nd International Conference on Next Generation Wired/Wireless Networks and Systems NEW2AN 2022, Dec-2022

Mishra, Eti, Piyush Nikam, Sreejith V, and Reena Cheruvalath. "An affect-based approach to detect collective sentiments of film audience: Analyzing emotions and attentions." Acta Psychologica 230 (2022): 103736.

Arjoune, Youness, Niroop Sugunaraj, Sai Peri, Sreejith V. Nair, Anton Skurdal, Prakash Ranganathan, and Burton Johnson. "Soybean cyst nematode detection and management: a review." Plant Methods 18, no. 1 (2022): 1-39.

Barajas-Olalde, César, Saurabh A. Chimote, Jordan Krueger, Donald C. Adams, Justin T. Kovacevich, Sreejith V Nair, Mohamed Elsaharty, and Mark Askelson. "Toward real-time detection of pipelines and spills." In Sixth International Conference on Engineering Geophysics, Virtual, 25–28 October 2021, pp. 316-320. Society of Exploration Geophysicists, 2021.

Shamanth Nagarajua, Sreejith V., Lucy J. Gudino, Bhushan V. Kadamb, Ramesha C. K., Joseph Rodrigues, "Hybrid area exploration-based mobility-assisted localization with sectored antenna in wireless sensor networks" - Published in International Journal of Communication systems, Wiley

Shamanth Nagaraju, Nipun Sood, Jasmine G. Chandran, Sreejith V., Lucy J.Gudino, "Multiple Token based Neighbor Discovery for Directional Sensor Networks"- Published in Electronics and Telecommunications Research Institute Journal (ETRIJ), Wiley

White Papers, Posters (Selected List)

Nair, Preeti, Marcos Fernandez-Tous, and Sreejith Vidhyadharan. "A Space Propulsion Concept Based on Inertial Confinement for Nuclear Fusion Using a Polywell Geometry." Accepted to present at Nuclear and Emerging Technologies for Space (NETS 2025).

Adams, Ryan, Ronald Fevig, Sreejith Vidhyadharan Nair, Dalia Ammar Khodja, and Maleeha Altaf. "SPRINT: Space-based Prioritized Real-time Inter-satellite Network Technology." Presented at Small Satellite Conference -2024

Fevig, Ronald Adrey, Ryan Adams, Sreejith Vidhyadharan Nair, Dalia Ammar Khodja and Maleeha Altaf. "Testing SPRINT in the Near-Space Environment." Academic High Altitude Conference, vol. 2024, no. 2, 2024.

Korringa, Marielle, Paul Snyder, Michael Ullrich, and Sreejith Vidhyadharan. "Vertiport and Route Planning for AAM Vehicle." Presented at UND RIAS Advisory Board Networking Event, 2024.

Pothana, Prasad, Michael Ullrich, Sreejith Vidhyadharan, and Paul Snyder. "Designing Safe Airspace: The Impact of sUAS Handling Characteristics on Right-of-Way Proposals." Presented at UND RIAS Advisory Board Networking Event, 2024.

Hagberg, Jacob, Prasad Pothana, Akshay Ram Ramchandra, Paul Snyder, and Sreejith Vidhyadharan Nair. "Acoustic Detection of UAS With Edge Analytics." UAV Summit, 2023.

Sreejith V., Sarang Deshpande, Surendra Sharma, Krishna M. Sivalingam, S. A. V. Satyamurty, Baldev Raj “Throughput Analysis in a WSN Grid Deployment"- IWDS, IIT Kanpur, Nov 2010 (Presented in Workshop)

Stansbury, Richard, Paul Snyder, Scott Burgess, Leslie Martin, Sreejith Vidhyadharan Nair, Jered Lease, Kristy Kiernan, Erin Roesler, Robbie Lunnie, Neeraj Naik, Fadjimata Issoufou, and Gurvir Bawa. "A37: UAS Standards Tracking, Mapping, and Analysis Final Report." Final Report, August 9, 2022. Available: https://www.assureuas.org/projects/standard-tracking-mapping-analysis/

Askelson, Mark, Tom Haritos, Sreejith Vidhyadharan Nair, Naima Kaabouch, Hever Moncayo, Henry Cathey, and Evan Arnold. "A45-Shielded UAS Operations: Detect and Avoid (DAA): Final Report." Final Report, September 2, 2024. Available: https://www.assureuas.org/projects/shielded-uas-operations/

Snyder, Paul R., Naima Kaabouch, Sreejith Vidhyadharan Nair, Joe Vacek, Prasad Pothana, Michael Ullrich, Leslie Martin, James Moe, M. Ilhan Akbas, Kristine Kiernan, Scott Burgess, John Thompson, Mark Ewing, and Shawn Keshmiri. "Propose UAS Right-of-Way Rules for Unmanned Aircraft Systems (UAS) Operations and Safety Recommendations: Final Report." Final Report, August 7, 2024. Available: https://www.assureuas.org/projects/right-of-way-rules/

Stansbury, R., Nair,Sreejith Vidhyadharan., (2022). White Paper - IEEE UAS Standards Tracking and Standards Development Related Research Needs. IEEE.

Ph.D. - Mobile Wireless Sensor Networks - Birla Institute for Technology and Science- Pilani, India
Thesis Title: Development of Network Architecture and Protocol Stack for Mobile Wireless Sensor Networks

ME - Computer science and Engineering - Anna University (REC campus), Chennai, India
Thesis Title: Data classification and pattern recognition using SVM for inertial sensor data

BE - Computer Science and Engineering - MS University, Tamil Nadu, India

19+ years of Teaching and Research experience

Career History

• Research Assistant Professor, Department of Aviation, John D. Odegard School of Aerospace Sciences, University of North Dakota(Current)
• Post-Doctoral Fellow, Research Institute for Autonomous Systems, University of North Dakota
• BITS-Pilani Goa Campus, India (Faculty, Dept of Computer Science)
• Indian Institute of Technology - Madras (IIT-M), Chennai, India (Project Associate, Dept of Computer Science and Engineering)
• LMCST, Trivandrum (Faculty, Dept of Computer Science)

• "Advancing Airspace Safety and Security using UAV Risk Analysis and Acoustic Counter-UAS" – Keynote talk at IEEE Signal Processing, Informatics, Communication, and Energy Systems (SPICES) 2024.
• Presented the paoer titled "A Novel TDMA Based Protocol Stack With Virtual Circuit and Priority Queues for Multi-Class Wireless Traffic in a Space Environment." -12th IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE 2024), Florida, USA, December 2024
• "Defending Critical Infrastructure from Small-UAS: Counter UAS Implementation Challenges and Future Trends" – Keynote talk at the International Conference on Advances in Management, Energy, Engineering & Technology (ICAMEET 2024), Trivandrum, India.
• "Unmanned Aerial System: Current and Future Research" – Invited talk at IIIT Kottayam for researchers and faculty, August 2024.
• Presented the paper titled "Enhancing Real-Time Training of Heterogeneous UAVs Using a Federated Teacher-Student Self-Training Framework" -IEEE MILCOM, Boston, USA  Nov-2023
• Invited talk titled "Developing Counter-unmanned Aircraft Systems (C-UAS) using Smart Acoustic Sensors", in the panel -The Latest in Defense & Counter-UAS Technologies and Regulations, at UAV summit, Grand Forks, USA, Oct-2023
• Presented the paper titled "UAS Air-Risk Assessment In and Around Airports" 24th ICNS, Herndon, Virginia, USA, April-2023
• Invited talk titled "Building An Intelligent Unmanned Aerial Vehicle(UAV) Sensing System and its Limitation" at UT Admin of DNH and DD, GPD, Daman, India, Virtual, Dec 2022
• Invited talk titled "Research Using Autonomous Systems: Data Needs" at Pacific Northwest Gigapop Advisory Council Meeting with Dr. Mark Askelson, Virtual, Oct 2022
• Invited talk titled "Unmanned Aerial Systems with Intelligent Edge and its Challenges" at Virtual International Conference on Futuristic Communication and Network Technologies (VICFCNT-2021), VIT-Chennai, Dec-2021
• Keynote Talk titled "A Hierarchical Decision Making Architecture with Unmanned Aerial Vehicles for Remote Sensing Applications" at Fourth International Conference on Microelectronics, Signals & Systems (ICMSS'21), Nov -2021.
• Inaugural/Keynote Talk titled “Edge Analysis: Moving computation from cloud to Ground” at Don Bosco Binghamton Big Data Online International Conference  (DB3D 21), on Oct-2021.

• Disaster Preparedness and Emergency Response Phase IV (Funding Agency/Source: FAA) - ongoing
• Hybrid Onboard and Ground-Based Sensor Integration for ACAS X DAA  (Funding Agency/Source: FAA / Sagetech) - ongoing
• Analyze Drone Traffic (Funding Agency/Source: FAA) - ongoing
• Conduct Safety Risk Management Analysis on sUAS DAA Systems(Funding Agency/Source: FAA) - ongoing
• Validate SUAS Well Clear Requirements (Funding Agency/Source: FAA) - ongoing
• Space-Based Wireless Network Protocol Stack Supporting MAC-Level Dynamic Resource Allocation for Real-Time Prioritized Data Classes (Funding Agency/Source: NASA) - ongoing
• Identify Models for Advanced Air Mobility (AAM)/Urban Air Mobility (UAM) Safe Automation (Funding Agency/Source: FAA) - ongoing
• Design and Development of an Interactive Augmented Reality Platform to Identify and Track Crewed and Uncrewed Aircraft (Funding Agency/Source: JDOSAS Research Seed Grant Program) - ongoing
• Developing a Digital-twin test-bed for UAV Swarm: From Concept to Flight (Funding Agency/Source: JDOSAS Research Seed Grant Program) - ongoing
• Developing an Integrated Multi-Agent System for Enhanced UAV Detection and Countermeasures (Funding Agency/Source: JDOSAS Research Seed Grant Program) - ongoing
• Propose UAS Right-of-Way Rules for Unmanned Aircraft Systems (UAS) Operations and Safety Recommendations (Funding Agency/Source: FAA) - Completed
• Shielded UAS Operations (DAA) (Funding Agency/Source: FAA) - Completed
• UAS Standards Identification, Tracking, and Mapping (Funding Agency/Source: FAA) - Completed
• Safety Risks and Mitigations for UAS Operations On and Around Airports (Funding Agency/Source: FAA) - Completed
• UAS Safety Case Development, Process Improvement, and Data Collection (Funding Agency/Source: FAA) - Completed
• Small UAS Detect and Avoid Requirements Necessary for Limited Beyond Visual Line of Sight (BVLOS) Operations (Funding Agency/Source: FAA) - Completed
• Hardware Grant for developing acoustic based C-UAS system using Edge Analysis, (Funding Agency/Source: UND-VPRED) - Completed
• Simulating Autonomous Close-Proximity Spacecraft Interactions in a Microgravity Environment(Funding Agency/Source: UND- Aerospace) - Completed
• Northern Border Security (Role as a Postdoc)- (Funding Agency/Source: UND- VPRED Seed grant) - Completed
• Augmented Reality for the HMMWV (Role as a Postdoc) (Funding Agency/Source: AMG/DoD) - Completed