64. Protecting the Skies: GNSS-less Aircraft Navigation with Terrestrial Cellular Signals of Opportunity 
Z. Kassas, A. Abdallah, C. Lee, J. Jurado, S. Wachtel, J. Duede, Z. Hoeffner, T. Hulsey, R. Quirarte, and R. Tay
ION Global Navigation Satellite Systems Conference, Sep. 19-23, 2022, Denver, CO, accepted

63. Observability Analysis of Opportunistic Receiver Localization with LEO Satellite Pseudorange Measurement
R. Sabbagh and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 19-23, 2022, Denver, CO, accepted

62. Joint Detection and Tracking of Unknown Beacons for Navigation with 5G Signals and Beyond
M. Neinavaie and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 19-23, 2022, Denver, CO, accepted

61. Blind Receiver for LEO Beacon Estimation with Application to UAV Carrier Phase Differential Navigation
S. Kozhaya and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 19-23, 2022, Denver, CO, accepted

60. Robust Navigation for Urban Air Mobility via Tight Coupling of GNSS with Terrestrial Radionavigation and Inertial Sensing
R. Tenney and T. Humphreys
ION Global Navigation Satellite Systems Conference, Sep. 19-23, 2022, Denver, CO, accepted

59. Cooperative Navigation Strategy for Connected Autonomous Vehicle Operating at Smart Intersection
R. Khan, A. Hanif, Q. Ahmed
10th IFAC International Symposium on Advances in Automotive Control, 2022

58. An interacting multiple model estimator of LEO satellite clocks for improved positioning
N. Khairallah and Z. Kassas
IEEE Vehicular Technology Conference, Helsinki, Finland, accepted 

57. Multipath mitigation of 5G signals via reinforcement learning for navigation in urban environments
A. Abdallah, M. Orabi, and Z. Kassas
IEEE Vehicular Technology Conference, 2022, accepted 

56. Demo: I am not afraid of the GPS jammer: exploiting cellular signals for accurate ground vehicle navigation in a GPS-denied environment
A. Abdallah, Z. Kassas, and C. Lee
ACM Workshop on Automotive and Autonomous Vehicle Security, 2022, accepted

55. I am not afraid of the GPS jammer: resilient navigation via signals of opportunity in GPS-denied environments
Z. Kassas, J. Khalife, A. Abdallah, and C. Lee
IEEE Aerospace and Electronic Systems Magazine, vol. 37, no. 7, 2022

54. The first carrier phase tracking and positioning results with Starlink LEO satellite signals
J. Khalife, M. Neinavaie, and Z. Kassas
vol. 58, no. 2, 2022

53. Acquisition, Doppler tracking, and positioning with Starlink LEO satellites: first results
M. Neinavaie, J. Khalife, and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, vol. 58, no. 3, 2022

52. On the Cybersecurity of Traffic Signal Control System With Connected Vehicles
Y. Feng, S. Huang, W. Wong, Q. A. Chen, Z. Mao, and H. Liu,
IEEE Transactions on Intelligent Transportation Systems, 2022 

51. Towards Driving-Oriented Metric for Lane Detection Models
T. Sato, and Q. A. Chen
Proceedings of IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2022 

50. Opportunistic navigation using sub-6 GHz 5G downlink signals: a case study on a ground vehicle
A. Abdallah and Z. Kassas
Proceedings of European Conference on Antennas and Propagation, 2022, accepted.  

49. Received power characterization of terrestrial cellular signals on high altitude aircraft
Z. Kassas., A. Abdallah, J. Khalife, C. Lee, J. Jurado, S. Wachtel, J. Duede, Z. Hoeffner, T. Hulsey, R. Quirarte, and R. Tay
Proceedings of IEEE Aerospace Conference, 2022, accepted  

48. Cognitive opportunistic navigation in private networks with 5G signals and beyond
M. Neinavaie, J. Khalife, and Z. Kassas.
IEEE Journal of Selected Topics in Signal Processing, vol. 16, no. 1, 2022

47. E-Scooter Sharing and Bikesharing Systems: An Individual-level Analysis of Factors Affecting First Use and Use Frequency
G. Blazanin, A. Mondal, K. Asmussen, and C. Bhat
Transportation Research Part C, Vol. 135, 103515, 2022  

46. Adoption of Partially Automated Vehicle Technology Features and Impacts on Vehicle Miles of Travel (VMT)
K. Asmussen, A. Mondal, and C. Bhat
Transportation Research Part A, 2022

45. Carrier-phase and IMU based GNSS spoofing detection for ground vehicles
Z. Clements, J. Yoder, and T. Humphreys
Proceedings of the ION International Technical Meeting, 2022  

44. A Finite-Sampling, Operational Domain Specific, and Provably Unbiased Connected and Automated Vehicle Safety Metric
B. Wang, L. Capito, U. Ozguner, and K. Redmill
IEEE Transactions on Intelligent Transportation Systems, accepted 3/14/2022

43. E-Scooter Sharing and Bikesharing Systems: An Individual-level Analysis of Factors Affecting First Use and Use Frequency
G. Blazanin, A. Mondal, K. Asmussen, and C. Bhat
accepted for publication in Transportation Research Part C (forthcoming)

42. Enter LEO on the GNSS stage: navigation with Starlink satellites
Z. Kassas, M. Neinavaie, J. Khalife, N. Khairallah, J. Haidar-Ahmad, S. Kozhaya, and Z. Shadram
Inside GNSS Magazine, December 2021, cover article  

41. A Formal Characterization of Black-Box System Safety Performance with Scenario Sampling
B. Wang, L. Capito, U. Ozguner, and K. Redmill
IEEE Robotics and Automation Letters, accepted  

40. Model-based Decomposition and Backtracking Framework for Probabilistic Risk Assessment in Automated Vehicle Systems
L. Capito, K. Redmill, and U. Ozguner
American Nuclear Society 2021 International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA 2021), 2021.  

39. Ground vehicle navigation integrity monitoring for multi-constellation GNSS fused with cellular signals of opportunity
M. Jia, H. Lee, J. Khalife, Z. Kassas, and J. Seo
IEEE International Conference on Intelligent Transportation Systems, 2021, accepted 

38. A machine learning multipath mitigation approach for opportunistic navigation with 5G signals
M. Orabi, A. Abdallah, J. Khalife, and Z. Kassas
ION Global Navigation Satellite Systems Conference, 2021 

37. UAV navigation with 5G carrier phase measurements
A. Abdallah and Z. Kassas
ION Global Navigation Satellite Systems Conference, 2021

36. Comparison of neural network architectures for simultaneous tracking and navigation with LEO satellites
S. Kozhaya, J. Haidar-Ahmad, A. Abdallah, Z. Kassas, and S. Saab
ION Global Navigation Satellite Systems Conference, 2021 

35. Exploiting Starlink signals for navigation: first results
M. Neinavaie, J. Khalife, and Z. Kassas
ION Global Navigation Satellite Systems Conference, 2021

34. Universal receiver architecture for blind navigation with partially known terrestrial and extraterrestrial signals of opportunity
J. Khalife, M. Neinavaie, and Z. Kassas
ION Global Navigation Satellite Systems Conference, 2021

33. The first carrier phase tracking and positioning results with Starlink LEO satellite signals J. Khalife, M. Neinavaie, and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, accepted 

32. Cognitive opportunistic navigation in private networks with 5G signals and beyond
M. Neinavaie, J. Khalife, and Z. Kassas
IEEE Journal of Selected Topics in Signal Processing, 2021, accepted 

31. Nodal Analysis of Gauss-Markov Solutions for a Simple Free Network
B. Sluis, C. Toth
ASPRS-ILMF Annual Conference 2021, Virtual, March 29 – April 2, 2021 

30. 2-Dimensional Geometric Analysis of a Simple Free Network
Sluis, C. Toth
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume V-4-2021 

29. Between-Platforms Data Sharing to Support PNT Integrity Monitoring, Proceedings
C. Toth, D. Grejner-Brzezinska, X. Wang
Proceedings of the ION GNSS+ Meeting, St. Louis, MO, 2021 

28. Survey on Integrity Monitoring of GNSS Navigation for Ground Vehicles, Proceedings
X. Wang, C, Toth,  and D. Grejner-Brzezinska
ION GNSS+ 2021, in Proceedings of the ION GNSS+ Meeting, 2021 

27. Autonomous Vehicle Impacts on Travel-Based Activity and Activity-Based Travel
K. Dannemiller, K. Asmussen, A. Mondal, and C. Bhat
Transportation Research Board (TRB) 101st Annual Meeting, Washington D.C., 2022 

26. E-Scooter Sharing and Bikesharing Systems: An Individual-level Analysis of Factors Affecting First Use and Use Frequency
G. Blazanin, A. Mondal, K. Asmussen, and C. Bhat
Transportation Research Board (TRB) 101st Annual Meeting, Washington D.C., 2022

25. Autonomous signal-situational awareness in a terrestrial radionavigation system
R. X. Kor, P. A. Iannucci, and T. E. Humphreys
2021 International Conference on Intelligent Transportation Systems (ITSC), IEEE, 2021 

24. Analysis of OFDM signals for ranging and communications
A. M. Graff, W. N. Blount, P. A. Iannucci, J. G. Andrews, and T. E. Humphreys
Proceedings of the ION GNSS+ Meeting, St. Louis, MO, 2021 

23. Optimized bit-packing for bit-wise software-defined GNSS radio
Z. Clements, P. A. Iannucci, T. E. Humphreys, and T. Pany
Proceedings of the ION GNSS+ Meeting, St. Louis, MO, 2021 

22. Orbital war driving: Assessing transient GPS interference from LEO
D. M. LaChapelle, L. Narula, and T. E. Humphreys
Proceedings of the ION GNSS+ Meeting, St. Louis, MO, 2021 

21. A Formal Characterization of Black-Box System Safety Performance with Scenario Sampling
Bowen Wang, Linda Capito, Umit Ozguner, and Keith Redmill
IEEE Robotics and Automation Letters

20. Towards Guaranteed Safety Assurance of Automated Driving Systems with Scenario Sampling: An Invariant Set Perspective
Bowen Weng, Linda Capito, Umit Ozguner, and Keith Redmill
IEEE Transaction on Intelligent Vehicles, available in IEEE Explore Early Access

19. Methodology for Hazard Identification and Mitigation Strategies Applied to an Overtaking Assistant ADAS
Linda Capito and Keith A. Redmill
2021 IEEE Intelligent Transportation Systems Conference, Sept 19-21 2021 

18. A Modeled Approach for Online Adversarial Test of Operational Vehicle Safety
Linda Capito, Bowen Weng, Umit Ozguner, and Keith Redmill
2021 American Control Conference (ACC), 25-28 May 2021

17. Aerial vehicle protection level reduction by fusing GNSS and terrestrial signals of opportunity
M. Maaref, J. Khalife, and Z. Kassas
IEEE Transactions on Intelligent Transportation Systems, 2021, Vol. 22, Issue 9, (Special Issue on Unmanned Aircraft System Traffic Management)  

16. Experimental characterization of received 5G signals carrier-to-noise ratio in indoor and urban environments
A. Abdallah, J. Khalife, and Z. Kassas
IEEE Vehicular Technology Conference, Apr. 2021  

15. Carpe signum: seize the signal – opportunistic navigation with 5G
Z. Kassas, A. Abdallah, and M. Orabi
Inside GNSS Magazine, Vol. 16, Issue 1, Feb. 2021

14. Opportunistic navigation with Doppler measurements from Iridium Next and Orbcomm LEO satellites
M. Orabi, J. Khalife, and Z. Kassas
Proceedings of IEEE Aerospace Conference, 2021, accepted  

13. Analysis of ground vehicle integrity monitoring aided by signals of opportunity
M. Jia, J. Khal5fe, and Z. Kassas
Proceedings of ION International Technical Meeting, 2021, pp. 354-365  

11. A Systematic Framework to Identify Violations of Scenario-dependent Driving Rules in Autonomous Vehicle Software
Q. Zhang, K. Hong, Z. Zhang, Q. A. Chen, S. Mahlke, Z. Mao
ACM International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS), 2021  

11. Vision-Based Two-Factor Authentication & Localization Scheme for Autonomous Vehicles
A. Alsoliman, M. Levorato, and Q. A. Chen
ISOC AutoSec (Automotive and Autonomous Vehicle Security) Workshop at NDSS, 2021  

10. End-to-End Analysis of Adversarial Attacks to Automated Lane Centering Systems
2. Liang, R. Jiao, T. Sato, J. Shen, Q. A. Chen, and Q. Zhu
ISOC AutoSec (Automotive and Autonomous Vehicle Security) Workshop at NDSS, 2021  

9. Fooling Perception via Location: A Case of Region-of-Interest Attacks on Traffic Light Detection in Autonomous Driving
K. Tang, J. Shen, and Q. A. Chen
ISOC AutoSec (Automotive and Autonomous Vehicle Security) Workshop at NDSS, 2021  

8. Investigating Autonomous Vehicle Impacts on Individual Activity-Travel Behavior
K. Dannemiller, A. Mondal, K. Asmussen, and C. Bhat
Transportation Research Part A, Vol. 148, 2021 

7. Security of Deep Learning based Automated Lane Centering under Physical-World Adversarial Attack
T. Sato, J. Shen, N. Wang, Y. Jia, X. Lin, and Q. Chen
Usenix Security Symposium, 2021, submitted  

6. Ch. 25: Civilian GNSS Spoofing, Detection, and Recovery in Position, Navigation, and Timing Technologies in the 21st Century – Volume 1
M. Psiaki and T. Humphreys
Wiley-IEEE, 2020

5. Ch. 43: Navigation from Low Earth Orbit – Part 2: Models, Implementation, and Performance in Position, Navigation, and Timing Technologies in the 21st Century – Volume 2
Z. Kassas
Wiley-IEEE, 2020  

4. Ch. 38: Navigation with Cellular Signals of Opportunity in Position, Navigation, and Timing Technologies in the 21st Century – Volume 2
Z. Kassas
Wiley-IEEE, 2020 

3. Analysis of ground vehicle integrity monitoring aided by signals of opportunity
M. Jia, J. Khalife, and Z. Kassas
Proceedings of ION International Technical Meeting, 2021, submitted  

2. I am not afraid of the jammer: navigating with signals of opportunity in GPS-denied environments
Z. Kassas, J. Khalife, A. Abdallah, and C. Lee
Proceedings of ION GNSS+ Conference, 2020  

1. Assessing real 5G signals for opportunistic navigation
A. Abdallah, K. Shamaei, and Z. Kassas
Proceedings of ION GNSS+ Conference, 2020