Our Experts

Journal Articles

1. Zaher M. Kassas, Nadim Khairallah, Joe J. Khalife, Chiawei Lee, Juan Jurado, Steven Wachtel, Jacob Duede, Zachary Hoeffner, Thomas Hulsey, Rachel Quirarte and RunXuan Tay (2024) “Aircraft Navigation in GNSS-Denied Environments via Radio SLAM With Terrestrial Signals of Opportunity”, IEEE Transactions on Intelligent Transportation Systems, 25(10), pp. 14164–14182. Available at: 10.1109/TITS.2024.3405908. [ITS-Irvine record]
2. Joe J. Khalife and Zaher Zak M. Kassas (2019) “Optimal sensor placement for dilution of precision minimization via quadratically constrained fractional programming”, IEEE Transactions on Aerospace and Electronic Systems, 55(4), pp. 2086–2096. Available at: 10.1109/taes.2018.2879552. [ITS-Irvine record]
3. Mahdi Maaref, Joe Khalife and Zaher M. Kassas (2019) “Lane-level localization and mapping in GNSS-Chal­lenged environments by fusing lidar data and cellular pseudoranges”, IEEE Transactions on Intelligent Vehicles, 4(1), pp. 73–89. Available at: 10.1109/tiv.2018.2886688. [ITS-Irvine record]
4. Joe Khalife, Kimia Shamaei and Zaher M. Kassas (2018) “Navigation with cellular CDMA Signals—Part I: Signal modeling and software-defined receiver design”, IEEE Transactions on Signal Processing, 66(8), pp. 2191–2203. Available at: 10.1109/tsp.2018.2799167. [ITS-Irvine record]

Conference Papers

1. Joshua J. Morales, Joe Khalife, Ulices Santa Cruz and Zaher M. Kassas (2019) “Orbit modeling for simultaneous tracking and navigation using LEO satellite signals”, in Proceedings of the 32nd international technical meeting of the satellite division of the institute of navigation (ION GNSS+ 2019). Institute of Navigation, pp. 2090–2099. Available at: 10.33012/2019.17029. [ITS-Irvine record]
2. Joe Khalife and Zaher M. Kassas (2019) “Assessment of differential carrier phase measurements from orbcomm LEO satellite signals for opportunistic navigation”, in Proceedings of the 32nd international technical meeting of the satellite division of the institute of navigation (ION GNSS+ 2019). Institute of Navigation, pp. 4053–4063. Available at: 10.33012/2019.17031. [ITS-Irvine record]
3. Mahdi Maaref, Joe Khalife and Zak M. Kassas (2018) “Integrity monitoring of LTE signals of opportunity-based navigation for autonomous ground vehicles”, in Proceedings of the 31st international technical meeting of the satellite division of the institute of navigation (ION GNSS+ 2018). Institute of Navigation, pp. 2456–2466. Available at: 10.33012/2018.16093. [ITS-Irvine record]
4. Joe J. Khalife and Zaher M. Kassas (2017) “Evaluation of relative clock stability in cellular networks”, in Proceedings of the 30th international technical meeting of the satellite division of the institute of navigation (ION GNSS+ 2017). Institute of Navigation, pp. 2554–2559. Available at: 10.33012/2017.15221. [ITS-Irvine record]
5. Joe Khalife, Sonya Ragothaman and Zaher M. Kassas (2017) “Pose estimation with lidar odometry and cellular pseudoranges”, in 2017 IEEE intelligent vehicles symposium (IV). IEEE, pp. 1722–1727. Available at: 10.1109/ivs.2017.7995956. [ITS-Irvine record]
6. Joshua J. Morales, Joe Khalife and Zaher M. Kassas (2017) “Collaborative autonomous vehicles with signals of opportunity aided inertial navigation systems”, in Proceedings of the 2017 international technical meeting of the institute of navigation. Institute of Navigation, pp. 805–818. Available at: 10.33012/2017.14896. [ITS-Irvine record]
7. Joe Khalife and Zaher M. Kassas (2016) “Characterization of sector clock biases in cellular CDMA systems”, in Proceedings of the 29th international technical meeting of the satellite division of the institute of navigation (ION GNSS+ 2016). Institute of Navigation, pp. 2281–2285. Available at: 10.33012/2016.14731. [ITS-Irvine record]
8. Joshua J. Morales, Joe J. Khalife and Zaher M. Kassas (2016) “GNSS vertical dilution of precision reduction using terrestrial signals of opportunity”, in Proceedings of the 2016 international technical meeting of the institute of navigation. Institute of Navigation, pp. 664–669. Available at: 10.33012/2016.13463. [ITS-Irvine record]

Other

1. Z.M. Kassas, J.J. Morales, K. Shamaei and J. Khalife (2017) “LTE steers UAV: No GPS? No problem! Signals of opportunity work in challenged environments”, GPS World, pp. 18–25. Available at: https://www.gpsworld.com/lte-cellular-steers-uav-signals-of-opportunity-work-in-challenged-environments/. [Other] [ITS-Irvine record]