Journal Papers
Opportunistic ARAIM for navigation with GNSS signals fused with terrestrial signals of opportunity: requirements and
performance
M. Jia, J. Khalife, and Z. Kassas
IEEE Transactions on Intelligent Transportation Systems, 2022, submitted
Observability analysis of receiver localization via pseudorange measurements from a single LEO satellite
R. Sabbagh and Z. Kassas
IEEE Control Systems Letters, 2022, submitted
Ad astra: simultaneous tracking and navigation with megaconstellation LEO satellites
Z. Kassas, N. Khairallah, S. Kozhaya, J. Khalife, M. Neinavaie, and J. Haidar-Ahmad
IEEE Aerospace and Electronic Systems Magazine, 2022, submitted
PINDOC: pedestrian indoor navigation system integrating deterministic, opportunistic, and cooperative functionalities
C. Jao, A. Abdallah, C. Chen, M. Seo, S. Kia, Z. Kassas, and A. Shkel
IEEE Sensors Journal, 2022, submitted
A static reduced-order multiple-model adaptive estimator for noise identification
J. Khalife and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, submitted
Cognitive detection of unknown beacons of terrestrial signals of opportunity for localization
M. Neinavaie, J. Khalife, and Z. Kassas
IEEE Transactions on Wireless Communications, 2021, submitted
Differential framework for submeter-accurate vehicular navigation with cellular signals
J. Khalife and Z. Kassas
IEEE Transactions on Intelligent Vehicles, 2021, submitted
Opportunistic autonomous integrity monitoring for enhanced UAV safety
J. Khalife, M. Maaref, and Z. Kassas
IEEE Aerospace and Electronic Systems Magazine, 2021, submitted
Flight demonstration of high altitude aircraft navigation with cellular signals
Z. Kassas, J. Khalife, A. Abdallah, C. Lee, J. Jurado, S. Wachtel, J. Duede, Z. Hoeffner, T. Hulsey, R. Quirarte, and R. Tay
IEEE Intelligent Transportation Systems Magazine, 2021, submitted
Performance-driven design of carrier phase differential navigation frameworks with megaconstellation LEO satellites
J. Khalife and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, submitted
Event-based communication strategies for collaborative inertial radio SLAM
J. Morales, J. Khalife, and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, submitted
Assessment of cellular signals of opportunity for high altitude aircraft navigation
Z. Kassas, J. Khalife, A. Abdallah, C. Lee, J. Jurado, S. Wachtel, J. Duede, Z. Hoeffner, T. Hulsey, R. Quirarte, and R. Tay
IEEE Aerospace and Electronic Systems Magazine, 2021, submitted
Urban road safety state prediction: a satellite navigation perspective
H. Lee, J. Seo, and Z. Kassas
IEEE Intelligent Transportation Systems Magazine, 2021, submitted
On the achievability of submeter-accurate UAV navigation with cellular signals exploiting loose network synchronization
J. Khalife and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2022, accepted
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, 2022, accepted
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, 2021, accepted
Information fusion strategies for collaborative inertial radio SLAM
J. Morales, J. Khalife, and Z. Kassas
IEEE Transactions on Intelligent Transportation Systems, 2021, accepted
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
A pedestrian indoor navigation system using deep-learning-aided cellular signals and ZUPT-aided foot-mounted IMUs
Abdallah, C. Jao, Z. Kassas, and A. Shkel
IEEE Sensors Journal, 2021, accepted
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
UAV waypoint opportunistic navigation in GNSS-denied environments
Y. Yang, J. Khalife, J. Morales, and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, accepted
Multipath mitigation via synthetic aperture beamforming for indoor and deep urban navigation
A. Abdallah and Z. Kassas
IEEE Transactions on Vehicular Technology, 2021, Vol. 70, Issue 9, pp. 8838–8853
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, pp. 5976–5993 (special issue)
A joint TOA and DOA acquisition and tracking approach for positioning with LTE signals
K. Shamaei and Z. Kassas
IEEE Transactions on Signal Processing, 2021, Vol. 69, pp. 2689–2705
Receiver design and time of arrival estimation for opportunistic localization with 5G signals
K. Shamaei and Z. Kassas
IEEE Transactions on Wireless Communications, 2021, Vol. 20, Issue 7, pp. 4716–4731
Autonomous integrity monitoring for vehicular navigation with cellular signals of opportunity and an IMU
M. Maaref and Z. Kassas
IEEE Transactions on Intelligent Transportation Systems, 2021, accepted
Autonomous ground vehicle path planning in urban environments using GNSS and cellular signals reliability maps: simulation and experimental results
S. Ragothaman, M. Maaref, and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, Vol. 57, Issue 4, pp. 2575–2586
Autonomous ground vehicle path planning in urban environments using GNSS and cellular signals reliability maps: models and algorithms
S. Ragothaman, M. Maaref, and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, Vol. 57, Issue 3, pp. 1562–1580
Tightly-coupled inertial navigation system with signals of opportunity aiding
J. Morales and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2021, Vol. 56, Issue 3, pp. 1930–1948
Performance evaluation of TOA positioning in asynchronous cellular networks using stochastic geometry models
J. Khalife, C. Sevinc, and Z. Kassas
IEEE Wireless Communications Letters, 2020, Vol. 9, Issue 9, pp. 1422-1426
Measurement characterization and autonomous outlier detection and exclusion for ground vehicle navigation with cellular signals
M. Maaref and Z. Kassas
IEEE Transactions on Intelligent Vehicles, 2020, Vol. 5, Issue 4, pp. 670-683
Robust vehicular localization and map-matching in urban environments through IMU, GNSS, and cellular signals
Z. Kassas, M. Maaref, J. Morales, J. Khalife, and K. Shamaei
IEEE Intelligent Transportation Magazine, 2020, Vol. 12, Issue 3, pp. 36-52, (special issue)
Opportunistic UAV navigation with carrier phase measurements from asynchronous cellular signals
J. Khalife and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2020, Vol. 56, Issue 4, pp. 3285-3301
Ground vehicle navigation in GNSS-challenged environments using signals of opportunity and a closed-loop map-matching approach
M. Maaref and Z. Kassas
IEEE Transactions on Intelligent Transportation Systems, 2020, Vol. 21, Issue 7, pp. 2723-2738
Autonomous surface vehicle multistep look-ahead measurement location planning for optimal localization of underwater acoustic transponders
J. Garcia, J. Farrell, Z. Kassas, and M. Ouimet
IEEE Transactions on Aerospace and Electronic Systems, 2019, Vol. 55, Issue 6, pp. 2836-2849
Optimal sensor placement for dilution of precision minimization via quadratically constrained fractional programming
J. Khalife and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2019, Vol. 55, Issue 4, pp. 2086-2096
Lane-level localization and mapping in GNSS-challenged environments by fusing lidar data and cellular pseudoranges
M. Maaref, J. Khalife, and Z. Kassas
IEEE Transactions on Intelligent Vehicles, 2019, Vol. 4, Issue 1, pp. 73-89
Stochastic observability and uncertainty characterization in simultaneous receiver and transmitter localization
J. Morales and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2019, Vol. 55, Issue 2, pp. 1021-1031
LTE receiver design and multipath analysis for navigation in urban environments
K. Shamaei and Z. Kassas
NAVIGATION, Journal of the Institute of Navigation, 2018, Vol. 65, Issue 4, pp. 655-675 (invited)
Navigation with cellular CDMA signals - Part II: performance analysis and experimental results
J. Khalife and Z. Kassas
IEEE Transactions on Signal Processing, 2018, Vol. 66, Issue 8, Apr. 2018, pp. 2204-2218
Navigation with cellular CDMA signals - Part I: signal modeling and software-defined receiver design
J. Khalife, K. Shamaei, and Z. Kassas
IEEE Transactions on Signal Processing, 2018, Vol. 66, Issue 8, Apr. 2018, pp. 2191-2203
Exploiting LTE signals for navigation: theory to implementation
K. Shamaei, J. Khalife, and Z. Kassas
IEEE Transactions on Wireless Communications, 2018, Vol. 17, Issue 4, Apr. 2018, pp. 2173-2189
Optimal collaborative mapping of terrestrial transmitters: receiver placement and performance characterization
J. Morales and Z. Kassas
IEEE Transactions on Aerospace and Electronic Systems, 2018, Vol. 54, Issue 2, Apr. 2018, pp. 992-1007
I hear, therefore
I know where I am: compensating for GNSS limitations with cellular signals
Z. Kassas, J. Khalife, K. Shamaei, and J. Morales
IEEE Signal Processing Magazine, Vol. 34, Issue 5, Sep. 2017, pp. 111-124 (special issue)
Receding horizon trajectory optimization in opportunistic navigation environments
Z. Kassas and T. Humphreys
IEEE Transactions on Aerospace and Electronic Systems, Vol. 51, Issue 2, Apr. 2015, pp. 866-877
Greedy motion planning for simultaneous signal landscape mapping and receiver localization
Z. Kassas, A. Arapostathis, and T. Humphreys
IEEE Journal of Selected Topics in Signal Processing,Vol. 9, Issue 2, Mar. 2015, pp. 247-258
A phase-reconstruction technique enabling low-power centimeter-accurate mobile positioning
K. Pesyna, Z. Kassas, R. Heath, and T. Humphreys
IEEE Transactions on Signal Processing, Vol. 62, Issue 10, May 2014, pp. 2595-2610
Observability analysis of collaborative opportunistic navigation with pseudorange measurements
Z. Kassas and T. Humphreys
IEEE Transactions on Intelligent Transportation Systems, Vol. 15, Issue 1, Feb. 2014, pp. 260-273
Discretisation of continuous-time dynamic MIMO systems with nonuniform delays
Z. Kassas
IET Control Theory & Applications, Vol. 5, Issue 14, Sep. 2011, pp. 1637-1647
A nonlinear filter coupled with hospitability and synthetic inclination maps for in-surveillance and out-of-surveillance target tracking
Z. Kassas and U. Ozguner
IEEE Transactions on Systems, Man, and Cybernetics - Part C, Vol. 40, Issue 1, Jan. 2010, pp. 87-97
Power matching approach for GPS coverage extension
S. Saab and Z. Kassas
IEEE Transactions on Intelligent Transportation Systems, Vol. 7, Issue 2, Jun. 2006, pp. 156-166
Conference Papers
An interacting multiple model estimator of LEO satellite clocks for improved positioning
N. Khairallah and Z. Kassas
IEEE Vehicular Technology Conference, Jun. 19-22, 2022, Helsinki, Finland, accepted
Multipath mitigation of 5G signals via reinforcement learning for navigation in urban environments
A. Abdallah, M. Orabi, and Z. Kassas
IEEE Vehicular Technology Conference, Jun. 19-22, 2022, Helsinki, Finland, accepted
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, Apr. 24, 2022, San Diego, CA, accepted
Opportunistic navigation using sub-6 GHz 5G downlink signals: a case study on a ground vehicle
A. Abdallah and Z. Kassas
European Conference on Antennas and Propagation, Mar. 27 - Apr. 1, 2022, Madrid, Spain, accepted
Received power characterization of terrestrial cellular signals on high altitude aircraft
Z. Kassas, J. Khalife, A. Abdallah, C. Lee, J. Jurado, S. Wachtel, J. Duede, Z. Hoeffner, T. Hulsey, R. Quirarte, and R. Tay
IEEE Aerospace Conference, Mar. 5-12, 2022, Big Sky, MT, accepted
Transmitter selection for improved information gathering in aerial vehicle navigation with terrestrial signals of opportunity
A. Nguyen and Z. Kassas
ION International Technical Meeting, Jan. 25-27, 2022, Long Beach, CA, accepted
Doppler stretch estimation with application to tracking Globalstar satellite signals
M. Neinavaie, J. Khalife, and Z. Kassas
IEEE Military Communications Conference, Nov. 28 - Dec. 1, 2021, San Diego, CA, pp. 647-651 (special session)
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, Sep. 20-24, 2021, St. Louis, MO, pp. 2201–2211
Exploiting Starlink signals for
navigation: first results
M. Neinavaie, J. Khalife, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 20-24, 2021, St. Louis, MO, pp. 2766-2773
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, Sep. 20-24, 2021, St. Louis, MO, pp. 2507–2520
UAV navigation with 5G carrier phase measurements
A. Abdallah and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 20-24, 2021, St. Louis, MO, pp. 3294-3306
Ephemeris closed-loop tracking of LEO satellites with pseudorange and Doppler measurements
N. Khairallah and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 20-24, 2021, St. Louis, MO, pp. 2544-2555
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, Sep. 20-24, 2021, St. Louis, MO, pp. 2895-2909
A lower bound for the error covariance of radio SLAM with terrestrial signals of opportunity
A. Nguyen, Z. Shadram, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 20-24, 2021, St. Louis, MO, pp. 2294-2306
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, Sep. 19-22, 2021, Indianapolis, IN, accepted
Blind Doppler tracking from OFDM signals transmitted by broadband LEO satellites
J. Khalife, M. Neinavaie, and Z. Kassas
IEEE Vehicular Technology Conference, Apr. 25-28, 2021, Helsinki, Finland, pp. 1-5
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. 25-28, 2021, Helsinki, Finland, pp. 1-5
Blind Doppler tracking and beacon detection for opportunistic navigation with LEO satellite signals
M. Neinavaie, J. Khalife, and Z. Kassas
IEEE Aerospace Conference, Mar. 6-13, 2021, Big Sky, MT, pp. 1-8
Opportunistic navigation with Doppler measurements from Iridium Next and Orbcomm LEO satellites
M. Orabi, J. Khalife, and Z. Kassas
IEEE Aerospace Conference, Mar. 6-13, 2021, Big Sky, MT, pp. 1-9
Assessing machine learning for LEO satellite orbit determination in simultaneous tracking and navigation
T. Mortlock and Z. Kassas
IEEE Aerospace Conference, Mar. 6-13, 2021, Big Sky, MT, pp. 1-8
Evaluation of ground vehicle protection level reduction due to fusing GPS with faulty terrestrial signals of opportunity
M. Jia, J. Khalife, and Z. Kassas
ION International Technical Meeting, Jan. 25-28, 2021, San Diego, CA, pp. 354–365
Neural network-based ranging with LTE channel impulse response for localization in indoor environments
H. Lee, A. Abdallah, J. Park, J. Seo, and Z. Kassas
International Conference on Control, Automation, and Systems, Oct. 13-16, 2020, Busan, South Korea, pp. 939–944
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
ION Global Navigation Satellite Systems Conference, Sep. 21-25, 2020, St. Louis, MO, pp. 1566–1585
Blind opportunistic navigation: cognitive deciphering of partially known signals of opportunity
M. Neinavaie, J. Khalife, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 21-25, 2020, St. Louis, MO, pp. 2748–2757
Assessing real 5G signals for opportunistic navigation
A. Abdallah, K. Shamaei, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 21-25, 2020, St. Louis, MO, pp. 2548–2559
Blind Doppler estimation from LEO satellite signals: a case study with real 5G signals
J. Khalife, M. Neinavaie, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 21-25, 2020, St. Louis, MO, pp. 3046–3054
Performance analysis of simultaneous tracking and navigation with LEO satellites
T. Mortlock and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 21-25, 2020, St. Louis, MO, pp. 2416–2429
Integrity-based path planning Strategy for urban autonomous vehicular navigation using GPS and cellular signals
H. Lee, J. Seo, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 21-25, 2020, St. Louis, MO, pp. 2347–2357
Enhanced safety of autonomous driving by incorporating terrestrial signals of opportunity
M. Maaref, J. Khalife, and Z. Kassas
IEEE International Conference on Acoustics, Speech, and Signal Processing, May 4-8, 2020, Barcelona, Spain, pp. 9185–9189 (special session)
Navigation with differential carrier phase measurements from megaconstellation LEO satellites
J. Khalife, M. Neinavaie, and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 22-24, 2020, Portland, OR, pp. 1393–1404
Deep learning-aided spatial discrimination for multipath mitigation
A. Abdallah and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 22-24, 2020, Portland, OR, pp. 1324–1335
Optimal GPS integrity-constrained path planning for ground vehicles
M. Maaref and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 22-24, 2020, Portland, OR, pp. 655-660
A machine learning approach for GPS code phase estimation in multipath environments
M. Orabi, J. Khalife, A. Abdallah, Z. Kassas, and S. Saab
IEEE/ION Position, Location, and Navigation Symposium, Apr. 22-24, 2020, Portland, OR, pp. 1224–1229
Performance characterization of an indoor localization system with LTE code and carrier phase measurements and an IMU
A. Abdallah, K. Shamaei, and Z. Kassas
International Conference on Indoor Positioning and Indoor Navigation, Sep. 30 - Oct. 3, 2019, Pisa, Italy, pp. 1-8
Multipath-optimal UAV trajectory planning for urban UAV navigation with cellular signals
S. Ragothaman, M. Maaref, and Z. Kassas
IEEE Vehicular Technology Conference, Sep. 22-25, 2019, Honolulu, HI, pp. 1-6
Evaluation of feedback and feedforward coupling of synthetic aperture navigation with LTE signals
A. Abdallah and Z. Kassas
IEEE Vehicular Technology Conference, Sep. 22-25, 2019, Honolulu, HI, pp. 1-6
Orbit modeling for simultaneous tracking and navigation using LEO satellite signals
J. Morales, J. Khalife, U. Santa Cruz, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 16-20, 2019, Miami, FL, pp. 2090-2099
Assessment of differential carrier phase measurements from Orbcomm LEO satellite signals for opportunistic navigation
J. Khalife and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 16-20, 2019, Miami, FL, pp. 4053-4063
Sub-meter accurate UAV navigation and cycle slip detection with LTE carrier phase measurements
K. Shamaei and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 16-20, 2019, Miami, FL, pp. 2469-2479
UAV integrity monitoring measure improvement using terrestrial signals of opportunity
M. Maaref and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 16-20, 2019, Miami, FL, pp. 3045-3056
Indoor localization based on LTE carrier phase measurements and synthetic linear antenna array
A. Abdallah, K. Shamaei, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 16-20, 2019, Miami, FL, pp. 2670-2679
Receiver design for Doppler positioning with LEO satellites
J. Khalife and Z. Kassas
IEEE International Conference on Acoustics, Speech, and Signal Processing, May 12-17, 2019, Brighton, UK, pp. 5506-5510
Simultaneous tracking of Orbcomm LEO satellites and inertial navigation system aiding using Doppler measurements
J. Morales, J. Khalife, and Z. Kassas
IEEE Vehicular Technology Conference, Apr. 28 - May 1, 2019, Kuala Lumpur, Malaysia, pp. 1-6
A framework for navigation with LTE time-correlated pseudorange errors in multipath environments
K. Shamaei, J. Morales, and Z. Kassas
IEEE Vehicular Technology Conference, Apr. 28 - May 1, 2019, Kuala Lumpur, Malaysia, pp. 1-6
Pseudorange measurement outlier detection for navigation with cellular signals
M. Maaref, J. Khalife, and Z. Kassas
ACM/IEEE International Conference on Cyber-Physical Systems, Apr. 16-18, 2019, Montreal, Canada, pp. 346-347
Performance evaluation of navigation using LEO satellite signals with periodically transmitted satellite positions
C. Ardito, J. Morales, J. Khalife, A. Abdallah, and Z. Kassas
ION International Technical Meeting, Jan. 28-31, 2019, Reston, VA, pp. 306-318
Event-based communication strategy for collaborative navigation with signals of opportunity
J. Morales and Z. Kassas
Asilomar Conference on Signals, Systems and Computers, Oct. 28-31, 2018, Pacific Grove, CA, pp. 548-553 (invited)
Inertial navigation system aiding with Orbcomm LEO satellite Doppler measurements
J. Morales, J. Khalife, A. Abdallah, C. Ardito, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 24-28, 2018, Miami, FL, pp. 2718-2725
Centimeter-accurate UAV navigation with cellular signals
J. Khalife, S. Bhattacharya, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 24-28, 2018, Miami, FL, pp. 2321-2331
Integrity monitoring of LTE signals of opportunity-based navigation for autonomous ground vehicles
M. Maaref, J. Khalife, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 24-28, 2018, Miami, FL, pp. 2456-2466
Positioning performance of LTE signals in Rician fading environments exploiting antenna motion
K. Shamaei, J. Morales, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 24-28, 2018, Miami, FL, pp. 3423-3432
Indoor positioning based on LTE carrier phase measurements and an inertial measurement unit
A. Abdallah, K. Shamaei, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 24-28, 2018, Miami, FL, pp. 3374-3384
A low communication rate distributed inertial navigation architecture with cellular signal aiding
J. Morales and Z. Kassas
IEEE Vehicular Technology Conference, Jun. 3-6, 2018, Porto, Portugal, pp. 1-6
Precise UAV navigation with cellular carrier phase measurements
J. Khalife and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 23-26, 2018, Monterey, CA, pp. 978-989
Information fusion strategies for collaborative radio SLAM
J. Morales and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 23-26, 2018, Monterey, CA, pp. 1445-1454
A joint TOA and DOA approach for positioning with LTE signals
K. Shamaei, J. Khalife, and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 23-26, 2018, Monterey, CA, pp. 81-91
Optimal measurement location planning for localizing underwater transponders
J. Garcia, J. Farrell, and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 23-26, 2018, Monterey, CA, pp. 480-486
A machine learning approach for localization in cellular environments
A. Abdallah, S. Saab, and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 23-26, 2018, Monterey, CA, pp. 1223-1227
Pseudorange and multipath analysis of positioning with LTE secondary synchronization signals
K. Shamaei, J. Khalife, and Z. Kassas
IEEE Wireless Communications and Networking Conference, Apr. 15-18, 2018, Barcelona, Spain, pp. 286-291 (special session)
Distributed signals of opportunity aided inertial navigation with intermittent communication
J. Morales and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 25-29, 2017, Portland, OR, pp. 2519-2530
Computationally efficient receiver design for mitigating multipath for positioning with LTE signals
K. Shamaei, J. Khalife, S. Bhattacharya, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 25-29, 2017, Portland, OR, pp. 3751-3760
Evaluation of relative clock stability in cellular networks
J. Khalife and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 25-29, 2017, Portland, OR, pp. 2554-2559
Ranging precision analysis of LTE signals
K. Shamaei, J. Khalife, and Z. Kassas
European Signal Processing Conference, Aug. 28 - Sep. 2, 2017, Kos Island, Greece, pp. 2788-2792 (special session)
Pose estimation with lidar odometry and cellular pseudoranges
J. Khalife, S. Ragothaman, and Z. Kassas
IEEE Intelligent Vehicles Symposium, Jun. 11-14, 2017, Redondo Beach, CA, pp. 1722-1727
Modeling and analysis of sector clock bias mismatch for navigation with cellular signals
J. Khalife and Z. Kassas
American Control Conference, May 24-26, 2017, Seattle, WA, pp. 3573-3578
Collaborative autonomous vehicles with signals of opportunity aided inertial navigation systems
J. Morales, J. Khalife, and Z. Kassas
ION International Technical Meeting, Jan. 30 - Feb. 2, 2017, Monterey, CA, pp. 805-818
Comparative results for positioning with secondary synchronization signal versus cell specific reference signal in LTE systems
K. Shamaei, J. Khalife, and Z. Kassas
ION International Technical Meeting, Jan. 30 - Feb. 2, 2017, Monterey, CA, pp. 1256-1268
Signals of opportunity aided inertial navigation
J. Morales, P. Roysdon, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 12-16, 2016, Portland, OR, pp. 1492-1501
Performance characterization of positioning in LTE systems
K. Shamaei, J. Khalife, and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 12-16, 2016, Portland, OR, pp. 2262-2270
Characterization of sector clock biases in cellular CDMA systems
J. Khalife and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 12-16, 2016, Portland, OR, pp. 2281-2285
A software-defined receiver architecture for cellular CDMA-based navigation
J. Khalife, K. Shamaei, and Z. Kassas
IEEE/ION Position, Location, and Navigation Symposium, Apr. 11-14, 2016, Savannah, GA, pp. 816-826
GNSS vertical dilution of precision reduction using terrestrial signals of opportunity
J. Morales, J. Khalife, and Z. Kassas
ION International Technical Meeting, Jan. 25-28, 2016, Monterey, CA, pp. 664-669
Optimal receiver placement for collaborative mapping of signals of opportunity
J. Morales and Z. Kassas
ION Global Navigation Satellite Systems Conference, Sep. 14-18, 2015, Tampa, FL, pp. 2362-2368
Indoor localization based on floor plans and power maps: non-line of sight to virtual line of sight
J. Khalifeh, Z. Kassas, and S. Saab
ION Global Navigation Satellite Systems Conference, Sep. 14-18, 2015, Tampa, FL, pp. 2291-2300
Adaptive estimation of signals of opportunity
Z. Kassas, V. Ghadiok, and T. Humphreys
ION Global Navigation Satellite Systems Conference, Sep. 8-12, 2014, Tampa, FL, pp. 1679-1689
A graphical approach to GPS software-defined receiver implementation
Z. Kassas, J. Bhatti, and T. Humphreys
IEEE Global Conference on Signal and Information Processing, Dec. 3-5, 2013, Austin, TX, pp. 1226-1229 (invited)
The price of anarchy in active signal landscape map building
Z. Kassas and T. Humphreys
IEEE Global Conference on Signal and Information Processing, Dec. 3-5, 2013, Austin, TX, pp. 165-168
Receding horizon trajectory optimization for simultaneous signal landscape mapping and receiver localization
Z. Kassas, J. Bhatti, and T. Humphreys
ION Global Navigation Satellite Systems Conference, Sep. 16-20, 2013, Nashville, TN, pp. 1962-1969
Motion planning for optimal information gathering in opportunistic navigation systems
Z. Kassas and T. Humphreys
AIAA Guidance, Navigation, and Control Conference, Aug. 19-22, 2013, Boston, MA, pp. 4551-4565
Observability and estimability of collaborative opportunistic navigation with pseudorange measurements
Z. Kassas and T. Humphreys
ION Global Navigation Satellite Systems Conference, Sep. 17-21, 2012, Nashville, TN, pp. 621-630
Observability analysis of opportunistic navigation with pseudorange measurements
Z. Kassas and T. Humphreys
AIAA Guidance, Navigation, and Control Conference, Aug. 13-16, 2012, Minneapolis, MN, pp. 4760-4775
Optimal H2 and H∞ control of extremely large segmented telescopes
Z. Kassas and R. Bishop
AIAA Guidance, Navigation, and Control Conference, Aug. 13-16, 2012, Minneapolis, MN, pp. pp. 4529-4540
Constructing a continuous phase time history from TDMA signals for opportunistic navigation
K. Pesyna, Z. Kassas, and T. Humphreys
IEEE/ION Position, Location, and Navigation Symposium, Apr. 24-26, 2012, Myrtle Beach, SC, pp. 1209-1220
Tightly-coupled opportunistic navigation for deep urban and indoor positioning
K. Pesyna, Z. Kassas, J. Bhatti, and T. Humphreys
ION Global Navigation Satellite Systems Conference, Sep. 20-23, 2011, Portland, OR, pp. 3605-3617
Numerical simulation of continuous-time stochastic dynamical systems with noisy measurements and their discrete-time equivalents
Z. Kassas
IEEE International Symposium on Computer-Aided Control System Design, Sep. 28-30, 2011, Denver, CO, pp. 1397-1402
Methodologies for implementing FPGA-based control systems
Z. Kassas
IFAC World Congress, Aug. 28 - Sep. 2, 2011, Milan, Italy, pp. 9911-9916
A numerical algorithm for reconstructing continuous-time linear models with pure integrators from their discrete-time equivalents
Z. Kassas and G. Morrow
IEEE International Symposium on Computer-Aided Control System Design, Sep. 3-5, 2008, San Antonio, TX, pp. 377-382
New mechatronics development techniques for FPGA-based control of electromechanical systems
B. MacCleery and Z. Kassas
IFAC World Congress, Jul. 6-11, 2008, Seoul, South Korea, pp. 4434-4439
A unified approach for classroom and laboratory control systems education
Z. Kassas and R. Dunia
IFAC World Congress, Jul. 6-11, 2008, Seoul, South Korea, pp. 14618-14623
Discretization of MIMO systems with nonuniform input and output fractional time delays
Z. Kassas and R. Dunia
IEEE Conference on Decision and Control, Dec. 13-15, 2006, San Diego, CA, pp. 2541-2546
Out-of-surveillance target state estimation: a combined hospitability and synthetic inclination approach
Z. Kassas, U. Ozguner, and J. Layne
IEEE Conference on Decision and Control, Dec. 14-17, 2004, Paradise Island, Bahamas, pp. 710-715
Map-based land vehicle navigation system with DGPS
S. Saab and Z. Kassas
IEEE Intelligent Vehicle Symposium, Jun. 17-21, 2002, Versailles, France, pp. 209-214
M.S. Theses
Path planning for autonomous ground vehicles using GNSS and cellular LTE signal reliability maps and GIS 3-D maps
S. Ragothaman
M.S. Thesis, University of California, Riverside, USA, Dec. 2018
Autonomous surface vehicle measurement location planning for optimal underwater acoustic transponder localization
J. Garcia
M.S. Thesis, University of California, Riverside, USA, Sep. 2018
Ph.D. Dissertations
Inertial radio SLAM: Standalone and collaborative architectures
J. Morales
Ph.D. Dissertation, University of California, Irvine, USA, Mar. 2020
Precise navigation with cellular signals: Receiver design, differential and non-differential frameworks, and performance analysis
J. Khalife
Ph.D. Dissertation, University of California, Irvine, USA, Mar. 2020
Exploiting cellular signals for navigation: 4G to 5G
K. Shamaei
Ph.D. Dissertation, University of California, Irvine, USA, Mar. 2020
Analysis and synthesis of collaborative opportunistic navigation systems
Z. Kassas
Ph.D. Dissertation, The University of Texas at Austin, USA, May 2014
Book Chapters
Navigation from low Earth orbit – Part 2: models, implementation, and performance
Z. Kassas
Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications, Volume 2, Wiley-IEEE Press, Jan. 2021, pp. 1381-1412
Navigation with cellular signals of opportunity
Z. Kassas
Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications, Volume 2, Wiley-IEEE Press, Jan. 2021, pp. 1171-1223
A hospitability map approach for estimating a mobile target location
J. Layne, M. Eilders, Z. Kassas, and U. Ozguner
Recent Developments in Cooperative Control and Optimization, Kluwer Academic Publishers, Nov. 2003, pp. 117-124
Magazine Articles
Enter LEO on the GNSS stage: navigation with Starlink satellites
Z. Kassas, M. Neinavaie, J. Khalife, N. Khairallah, S. Kozhaya, J. Haidar-Ahmad, and Z. Shadram
Inside GNSS Magazine, Vol. 16, Issue 6, Dec. 2021, pp. 42-51 (cover article)
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, pp. 52–57
Recent advancement on the use of global navigation satellite system-based positioning for intelligent transport systems
F. Dovis, L. Ruotsalainen, R. Toledo-Moreo, Z. Kassas, and V. Gikas
IEEE Intelligent Transportation Systems Magazine, Vol. 12, Issue 3, Jul. 2020, pp. 6–9 (special issue)
Opportunity comes knocking: overcoming GPS vulnerabilities with other satellites’ signals
Z. Kassas, J. Khalife, M. Neinavaie, and T. Mortlock
Inside Unmanned Systems Magazine, Jul. 2020, pp. 30–35 (special issue)
New-age satellite-based navigation – STAN: simultaneous tracking and navigation with LEO satellite signals
Z. Kassas, J. Morales, and J. Khalife
Inside GNSS Magazine, Vol. 14, Issue 4, Aug. 2019, pp. 56–65 (cover article)
Navigation systems for autonomous and semi-autonomous vehicles: current trends and future challenges
Z. Kassas, P. Closas, and J. Gross
IEEE Aerospace and Electronic Systems Magazine, Vol. 34, Issue 5, May 2019, pp. 82-84 (invited)
LTE steers UAV
Z. Kassas, J. Morales, K. Shamaei, and J. Khalife
GPS World Magazine, Vol. 28, Issue 4, Apr. 2017, pp. 18-25 (cover article)
Opportunity for accuracy
J. Morales, J. Khalife, and Z. Kassas
GPS World Magazine, Vol. 27, Issue 3, Mar. 2016, pp. 22-29 (cover article)
Collaborative opportunistic navigation
Z. Kassas
IEEE Aerospace and Electronic Systems Magazine, Vol. 28, Issue 6, Jun. 2013, pp. 38-41
Patents
Systems and methods for positioning and navigation with low Earth orbit satellite signals
Z. Kassas and A. Neinavaie
U.S. Patent Application No. 63/393,501, Filed: Jul. 29, 2022
Systems and methods for determining cellular downlink observables and navigation
Z. Kassas and A. Abdallah
U.S. Patent Application No. 63/355,890, Filed: Jun. 27, 2022
Systems and methods for user equipment based 5G navigation and downlink bandwidth operations
Z. Kassas and A. Abdallah
U.S. Patent Application No. 63/315,719, Filed: Mar. 2, 2022
Systems and methods for acquisition and tracking of unknown LEO satellite signals
Z. Kassas, J. Khalife, and M. Neinavaie
U.S. Patent Application No. 63/210,595, Filed: Jun. 15, 2021
Systems and methods for differential and non-differential navigation with cellular signals
Z. Kassas and J. Khalife
U.S. Patent Application No. 63/155,048, Filed: Mar. 1, 2021
Systems and methods for blind opportunistic navigation, cognitive deciphering of partially known signals of opportunity, and blind Doppler estimation from LEO satellite signals
Z. Kassas, M. Neinavaie, and J. Khalife
U.S. Patent Application No. 63/087,591, Filed: Oct. 5, 2020
Navigation with differential carrier phase measurement from low Earth orbit satellites
Z. Kassas, J. Khalife, and M. Neinavaie
U.S. Patent Application No. 63/047,796, Filed: Jul. 2, 2020
Systems and methods for opportunistic time of arrival estimation for opportunistic localization with 5G signals
Z. Kassas and K. Shamaei
U.S. Patent Application No. 63/026,360, Filed: May 18, 2020
Systems and methods for TOA and DOA acquisition and tracking for signal of opportunity positioning
Z. Kassas and K. Shamaei
U.S. Patent Application No. 63/013,638, Filed: Apr. 22, 2020
Sub-meter accurate navigation and cycle slip detection with LTE carrier phase measurements
Z. Kassas and K. Shamaei
U.S. Patent Application No. 62/930,298, Filed: Nov. 4, 2019
Indoor localization system with LTE code and carrier phase measurements and an IMU
Z. Kassas, A. Abdallah, and K. Shamaei
U.S. Patent Application No. 62/913,078, Filed: Oct. 9, 2019
Synthetic aperture navigation with LTE signals
Z. Kassas and A. Abdallah
U.S. Patent Application No. 62/913,074, Filed: Oct. 9, 2019
Receiver design for Doppler positioning with low Earth orbit satellites and differential carrier phase measurements
Z. Kassas, J. Khalife, and A. Abdallah
U.S. Patent Application No. 62/834,317, Filed: Apr. 15, 2019
Simultaneous tracking and navigation using LEO satellite signals
Z. Kassas J. Morales, and J. Khalife
U.S. Patent Application No. 62/834,313, Filed: Apr. 15, 2019
Lane-level navigation system for ground vehicles with lidar and cellular signals
Z. Kassas, M. Maaref, and J. Khalife
U.S. Patent Application No. 62/721,967, Filed: Aug. 23, 2018
Signals of opportunity aided inertial navigation system
Z. Kassas and J. Morales
U.S. Patent Application No. 62/398,413, Filed: Sep. 22, 2016
Software-defined radio for navigation with LTE signals
Z. Kassas, K. Shamaei, and J. Khalife
U.S. Patent Application No. 62/398,403, Filed: Sep. 22, 2016
Software-defined radio for navigation
with cellular CDMA signals
Z. Kassas, J. Khalife, and K. Shamaei
U.S. Patent Application No. 62/294,758, Filed: Feb. 12 2016
Multi-channel algorithm infrastructure for programmable hardware elements
Z. Kassas and J. Lewis
Patent No. 8,122,238, Issued: Feb. 21, 2012
|