Radionavigation Laboratory
At the University of Texas at Austin Radionavigation Laboratory, we explore novel ways to exploit and protect radionavigation systems such as GPS. We develop technologies that advance software-defined GNSS receivers, enable opportunistic navigation, ensure navigation security and integrity, and explain ionospheric phenomena.
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Recent Submissions
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A Proposal for Securing Terrestrial Radio-Navigation Systems
(2020)The security of terrestrial radio-navigation systems (TRNS) has not yet been addressed in the literature. This proposal builds on what is known about securing global navigation satellite systems (GNSS) to address this gap, ... -
Multi-Antenna Vision-and-Inertial-Aided CDGNSS for Micro Aerial Vehicle Pose Estimation
(2020)A system is presented for multi-antenna carrier phase differential GNSS (CDGNSS)-based pose (position and orientation) estimation aided by monocular visual measurements and a smartphone-grade inertial sensor. The system ... -
Open-World Virtual Reality Headset Tracking
(2020)A novel outdoor Virtual Reality (VR) concept called Open-World Virtual Reality (OWVR) is presented that combines precise GNSS positioning and a smartphone-grade inertial sensor to provide globally-referenced centimeter-a ... -
Automotive Collision Risk Estimation Under Cooperative Sensing
(IEEE, 2020)This paper offers a technique for estimating collision risk for automated ground vehicles engaged in cooperative sensing. The technique allows quantification of (i) risk reduced due to cooperation, and (ii) the increased ... -
Accuracy Limits for Globally-Referenced Digital Mapping Using Standard GNSS
(IEEE, 2018)Exchange of location and sensor data among connected and automated vehicles will demand accurate global referencing of the digital maps currently being developed to aid positioning for automated driving. This paper ... -
A Comparison of Methods for Online Lever Arm Estimation in GPS/INS Integration
(2018)A comparison of neural network, state augmentation, and multiple model-based approaches to online location of inertial sensors on a vehicle is presented that exploits dualantenna carrier-phase-differential GNSS. The best ... -
Low-cost Precise Vehicular Positioning in Urban Environments
(IEEE/ION Position, Location and Navigation Symposium (PLANS), 2018)A system developed at The University of Texas for low-cost precise urban vehicular positioning is demonstrated to achieve a probability of correct integer fixing greater than 96.5% for a probability of incorrect integer ... -
Cross-Modal Localization: Using Automotive Radar for Absolute Geolocation within a Map Produced with Visible-Light Imagery
(IEEE, 2020)This paper explores the possibility of localizing an automotive-radar-equipped vehicle within an urban environment relative to an existing map of the environment created using data from visible light cameras. Such cross-modal ... -
Economical Fused LEO GNSS
(IEEE, 2020)In addition to Internet service, new commercial broadband low-Earth-orbiting (LEO) satellites could provide a positioning, navigation, and timing (PNT) service far more robust to interference than traditional Global ... -
Intercepting Unmanned Aerial Vehicle Swarms with Neural-Network-Aided Game-Theoretic Target Assignment
(IEEE, 2020)This paper examines the use of neural networks to perform low-level control calculations within a larger game-theoretic framework for drone swarm interception. As unmanned aerial vehicles (UAVs) become more capable and ... -
Low SWaP-C Radar for Urban Air Mobility
(IEEE, 2020)A method is developed and tested for extending the range of low-cost radar chipsets for use in urban air mobility (UAM) vehicles. The method employs weak-signal correlation techniques and long measurement intervals to ... -
Automotive-Radar-Based 50-cm Urban Positioning
(IEEE, 2020)Deployment of automated ground vehicles (AGVs) beyond the confines of sunny and dry climes will require sub-lane-level positioning techniques based on radio waves rather than near-visible-light radiation. Like human sight, ... -
TEX-CUP: The University of Texas Challenge for Urban Positioning
(2020)A public benchmark dataset collected in the dense urban center of the city of Austin, TX is introduced for evaluation of multi-sensor GNSS-based urban positioning. Existing public datasets on localization and/or odometry ... -
GPS Spoofing and the Financial Sector
(2011-06) -
Position Paper: Secure Time Transfer for CPS
(2012)To secure the future of “new clockwork,” research must overcome the current vulnerabilities of cyber-physical systems to malicious timing attacks. Such attacks can take a wide range of forms—from physical to cyber to a ...
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