Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"positioning, navigation, and timing"”.
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Risk-resilient GPS-based positioning, navigation, and timing using sensor fusion and multi-agent platforms
The Global Positioning System (GPS) has become a stealth utility for many applications, such as positioning and navigation for ground and aerial vehicles, and timing and synchronization for the modern power systems. However, GPS receivers suffer from various vulnerabilities, including measurement …
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Quantum networks : state transmission and network operation
… quantum sensing, quantum cloud computing, and next-generation positioning, navigation, and timing. The main task of quantum networks is to enable quantum communication among different nodes in the network. This includes the topics such as the transmission of quantum states involving …
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Using Random Sampling Consensus (RANSAC) to Detect Errors in Global Navigation Satellite Systems (GNSS) Signals and Data
A positioning, navigation, and timing (PNT) signal can be used to estimate a user's position at an identified time. A global navigation satellite system (GNSS) uses the PNT signal to provide satellite-based navigation. Advanced receivers can track multiple GNSS constellations simultaneously. In …
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Smartphone precise positioning in urban environments using internal GNSS and IMU sensors
The high level of signal noise and multipath effect errors cannot be neglected when it comes to smartphone-grade GNSS receivers and antennas, and along with frequent carrier-phase measurement discontinuities and losses, pose a challenge for advanced GNSS positioning techniques. In response to these …
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Joint Localization and Synchronization via User Cooperation in Non-Terrestrial Networks
… wireless networks require accurate localization and synchronization for efficient resource management and emerging applications. Non-terrestrial networks (NTN) with low Earth orbit (LEO) satellites offer a promising alternative for positioning, navigation, and timing (PNT) by providing diversity …
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Exploiting Signals of Opportunity for High-Precision PNT: Optimized Bayesian Estimation Across 5G and LEO Networks
The rapid advancement of autonomous technologies and highly dynamic platforms demands continuous, high-precision positioning, navigation, and timing (PNT) systems. While traditional global navigation satellite systems (GNSS) degrade severely in deep urban canyons, emerging terrestrial 5G …
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Advanced Receiver Autonomous Integrity Monitoring for Multi-Constellation GNSS and LEO-Augmented GNSS
Global Navigation Satellite Systems (GNSS), including the U.S. Global Positioning System (GPS), the European Galileo, Russia's GLONASS, and China's BeiDou, have become essential for modern positioning, navigation, and timing (PNT) services, from driving directions to timing in telecommunications. …
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Frequency stability in a compact, deployable optical atomic clock
… of ultra-narrow lasers, ultra-fast lasers, and optical frequency combs in the last several decades have enabled a new generation of atomic clocks based on optical transitions as opposed to microwave transitions While optical atomic clocks in the laboratory outperform microwave standards by …
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Resilient Navigation through Jamming Detection and Measurement Error Modeling
Global Navigation Satellite Systems (GNSS) provide critical positioning, navigation, and timing (PNT) services across various sectors. GNSS signals are weak when they reach Earth from Medium Earth Orbit (MEO), making them vulnerable to jamming. The jamming threat has been growing over the past …
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Adaptive Interference Mitigation in GPS Receivers
Satellite navigation systems (GNSS) are among the most complex radio-navigation systems, providing positioning, navigation, and timing (PNT) information. A growing number of public sector and commercial applications rely on the GNSS PNT service to support business growth, technical development, and …