Positioning via GEO communication satellites’ signals of opportunity [PDF]
Inherent vulnerabilities seriously weaken global navigation satellite system service capability, particularly in hostile environments where electronic jamming, blocking, and deception can occur.
Yuanyuan Gao +5 more
doaj +2 more sources
A Comprehensive Study on Light Signals of Opportunity for Subdecimetre Unmodulated Visible Light Positioning [PDF]
Currently, visible light positioning (VLP) enabling an illumination infrastructure requires a costly retrofit. Intensity modulation systems not only necessitate changes to the internal LED driving module, but decrease the LEDs’ radiant flux as well. This
Sander Bastiaens +4 more
doaj +2 more sources
Multi-Epoch Differential Pseudorange Joint Positioning Using GNSS Signals and Terrestrial Cellular Signals-of-Opportunity [PDF]
When the global navigation satellite systems (GNSSs) are unavailable, cellular signals of opportunity (SOPs) can be used to achieve positioning. However, in low observability environments where both GNSS signals and cellular SOPs are less than 2, the ...
Pei Zhang +3 more
doaj +2 more sources
Fast Signals of Opportunity Fingerprint Database Maintenance with Autonomous Unmanned Ground Vehicle for Indoor Positioning [PDF]
Indoor positioning technology based on Received Signal Strength Indicator (RSSI) fingerprints is a potential navigation solution, which has the advantages of simple implementation, low cost and high precision.
Yitang Peng +4 more
doaj +2 more sources
Remote sensing of soil moisture using Rydberg atoms and satellite signals of opportunity [PDF]
Spaceborne radar remote sensing of the earth system is essential to study natural and man-made changes in the ecosystem, water and energy cycles, weather and air quality, sea level, and surface dynamics.
Darmindra Arumugam +4 more
doaj +2 more sources
Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites [PDF]
Experts and scholars from various nations have proposed studying low Earth orbit (LEO) satellite signals as the space-based signals of opportunity (SOPs) for navigation and positioning.
Yanhua Tao +4 more
doaj +2 more sources
We investigate the feasibility of using built-in GNSS sensors within ubiquitous smartphone devices from a small UAS for the purpose of land remote sensing. We summarize the experimental findings and challenges that need to be resolved in order to perform
Mehmet Kurum +2 more
doaj +1 more source
Analysis of 5G and LTE Signals for Opportunistic Navigation and Time Holdover
The purpose of this study was to evaluate the stability and therefore suitability of available fifth generation (5G) and long-term evolution (LTE) signals for positioning navigation and timing (PNT) purposes with particular focus on answering questions ...
Adrian Winter +2 more
doaj +1 more source
Assessing Repeatable Accuracy Potential of LoRa: A Navigation Approach
Two main classes of radio navigation systems are satellite and ground-based systems. Examples of such systems are eLoran deployed as a terrestrial system, and BeiDou, Galileo, GPS and Quasi-Zenith Satellite System (QZSS) deployed as satellite Navigation ...
Caspar K. Lebekwe +3 more
doaj +1 more source
Self-Organizing Multilateration of an Unknown Number of Transmitters
Wireless Sensor Networks (WSNs) that classify the source of detected radio signals require mobile transmitters, physical (PHY) and link layer meta data, and packet sniffing capabilities.
Kyle W. McClintick +2 more
doaj +1 more source

