A Comprehensive Study on Light Signals of Opportunity for Subdecimetre Unmodulated Visible Light Positioning [PDF]
Sensors, 2020 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
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Remote sensing of soil moisture using Rydberg atoms and satellite signals of opportunity [PDF]
Scientific ReportsSpaceborne 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
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New Method for Positioning Using IRIDIUM Satellite Signals of Opportunity [PDF]
IEEE Access, 2019 The global navigation satellite system (GNSS) system has a number of disadvantages such as weak signal strength and high cost, while signals of opportunity (SOPs) can make up for these shortcomings.
Zizhong Tan +3 more
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Signals of opportunity for space navigation: An application-oriented review
Results in EngineeringSpace navigation using X-Ray pulsars is known as opportunistic navigation, where we rely on signals of opportunity from natural phenomena to determine navigation solutions for spacecraft. However, this definition becomes too small or shallow, as it doesn'
A.J.R. Lopez-Arreguin, S. Montenegro
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Design and Application of a Mobile Ultra-Audio Frequency Electromagnetic Measurement System [PDF]
SensorsAlthough high-frequency electromagnetic methods, such as Radio Magnetotellurics (RMT) and Controlled-Source Radio Magnetotellurics (CSRMT), are highly effective for shallow-to-medium depth exploration, deploying traditional transmitter–receiver setups ...
Hongyu Ruan +5 more
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Positioning via GEO communication satellites’ signals of opportunity [PDF]
IET Radar, Sonar & Navigation, 2021 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
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Multi-Epoch Differential Pseudorange Joint Positioning Using GNSS Signals and Terrestrial Cellular Signals-of-Opportunity [PDF]
SensorsWhen 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
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Joint pseudo-range and Doppler positioning method with LEO Satellites‘ signals of opportunity [PDF]
Satellite NavigationLow Earth Orbit (LEO) satellites, with their wide coverage and large number, have gradually become a crucial platform and means for navigation and positioning services. Compared to other LEO constellations, Starlink has over 6000 satellites in orbit, and
Ying Xu +5 more
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Fast Signals of Opportunity Fingerprint Database Maintenance with Autonomous Unmanned Ground Vehicle for Indoor Positioning [PDF]
Sensors, 2018 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
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Toward Massive Satellite Signals of Opportunity Positioning: Challenges, Methods, and Experiments
Space: Science & TechnologySatellite signals of opportunity positioning (SSOOP) attempts to work out a navigation solution with many non-global navigation satellite systems (GNSS) satellite signals, when GNSS signals are not available.
Guangteng Fan +8 more
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