Results 1 to 10 of about 1,365 (214)
Sensors, 2021 The traditional signal of opportunity (SOP) positioning system is equipped with dedicated receivers for each type of signal to ensure continuous signal perception. However, it causes a low equipment resources utilization and energy waste. With increasing
Zhongliang Deng +3 more
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Practical Use of Starlink Downlink Tones for Positioning
Sensors, 2023 The large availability of Low Earth Orbit (LEO) satellite systems makes them useful beyond their original purposes, such as in positioning, where their signals can be passively used.
Nabil Jardak, Ronan Adam
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PRN Sequence Estimation with a Self-Calibrating 40-Element Antenna Array
Navigation, 2023 This work explores the use of a low-cost global navigation satellite system (GNSS) antenna array including front-ends and a global navigation satellite system (GNSS) software receiver to receive signals of opportunity (SoO) whose pseudorandom noise (PRN)
Dominik Dötterböck +4 more
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Dianxin kexue, 2023 Communication and navigation symbiosis refers to the coexistence of these signals in the satellite ecological environment.For single-function low-orbit satellite constellations for positioning or communication, it is difficult to quickly perform ...
Jie SHEN +6 more
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Geoscience Letters, 2021 In recent years, signal of opportunity reflectometry (SoOp-R) has become a promising remote sensing technique. This emerging technique employs the reflected signals from existing Global Navigation Satellite System (GNSS) or communication satellites to ...
Xuerui Wu +4 more
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Remote Sensing, 2023 Considering the problem of GNSS service interruption caused by the insufficient number of available satellites in complex environments, Low Earth Orbit (LEO) satellites can supplement GNSS effectively.
Muyuan Jiang +4 more
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Do subseasonal forecasts take advantage of Madden–Julian oscillation windows of opportunity?
Atmospheric Science Letters, 2022 This study proposes an objective methodology to highlight windows of opportunity in a numerical subseasonal forecasting system. The methodology is based on a contingency table and is applied to the prediction of heavy tropical precipitation by the ...
Damien Specq, Lauriane Batté
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The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications [PDF]
International Journal of Electronics and Telecommunications, 2023 The performance of free-space optical (FSO) communications that using an optical amplifier (OA) in the scheme of an amplify-received (AR)-relaying has a major drawback in the detection of input signal quality under the effects of turbulence.
Ucuk Darusalam +3 more
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Sensors, 2013 Since Global Navigation Satellite Systems (GNSS) show degraded performance in dense urban and indoor areas, a positioning sensor based on Digital Video Broadcast-Terrestrial (DVB-T) systems is presented in this paper.
Letizia Lo Presti +2 more
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Remote SensingSignal-of-Opportunity (SOP) positioning based on Low-Earth-Orbit (LEO) constellations has gradually become a research hotspot. Due to their large quantity, wide spectral coverage, and strong signal power, LEO satellite SOP positioning exhibits robust ...
Lihao Yao +14 more
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