Results 11 to 20 of about 132,782,286 (257)
Utö Observatory for Analysing Atmospheric Ducting Events over Baltic Coastal and Marine Waters
Remote Sensing, 2023 Maritime safety relies on navigation, detection, and radio communication technologies that function through electromagnetic radiation. Propagation of electromagnetic radiation can be impacted by a disruptive phenomenon known as ducting.
Laura Rautiainen +10 more
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A solution for the over-the-horizon-radar simulator [PDF]
Vojnotehnički Glasnik, 2020 Introduction/purpose: The OTHR simulator presented in this paper is developed and used in practice, with the aim of emulating radar signal environment, but also optimizing the radar parameters in real applications such as: radiated power, antenna ...
Bojan R. Džolić +4 more
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Seasonal Variation in Land and Sea Surface Backscatter Coefficients at High Frequencies
Remote Sensing, 2022 Over the horizon radars (OTHR) rely on the propagation of high frequency (HF) radio waves via the ionosphere to successfully achieve their designated missions.
Danielle Edwards, Manuel Cervera
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First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole [PDF]
, 2019 We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using ...
Sasada, Mahito +1 more
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Testing RFoF Link for Transmitting HF-OTHR Signal Between Transmitter and Receiver Shelters
Telfor Journal, 2021 HF-OTHR site contains two equipment shelters, up to 1 km away from each other, that need to be connected for transmitting a FMCW signal. This connection, if realized using a coaxial cable, has shown itself to be vulnerable to external electromagnetic ...
P. Petrović +6 more
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Target Altitude Estimation in Over-the-Horizon Radar
IEEE Access, 2022 Doppler signatures of local multipath signals provide useful information for target altitude estimation in over-the-horizon radar surveillance. In this paper, we develop a method to improve the resolution of these multipath Doppler signatures and enable ...
Yimin D. Zhang +2 more
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IET Radar, Sonar & Navigation, 2023 Since solving the path of radio wave propagation by an analytic method in the process of coordinate registration (CR) for skywave over‐the‐horizon radar (OTHR) is difficult, a reference source‐aided CR method that uses ensemble learning is proposed ...
Zhenshuo Lei +5 more
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Is Profit Horizon suggested by any VIP?
, 2021 Profit Horizon the point when we explored the Profit Horizon stage we saw that a few group with a known name of the larger part were profiting with the utilization of this kind of programming. Be that as it may, do they truly utilize the stage?
Profit Horizon
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INCOMPLETE MARKETS IN INFINITE HORIZON: DEBT CONSTRAINTS VERSUS NODE PRICES [PDF]
, 1995 The general equilibrium model with incomplete markets is here extended to infinite horizon economies populated by a finite number of infinitely lived agents.
Monique Florenzano +3 more
core +2 more sources
ECOLOGICALLY SAFE OVER THE HORIZON METER WAVELENGTH RADAR FOR TERRITORIAL WATERS GUARD [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. Without regard to successes attained in the field of monitoring of territorial formations frontier areas and environment the problem of territorial waters guard and control of economic zone is as well as before actual for many states,
I. M. Mytsenko, A. N. Roenko
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