Results 1 to 10 of about 23,059 (167)

Analogue photonic link design charts for microwave engineering applications

open access: yesThe Journal of Engineering, 2015
A set of unique design charts for intensity-modulation direct-detection microwave photonics links is presented. The charts facilitate link design and analysis, clearly demonstrating performance trade-offs in terms of standard microwave performance ...
Vincent J. Urick
doaj   +3 more sources

Assignment of hybrid laser and microwave inter-satellite links for navigation satellite systems [PDF]

open access: yesScientific Reports
A hybrid network comprising both laser and microwave inter-satellite links (ISLs) has been established within navigation satellite constellations. Leveraging the flexible construction of microwave links and the high ranging accuracy and communication ...
Nan Wang   +6 more
doaj   +2 more sources

Colocation in Time and Space of High-Precision Two-Way Optical and Microwave Observations for Calibration of a Microwave Ranging Link—The ACES Mission Case

open access: yesRemote Sensing, 2023
The ACES mission of the European Space Agency combines optical and microwave-based geodetic observation techniques with highly accurate atomic clocks to achieve a new level of accuracy for geodesy and fundamental physics applications.
Peter Vollmair   +2 more
doaj   +1 more source

Real-Time Rainfall Estimation Using Microwave Links: A Case Study in East China during the Plum Rain Season in 2020

open access: yesSensors, 2021
Accurate and real-time rainfall estimation is a pressing need for forecasting the flood disaster and reducing the loss. In this study, we exploit the potential of estimating the rainfall by microwave links in East China.
Kun Song, Xichuan Liu, Taichang Gao
doaj   +1 more source

Highly Efficient Circularly Polarized Radial Line Slot Array Antenna Using Non-Uniform Slot Density for 5G Communication System

open access: yesIEEE Access, 2023
Radial Line Slot Array (RLSA) antennas have appealing features including high gain and high efficiency combined with a low profile. Especially by highlighting their structural simplicity, RLSA antennas can be good competitors to reflector antennas if the
Onur Cumurcu   +2 more
doaj   +1 more source

A New Primary Protection Method With Received Power-Based 3D Antenna Rotation Range Prediction for Dynamic Spectrum Access

open access: yesIEEE Access, 2021
We propose a new primary protection method for Dynamic Spectrum Access (DSA), in which a secondary system uses a frequency band assigned to a primary system.
Hiroto Kuriki   +3 more
doaj   +1 more source

Microwave Link License Fee for 5G Backhaul Connectivity (Study Case: Indonesia)

open access: yesBuletin Pos dan Telekomunikasi: Media Komunikasi Ilmiah, 2023
Frequency is a limited resource that cannot be made by humans. Therefore, its usage needs to be regulated so new technology like 5G still get frequency allocation. The 28 GHz frequency is an option that can be used in Indonesia for 5G technology, because
Alvin Yusri   +2 more
doaj   +1 more source

Hydrometeor Identification Using Multiple-Frequency Microwave Links: A Numerical Simulation

open access: yesRemote Sensing, 2020
A method for identifying hydrometeor types (rain, graupel, and wet snow) based on a microwave link is proposed in this paper. The measured hydrometeor size distribution (HSD) data from the winters of 2014 to 2019 in Nanjing, China, were used to carry out
Kang Pu   +3 more
doaj   +1 more source

Estimating Water Vapor Using Signals from Microwave Links below 25 GHz

open access: yesRemote Sensing, 2021
Water vapor is a key element in both the greenhouse effect and the water cycle. However, water vapor has not been well studied due to the limitations of conventional monitoring instruments.
Kun Song   +3 more
doaj   +1 more source

An Optimized Planning Tool for Microwave Terrestrial and Satellite Link Design

open access: yesFuture Internet, 2023
Today, the internet is fundamental to social inclusion. There are many people that live in remote areas, and the only way to supply internet services is through the use of microwave terrestrial and satellite systems.
Eduardo Ferreira   +4 more
doaj   +1 more source

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