Measurements of refractive variability in the marine boundary layer in comparison with mesoscale meteorological model predictions

Förster, Jörg; Riechen, Joerg

doi:10.1117/12.690138

Cited by 3 publications

(2 citation statements)

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“…Moreover, e and T represent water vapor pressure and temperature, respectively. Considering the influence of the curvature of the Earth, the corrected atmospheric refractive index is expressed as follows (Forster and Riechen, 2006):…”

Section: Atmospheric Refraction Factormentioning

confidence: 99%

Performance analysis of code division multiplexing communication under evaporation duct environment

Liu

Shi

et al. 2022

Front. Signal Process.

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The evaporation duct is an effective means for realizing non-line-of-sight (NLOS) wireless transmission over the sea. However, the effects of marine weather conditions on electromagnetic propagation have rarely been studied. In this study, the influence of the marine atmospheric environment on electromagnetic propagation was analyzed through numerical simulation. Additionally, the impacts of antenna height, transmission distance, and electromagnetic wave frequency on path loss were studied. Finally, the link capacity of the code division multiplexing (CDM) communication system in the evaporation duct environment was studied via numerical analysis and simulations. Simulation results demonstrated that CDM communication technology can improve the link capacity under an evaporation duct compared with that of the spread-spectrum communication technology.

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Section: Atmospheric Refraction Factormentioning

confidence: 99%

Performance analysis of code division multiplexing communication under evaporation duct environment

Liu

Shi

et al. 2022

Front. Signal Process.

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“…A number of measurement campaigns have also been conducted in the Baltic sea, mainly focused on studying evaporation ducts. During these campaigns a combination of in situ measurements, radiosondes, and microwave measurements were performed and reported (see, e.g., Scholz and Förster, 2003;Förster et al, 2004;Essen et al, 2004;Förster and Riechen, 2006;Essen et al, 2012;Danklmayer et al, 2013Danklmayer et al, , 2015Danklmayer et al, , 2016a.…”

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confidence: 99%

Observations of anomalous propagation over waters near Sweden

Norin

2022

Preprint

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Abstract. Radio waves propagating in the atmosphere are affected by the prevailing atmospheric state. The state of the atmosphere can cause radio waves to refract more or less towards the ground. When the refractive index of the atmosphere differs from standard atmospheric conditions the propagation is called anomalous. Radars which are affected by anomalous propagation can receive ground clutter far beyond the radar horizon. In this work 4.5 years of data from five operational Swedish C-band dual polarization weather radars are presented. Analyses of the data reveal a strong seasonal cycle and weaker diurnal cycle in ground clutter from coastal regions across nearby waters. The impact of anomalous propagation on ground clutter, measured with horizontal and vertical polarization, was compared but no clear difference was found.

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Observations of anomalous propagation over waters near Sweden

Norin¹

2023

Atmos. Meas. Tech.

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Abstract. Radio waves propagating in the atmosphere are affected by the prevailing atmospheric state. The state of the atmosphere can cause radio waves to refract more or less towards the ground. When the refractive index of the atmosphere differs from standard atmospheric conditions, the propagation is considered to be anomalous. Radars which are affected by anomalous propagation can observe ground clutter far beyond the radar horizon. In this work, 4.5 years' worth of data from five operational Swedish C-band dual-polarization weather radars are presented. Analyses of the data reveal a strong seasonal cycle and a weaker diurnal cycle in ground clutter from coastal regions across nearby waters. A comparison was drawn between the impacts of anomalous propagation on ground clutter measured with horizontal polarization and vertical polarization, respectively; however, no clear difference was found.

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Measurements of refractive variability in the marine boundary layer in comparison with mesoscale meteorological model predictions

Cited by 3 publications

References 0 publications

Performance analysis of code division multiplexing communication under evaporation duct environment

Performance analysis of code division multiplexing communication under evaporation duct environment

Observations of anomalous propagation over waters near Sweden

Observations of anomalous propagation over waters near Sweden

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