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39 387 (0,441s)

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Refractivity Height Profile Estimations Based on Radiowave Refraction Simulations

The paper describes possibilities of refractive index height profile estimations using field measurement at a receiver site of a terrestrial point-to-point link in terms of angle-of-arrival (AOA) spectra. Several refractivity

JA - Elektronika a optoelektronika, elektrotechnika

  • 2005
  • A
Result

Estimation of the Refractivity Structure of the Lower Troposphere From Measurements on a Terrestrial Multiple-Receiver Radio Link

agreement between the estimated and measured refractivity profiles during periodsA matched field technique is used for remote sensing of refractivity profile. The method relies on electromagnetic propagation simulation to ...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2011
  • Jx
  • Link
Result

Remote Sensing of Refractivity Profile using Angle of Arrival Spectra

Knowledge of refractive index height dependence enables prediction of field strength at a receiver site of the communication link. This paper presents possibilities of the refractivity estimation based on the received field...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2005
  • D
Result

Novel Method of Vertical Refractivity Profile Estimation using Angle of Arrival Spetra

of refractivity profile are introduced to improve the estimation for various refractivityRefractivity profile variation in lower part of the atmosphere is one of the aspects that influences long-distance terrestri...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2005
  • A
Result

Estimation of Refractive Index Profile of Troposphere

, by distributionof refractive index which, to certain extent, can determine the radiowave propagation behaviour. The aim of the dissertation is to develop a method for estimation of refractive index in lower atmosphere....

JA - Elektronika a optoelektronika, elektrotechnika

  • 2006
  • D
Result

Estimation of Radio Refractivity Profile Gradient From Multiple LOS Links Using Artificial Neural Networks - First Results

The question of a vertical refractivity gradient estimation is discussed herein. Artificial neural networks have been used as a tool to verify the existence of an unambiguous relationship between the vertical refractivity g...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2012
  • D
Result

Implementation Issues of the Matched Field Processing Method of Refractivity Structure Sounding

As the atmospheric conditions, expressed in terms of radio refractivity can, there is a need for reliable prediction of refractivity structure in the košer atmosphere.The paper is focused on the remote sensing of refractivity

JA - Elektronika a optoelektronika, elektrotechnika

  • 2007
  • D
Result

Refractivity Profile Estimation using Signal Strength Measurement

Refractivity profile variation in lower part of the atmosphere is one of the aspects that influences long-distance terrestrial electromagnetic wave propagation and consequently performance of communication systems. This paper describes possi...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2005
  • A
Result

Estimation of a horizontal refraction in a geodetic network

The proposed thesis is focused on reviewing the horizontal refraction during the refraction model was arranged in a way that the questions were solved by the identity of the horizontal refraction. The necessary part of the ...

DE - Zemský magnetismus, geodesie, geografie

  • 2016
  • Jx
  • Link
Result

Remote Sensing of Refractive Index in Atmosphere

Long-range electromagnetic wave propagation is to certain extent influenced by height distribution of refractive index in the troposphere. The usual way of refractive index height dependence consists of radiosonde measurement. The p...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2005
  • D
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