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Designation of the troposphere radio refractivity for the area of the military aerodrome in Dęblin

Kirschenstein Małgorzata, Krasuski Kamil

Journal of KONBiN

2019

Vol. 49, iss. 3

137--158

The radio refractivity is one of major parameters in troposphere monitoring over a selected military aerodrome. The paper makes an in-depth analysis and description of the results of radio refractivity of the troposphere zone. The radio refractivity of the troposphere zone was estimated for the area of the military aerodrome EPDE in Dęblin, Poland. The radio refractivity of the troposphere zone was calculated using empirical troposphere models for the GNSS satellite technique as well as real meteorological data from the SYNOP message. In the paper, the authors demonstrate the results of wet, hydrostatic and total radio refractivity of the troposphere zone for EPDE military aerodrome. The SA and UNB3m models were applied in numerical computations of troposphere refractivity in an annual period.

Refrakcyjność fal radiowych jest jednym z głównych parametrów monitorowania troposfery na wybranym lotnisku wojskowym. W artykule dokonano pogłębionej analizy i opisu wyników załamania radiowego w warstwie troposfery. Refrakcyjność radiową warstwy troposfery oszacowano dla obszaru lotniska wojskowego EPDE w Dęblinie. Refrakcyjność radiowa warstwy troposfery została obliczona przy użyciu empirycznych modeli troposfery dla techniki satelitarnej GNSS, a także rzeczywistych danych meteorologicznych z depeszy SYNOP. W artykule autorzy przedstawiają wyniki mokrej, hydrostatycznej i całkowitej refrakcji radiowej warstwy troposfery dla lotniska wojskowego EPDE. Modele SA i UNB3m zastosowano w obliczeniach numerycznych refrakcji troposfery w okresie rocznym.

Statistical Estimation and Mathematical Modelling of Tropospheric Radio Refractivity Based on Meteorological Data

Alimgeer K. S., Awais M., Ijaz B., Khan S. A., Subhan F., Ahmad N.

Metrology and Measurement Systems

2018

Vol. 25, nr 1

115--128

To obtain optimal performance, estimation of radio refractivity is essential in planning and design of radio links/systems. The dependence of radio refractivity on different climatic parameters such as temperature, pressure, humidity and scale height is studied. The method proposed by International Telecommunication Union (ITU) is used in calculation of tropospheric radio refractivity. The main objective of this work is to formulate a mathematical equation/expression which can be used to predict/estimate the value of radio refractivity for an arbitrary day of any year, with a low error of estimation, in a local environment. Sensitivity of radio refractivity to temperature, pressure and humidity has been evaluated for a period of 5 years from 2008 to 2012, in a particular area under consideration. The results presented for tropospheric radio refractivity take into consideration both the location height and scale height parameters. The results are analysed in terms of statistical measures such as the moving averages, probability density function, monthly mean values, and their corresponding standard deviations. Finally, a mathematical model is formulated to calculate the radio refractivity for any day of a whole year. Reliability of error analysis in respect to accuracy is also shown. It was implemented in the industrial enterprise.