Accession Number : ADP006169

Title :   Propagation Prediction for the North Sea Environment,

Corporate Author : DORNIER SYSTEM G M B H FRIEDRICHSHAFEN (GERMANY F R)

Personal Author(s) : Vieth, R.

Report Date : SEP 1989

Pagination or Media Count : 7

Abstract : Evaporation ducting can have an important influence on the propagation of electromagnetic waves. The dependence of those ducting conditions on geographic location requires an estimate of occurrence and effects of ducting in various areas. Duct height statistics using long term statistical meteorological data in combination with propagation models are used for this purpose. In this paper, Jeske's propagation measurements (1) during 1961 at the German coast of the North Sea were taken and compared with the calculated results from the combination of the statistical weather data base and the propagation models, as well as another measurement program performed in Greece (2). A brief description of the models is followed by an example of the results of the Greek measurements. The German experimental data and duct height distributions for that region are described. Finally the results of measurements and calculations are discussed. A good agreement was found between measured propagation data and predictions based on climatological averages.

Descriptors :   *ELECTROMAGNETIC WAVE PROPAGATION, *WEATHER FORECASTING, *NORTH SEA, AEGEAN SEA, TRANSMISSION LOSS.

Subject Categories : Radiofrequency Wave Propagation
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE