Accession Number : ADA330229

Title :   Performance Comparison of Tropospheric Propagation Models: Ray-Trace Analysis Results Using Worldwide Tropospheric Databases

Descriptive Note : Final rept., 1 Oct 96-30 Sep 97

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC COMMAND CONTROL COMMUNICATIONS COMPUTERS AND INTELLIGENCE

Personal Author(s) : Choi, Junho

PDF Url : ADA330229

Report Date : 30 SEP 1997

Pagination or Media Count : 132

Abstract : The report describes the performance of three databases and tropospheric models and covers the analysis results for several selected refractivity and range/angle error models, three empirical databases of global climatological, and meteorological data. Most performance comparisons are conducted through time delay, range error, and angle of error for areas of interests on different climatology to induce reasonable conclusions. A modified exponential model is proposed as the best performer among the many models examined based on the level of accuracy, minimum level of the databases including surface weather data, and the real time data applicability.

Descriptors :   *RAY TRACING, *TROPOSPHERE, *RADIO TRANSMISSION, *ATMOSPHERIC REFRACTION, DATA BASES, IONOSPHERE, REAL TIME, REFRACTIVE INDEX, ANGLE OF ARRIVAL, SYNTHETIC APERTURE RADAR, METEOROLOGICAL DATA, TABLES(DATA), CLIMATOLOGY, TROPOSPHERIC SCATTER COMMUNICATIONS.

Subject Categories : Atmospheric Physics
      Meteorology
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE