Abstract Direction finding using a cylindrical array of dipoles has been implemented in presence large scatterers. A different number scatterers the simulations are used. The effect is considered by harmonic expansion scattered field. These fields computed analytically. direction process verified comparison with phase difference method HFSS simulator environment. error induced mechanism estimat...

This paper focuses on assessing the limitations in the direction-finding process of radio sources with directional antennas in an urbanized environment, demonstrating how signal source antenna parameters, such as beamwidth and maximum radiation direction affect bearing accuracy in non-line-of-sight (NLOS) conditions. These evaluations are based on simulation studies, which use measurement-teste...

254 INTRODUCTION The detection, classification, and geo-location of ground-based signal sources is one of the primary missions of modern military surveillance aircraft. Example signals of interest are the search radar of an enemy missile site, the radio communications between enemy combatants, and the distress radio beacon being transmitted by a downed friendly pilot. The ability to locate such...

Trace gas and particle emissions from domestic and industrial biofuel use and garbage burning in central Mexico T. J. Christian, R. J. Yokelson, B. Cárdenas, L. T. Molina, G. Engling, and S.-C. Hsu University of Montana, Dept. of Chemistry, Missoula, MT, USA National Center for Environmental Research and Training, National Institute of Ecology/SEMARNAT, Mexico, DF, Mexico Dept. of Earth, Atmosp...

Background: Following the outbreak of eltor cholera in Iraq’s Kurdistan, Iran was threatened through the western border. Therefore, the aim of the present study was to evaluate the health system response of Marivan city in Kurdistan Province (Iran) as a risky gateway for the outbreak of eltor cholera epidemic in Iran. Materials and Methods: This cross-sectional study was implemented in...

establishing and operating private radio and television and its possible activity beside state radio and television is the selective method of administering radio and television in many countries worldwide. in legal system of iran, state run radio and television in article 44 of the constitution and interpretation of guardian council of mentioned article, establishing private radio and televisi...

A highly desired property in complex real-time distributed computer systems (DCS's) is the high degree of autonomy of the various subsystems that compose the DCS. In recent years, we have formulated two system structuring techniques which could be used as basic tools for enhancing the subsystem autonomy: (1) the RTO.k object structuring scheme and (2) the Hitachi-UCI (HU) Data Field (DF) inter-...