1 Tecnologia e Insumos Estratégicos, Secretaria de Ciência, Ministério da Saúde. Esplanada dos Ministérios Edifício Sede/ sala 851, Esplanada. 70070-600 Brasilia DF. [email protected] 2 Centro de Ciência da Saúde, Universidade Federal do Recôncavo da Bahia. 3 Faculdade de Ciências da Saúde, Universidade de Brasília. Brazilian Men’s Integral Health Attention: using indicators for monitoring health’s...

GNSS receivers provide position information in a convenient way. However, additional orientation information cannot be fulfilled directly by a single antenna receiver up to now. This paper describes an approach for determination of orientation using a single GNSS receiver based only on its own static observations. As estimable base quantity, satellite positions are used as a reference in the mo...

Antenna arrays are likely to be an important feature of future mobile communication systems. With an antenna array, mobile users can be separated by a spatial filtering procedure allowing several users on the same carrier frequency. The uplink part (mobile to base) not only can, but is better solved without using any spatial knowledge in terms of direction of arrival (DOA). However, DOA estimat...

The paper presents the results of development and modelling a broadband antenna system for Unmanned Aerial Vehicle (UAV) direction finding. research covered issues analytical description based on prototype – Vivaldi antennas. article mathematical element model. An experimental relationship between geometrical parameters characteristics has been established. A review current state issue designin...

The radio system for very/ultra high frequency (VHF/UHF) spectrum monitoring and signal processing used in direction finding is presented this paper. This main function based on the implementation of a 6-channel VHF/UHF receiver. multicoupler unit allows selection desired band analysis verified according to user requirements. Several measured electrical characteristics receiver are just illustr...