Band S antenna set to integrate in Doppler meteorological radar system

• Grant number: 02/07910-8
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: June 01, 2003
• End date: January 31, 2005
• Field of knowledge: Engineering - Electrical Engineering - Industrial Electronics, Electronic Systems and Controls
• Principal Investigator: Luiz Manoel Dias Henriques
• Grantee: Luiz Manoel Dias Henriques
• Company: Omnisys Engenharia Ltda
• City: São Bernardo do Campo

Abstract

The objective of this project is two-fold: to develop a band S radar-antenna set controlled by a digital servo mechanism with a view to integrating it into the Doppler Meteorological Radar System under development in Omnisys, and to propose a solution for all the obsolete radars currently installed. The quality of the information received by the antenna depends on its speed of rotation, on the precision of its positioning, on the parameters of the radar pulse and on the gain characteristics, angular aperture, secondary lobes and beam format. One great difficulty found in the design of radar antenna sets was guaranteeing the information received with the increased gain from the antenna. This increase entails the use of ever larger, and yet more unstable, reflectors. Antennae with variable electromagnetic field came to be used in high power applications which demanded great precision. This solution, has shown itself, however, to be economically unviable for civil and short-range radar. The advent of digital technology allows for the adoption of new electromechanical micro-processed solutions which guarantee, at a low cost, high precision in the antenna’s movement. The project seeks, however, to study new electromechanical solutions for the support of antennae and servo-mechanism controls, and to develop a new radar-antenna set using digital technology. (AU)