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Development of Brazilian Decimetric Array (phase II)

Grant number: 06/55883-0
Support type:Research Projects - Thematic Grants
Duration: March 01, 2007 - February 28, 2015
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Astronomical Instrumentation
Principal Investigator:Hanumant Shankar Sawant
Grantee:Hanumant Shankar Sawant
Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brasil). São José dos Campos , SP, Brazil
Co-Principal Investigators:Francisco Carlos Rocha Fernandes ; Jose Roberto Cecatto
Associated grant(s):11/17183-5 - Design and development of low cost versatile correlator for BDA, AV.EXT
10/18698-6 - Testing interferometer response of Brazilian Decimetric Array - BDA by analog techniques, AV.EXT
10/18699-2 - Proposal for hardware/software and calibration of BDA solar observation with GPS, AV.EXT
Associated scholarship(s):12/00009-5 - Diagnosis of solar emissions in meter and decimeter wavelengths associated with coronal mass ejection (CME) and solar flares, BP.DR

Abstract

A radio-interferometer operating in 1,2-1,7; 2,8 and 5,6 GHGz, of high technology and low cost, called the Brazilian Decimetric Array - BDA, in under development for solar, galactic and extra galactic investigations and applications for the forecasting of space climate. The BDA project is being developed in 3 phases: Phase I: a prototype of 5 elements with antennae 4m in diameter and complete tracking system. Phase II: an array with 26 elements. Phase III: 12 additional antennae will be incorporated to the array maximum baselines of ~2.3 km to 1.2 km in the directions East-West and South, respectively. In Phase I all the sub-systems and software were developed and tested through solar observations and calibrated radio sources, the technical characteristics defines, the strategy for development and configuration of the array for the next phases, and the technology transfer was undertaken between overseas and Brazilian institutions and the training of personnel in interferometry techniques. This thematic project refers to the development of phase II: 20 elements will be added to the array, with the participation of local businesses. The 26 antennae will constitute a compact T-shaped array, with maximum baselines of 252 m in the East-West direction and 162 m in the direction of South. The operating frequencies will be 1,2-1,7; 2,8 and 5,6 GHz. In this phase, the BDA will provide a solar image every 100 meters with spatial resolution of 3 x 4 arc minutes. The resources requested correspond only to the antennae, the mechanical structure, to the front end and the reception and communication systems for the transmission of signals and control of the antennae for phase II. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
Onset and propagation of shock waves created by ejections of solar matter 

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SAWANT, HANUMANT S.; GOPALSWAMY, NATCHIMUTHUK; ROSA, REINALDO R.; SYCH, ROBERT A.; ANFINOGENTOV, SERGEY A.; FERNANDES, FRANCISCO C. R.; CECATTO, JOSE R.; COSTA, JOAQUIM E. R. The Brazilian decimetric array and space weather. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 73, n. 11-12, SI, p. 1300-1310, JUL 2011. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.