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		<citationkey>Sirothia::FiCoBa</citationkey>
		<title>Finalização do correlacionador baseado em FPGA e avanço na obtenção de imagens solares bidimensionais com o BDA-II</title>
		<project>Processo FAPESP 2014/00575-6</project>
		<type>RPQ</type>
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		<author>Sirothia, Sandeep,</author>
		<electronicmailaddress>sirothia@gmail.com</electronicmailaddress>
		<e-mailaddress>cesar.strauss@inpe.br</e-mailaddress>
		<institution>Instituto Nacional de Pesquisas Espaciais</institution>
		<city>São José dos Campos</city>
		<transferableflag>1</transferableflag>
		<keywords>interferometria, imagens solares, correlacionador, BDA.</keywords>
		<abstract>Na segunda fase do Arranjo Decimétrico Brasileiro BDA (BDA-II), 26 antenas foram instaladas e depuradas para produzir imagens bidimensionais do Sol em alta resolução (100 ms) e sínteses completas de observações de campos Galáticos e Extragaláticos. O intervalo de frequência de 1.2-1.7 GHz está operacional no BDA II. Usando 14 antenas do sistema BDA-II, fomos capazes de fazer observações do Sol, nebulosa Crab e do pulsar Vela. Neste relatório apresentamos as imagens 2D iniciais do Sol e nebulosa Crab usando informação somente de fase das visibilidades do BDA a 1,405 GHz. A resolução espacial obtida na imagem Crab foi de 278,981 por 145,556 (arcsec) a pa 10,8244 (deg) o que está de acordo com as linhas de base das antenas do BDA-II utilizadas. Também apresentamos a detecção inicial do sinal do pulsar Vela usando o BDA-II. Atualmente continuamos os esforços de depuração para solucionar os problemas de sensitividade e o uso simultâneo de amplitude e fase das observações do BDA. ABSTRACT: In the second phase of the Brazilian Decimetric Array, BDA (BDA-II), 26 antennas were installed and debugged to perform high time resolution (100ms) two dimensional imaging of the Sun and full synthesis observations of the Extragalactic, Galactic fields. The frequency range 1.2-1.7 GHz is operational in BDA II. Using the 14 antennas of BDA-II system we were able to make observation of Sun, Crab nebulae and the Vela pulsar. In this report we present the initial 2D images of Sun and Crab nebulae using the phase only information from the BDA visibilities at 1.405 GHz. The spatial resolution obtained in the Crab image was 278.981 by 145.556 (arcsec) at pa 10.8244 (deg) which is in accordance with the BDA-II baselines of the antennas used. We also present the initial detection of the Vela pulsar signal using the BDA-II. Currently we continue our debugging efforts to resolve the sensitivity issues and simultaneous use of amplitude and phase information from of BDA-II observations.</abstract>
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		<language>en</language>
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