A high speed networked signal processing platform for multi-element radio telescopes

Prasad, Peeyush; Subrahmanya, C.R.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4066

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DC Field	Value	Language
dc.contributor.author	Prasad, Peeyush	-
dc.contributor.author	Subrahmanya, C.R.	-
dc.date.accessioned	2011-08-08T11:19:19Z	-
dc.date.available	2011-08-08T11:19:19Z	-
dc.date.issued	2011-02	-
dc.identifier.citation	Experimental Astronomy, 2011, Vol.31, p1	en
dc.identifier.issn	0922-6435	-
dc.identifier.issn	1572-9508 (Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/4066	-
dc.description	Restricted Access. An open-access version is available at one of the alternative locations.	en
dc.description.abstract	A new architecture is presented for a Networked Signal Processing System (NSPS) suitable for handling the real-time signal processing of multielement radio telescopes. In this system, a multi-element radio telescope is viewed as an application of a multi-sensor, data fusion problem which can be decomposed into a general set of computing and network components for which a practical and scalable architecture is enabled by current technology. The need for such a system arose in the context of an ongoing program for reconfiguring the Ooty Radio Telescope (ORT) as a programmable 264-element array, which will enable several new observing capabilities for large scale surveys on this mature telescope. For this application, it is necessary to manage, route and combine large volumes of data whose real-time collation requires large I/O bandwidths to be sustained. Since these are general requirements of many multi-sensor fusion applications, we first describe the basic architecture of the NSPS in terms of a Fusion Tree before elaborating on its application for the ORT. The paper addresses issues relating to high speed distributed data acquisition, Field Programmable Gate Array (FPGA) based peer-topeer networks supporting significant on-the fly processing while routing, and providing a last mile interface to a typical commodity network like Gigabit Ethernet. The system is fundamentally a pair of two co-operative networks, among which one is part of a commodity high performance computer cluster and the other is based on Commercial-Off The-Shelf (COTS) technology with support from software/firmware components in the public domain.	en
dc.language.iso	en	en
dc.publisher	Springer Science+Business Media B.V. 2011	en
dc.relation.uri	http://dx.doi.org/10.1007/s10686-011-9216-7	en
dc.relation.uri	http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ExA...tmp....6P&link_type=PREPRINT&db_key=AST	en
dc.relation.uri	http://adsabs.harvard.edu/doi/10.1007/s10686-011-9216-7	en
dc.rights	Springer Science+Business Media B.V.2011	en
dc.subject	Radio interferometry	en
dc.subject	High speed networks	en
dc.subject	Signal processing	en
dc.subject	FPGA	en
dc.subject	Multibeam phased array	en
dc.subject	Distributed real-time processing	en
dc.title	A high speed networked signal processing platform for multi-element radio telescopes	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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