Title:	RRI Efficient Linear-array Imager: salient aspects
Authors:	Balasubramanyam, R.
Keywords:	Laser beams Imaging Telescopes , Rail to rail inputs Receivers Prototypes
Issue Date:	Jun-2019
Publisher:	IEEE
Citation:	URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019, New Delhi, India
Abstract:	Recently, a new optics entitled Efficient Linear-array Imager [1] has been proposed to use radio receivers efficiently for imaging the skies. The new optics demonstrates that it is possible to trade instantaneous sensitivity to instantaneous field-of-view while conserving the AΩ product. For a dish of size D fitted with N receivers, this product is ~D 2 N. This can be rewritten as 2 (D × D/N/2) × (N/2) 2 . The first part, 2 (D × D/N/2), implies two orthogonal areas of elliptical cross section with an N/2 aspect ratio. The second part, (N/2) 2 , indicates the number of simultaneous beams formed with N receivers. Thus, the resultant configuration is two telescopes of elliptical cross sections laid in a cross-configuration, each fitted with N/2 receivers. Then, by cross correlating each set of receivers with the orthogonal set of receivers, one obtains the (N/2) 2 beams.
Description:	Restricted Access
URI:	http://hdl.handle.net/2289/7674
ISBN:	Electronic ISBN:978-908-25987-5-9 USB ISBN:978-908-25987-4-2
Alternative Location:	https://ieeexplore.ieee.org/document/8738693
Copyright:	2019, IEEE
Additional information:	Date of Conference : 09 - 15 March 2019, New Delhi, India
Appears in Collections:	Research Papers (A&A)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.