Prof.
Biao Du
(The 54th Research Insitute of China Electronics Technology Group Corporation (CETC54))
24/03/2010, 13:30
CETC54 experiences of ASKAP (Australian Square Kilometre Array Pathfinder) antenns mass production from design, manufactureing to commission in unattended area are firstly presented. The primary design of DVAC (Chinese Dish Verification Antenna) is introduced based on SKA Dish Verification Antenna System Functional Specifications. The R&D, construction and commission experiences of other radio...
Dr
Raj Mittra
(EMC Laboratory, Pennsylvania State University)
24/03/2010, 13:45
In this paper we discuss the problem of rigorous simulation of some of the potential candidates for the antenna designs being considered for the Square Kilometer Array (SKA) project. These include large arrays of wideband elements, such as Vivaldis that are mounted on complex structures, as well as reflector antenna systems with patch array feeds and support systems, e.g., struts. Accurate...
Mr
Wim van Cappellen
(ASTRON)
24/03/2010, 14:00
APERTIF is an SKA Pathfinder aiming to increase the survey speed of the Westerbork Synthesis Radio Telescope (WSRT) with a factor 20. With APERTIF, Phased Array Feed (PAF) systems will be installed on most of the WSRT dishes. A commonly observed effect plaguing wideband prime-focus reflector systems is an interaction between the feed and the reflector, commonly referred to as the ‘standing...
Dr
German Cortes
(Cornell University, Ithaca, NY, USA)
24/03/2010, 14:15
As the next generation radio telescope, the Square Kilometer Array aims to have a combined sensitivity and survey speed several orders of magnitude larger than any current astronomical instrument. Operating over a extremely wide frequency band, from 100 MHz to 10 GHz, in its initial configuration, it relies on different technologies to cover the band: aperture array (both, sparse and dense)...
Dr
Deborah Shepherd
(NRAO & SKA SA)
24/03/2010, 14:30
The Square Kilometer Array will be a radio telescope with roughly one million square metres of collecting area designed to study the universe with unprecedented speed and sensitivity. Effectively commissioning an array of instrumentation that will support the SKA design goals will be a daunting task both in terms of the timescale needed to bring new equipment on-line and in terms of developing...
Dr
Adrian Tiplady
(SKA South African)
24/03/2010, 14:45
A methodology is introduced to derive support and maintenance requirements for the SKA telescope system. These requirements are used to develop operational, support and maintenance models for SKA construction and operational phases, and can be used in design decision making. The models are optimised for a variety of scientific and cost metrics that will be introduced, and result in an...
Mr
Thomas Kusel
(SKA SA System Engineer)
24/03/2010, 15:00
The high R&D content combined with the high volume production nature of projects such as the SKA presents special challenges to the system engineering process. The process must be tailored to allow emerging technologies to be incorporated into the programme during development. At the same time, the process must ensure that production baselines are frozen sufficiently early to reduce...
Mr
Tim Colegate
(International Centre for Radio Astronomy Research / Curtin University)
24/03/2010, 15:15
We present some new telescope design solutions in "SKAcost" which incorporate all the receptor types under consideration for the Square Kilometre Array. The SKA Reference Design is a result of several years of science-engineering interaction and includes aperture arrays, and dishes with phased array feeds and/or single-pixel feeds, as receptors. The final mix of receptor types will be an...
