MID-Radio Telescope, Single Pixel Feed Packages for the Square Kilometer Array: An Overview
| Autor: | I. P. Theron, Jonas Flygare, Lei Liu, M. Jones, Robert Lehmensiek, Robert E. J. Watkins, Alice Pellegrini, Yang Wu, Biao Du, Jamie Leech, Andre Hector, Adriaan Peens-Hough, Angela C. Taylor |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Offset (computer science)
SKA Bandwidth (signal processing) FOS: Physical sciences TK5101-6720 Electric apparatus and materials. Electric circuits. Electric networks radio astronomy Radio telescope Dish MID-telescope Kilometer radio telescope Telecommunication Square (unit) Antenna (radio) Wideband single pixel feed Astrophysics - Instrumentation and Methods for Astrophysics TK452-454.4 Instrumentation and Methods for Astrophysics (astro-ph.IM) Geology Remote sensing Radio astronomy |
| Zdroj: | IEEE Journal of Microwaves, Vol 1, Iss 1, Pp 428-437 (2021) |
| ISSN: | 2692-8388 |
| Popis: | The Square Kilometre Array (SKA) project is an international effort to build the world’s largest radio telescope, enabling science with unprecedented detail and survey speed. The project spans over a decade and is now at a mature stage, ready to enter the construction and integration phase. In the fully deployed state, the MID-Telescope consists of a 150-km diameter array of offset Gregorian antennas installed in the radio quiet zone of the Karoo desert (South Africa). Each antenna is equipped with three feed packages, that are precision positioned in the sub-reflector focus by a feed indexer platform. The total observational bandwidth (0.35-15.4GHz) is segmented into seven bands. Band 1 (0.35 – 1.05 GHz) and Band 2 (0.95 – 1.76 GHz) are implemented as individual feed packages. The remaining five bands (Bands 3, 4, 5a, 5b, and 6) are combined in a single feed package. Initially only Band 5a (4.6 – 8.5 GHz) and Band 5b (8.3 – 15.4 GHz) will be installed. This paper provides an overview of recent progress on design, test and integration of each feed package as well as project and science goals, timeline and path to construction. |
| Databáze: | OpenAIRE |
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