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| Content Provider | Springer Nature Link |
|---|---|
| Author | Bregman, Jaap D. |
| Copyright Year | 2004 |
| Abstract | Five out of six Square Kilometre Array (SKA) science programs need extensive surveys at frequencies below 1.4 GHz and only four need high-frequency observations. The latter ones drive to expensive high surface accuracy collecting area, while the former ask for multi-beam receiver systems and extensive post correlation processing. In this paper, we analyze the system cost of a SKA when the field-of-view (Fov) is extended from 1 deg2 at 1.4 GHz to 200 deg2 at 0.7 GHz for three different antenna concepts. We start our analysis by discussing the fundamental limitations and cost issues of wide-band focal plane arrays (FPA) in dishes and cylinders and of wide-band receptors in aperture arrays. We will show that a hybrid SKA in three different antenna technologies will give the highest effective sensitivity for all six key science programs. |
| Starting Page | 407 |
| Ending Page | 416 |
| Page Count | 10 |
| File Format | |
| ISSN | 09226435 |
| Journal | Experimental Astronomy |
| Volume Number | 17 |
| Issue Number | 1-3 |
| e-ISSN | 15729508 |
| Language | English |
| Publisher | Kluwer Academic Publishers |
| Publisher Date | 2004-01-01 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | aperture efficiency field-of-view focal plane arrays foreshortening efficiency system optimization Astronomy Statistics for Engineering, Physics, Computer Science, Chemistry & Geosciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |
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