Free Access
Table 4.
Average normalized absolute difference between the input power spectrum and the recovered power spectrum of the H I plus noise signal (NRec) for the central frequency (≈1.1 GHz) with β = 0.25.
| Number of feeds | 28 (D.R.) | 31 (HEX) | 56 (D.R.) | ||
|---|---|---|---|---|---|
| Integration time (y) | 1 | 2 | 5 | 1 | 1 |
| NRec (%) GNILC | 21.43 | 20.12 | 14.31 | 21.05 | 19.6 |
| NRec (%) PCA | 20.37 | 18.93 | 12.87 | 20.13 | 18.2 |
Notes. “D.R.” stands for “double rectangular” and “HEX” for “hexagonal arrays”.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.