Free Access

Fig. 4.


Residual cylindrically averaged power spectra after applying GPR. From left to right, top to bottom: direct FT inversion, nearest-neighbour gridding (no oversampling), default settings for WSCLEAN, default settings for IDG, increased oversampling and kernel size settings for WSCLEAN, and the same, but with a high number of w layers. To highlight the excess power, not all power spectra use the same colour maps. Black dashed line: Horizon wedge. Pink dashed line: Same with additional space for the windowing function. Blue dashed line: primary beam (5°) wedge. Gridding parameters are abbreviated as follows: o = oversampling factor, s = gridding kernel size, nwl = number of w-layers, and p = padding factor.

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.