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--- projects:mkat_sband:pub:results_obs [2022/11/23 13:23]
wucknitz
+++ projects:mkat_sband:pub:results_obs [2023/06/23 14:14] (current)
wucknitz
@@ Line 926: / Line 926: @@
 {{:projects:mkat_sband:pub:1636719400_phaseff_obsfreq.png?direct&250}}
+Here is the same, but scaled to 600 MHz frequency (lower end of UHF). The dispersive and non-dispersive effects are of course scaled separately.
+{{:projects:mkat_sband:pub:1636719400_phaseff_600mHz.png?direct&250}}
+Results of a more general statistical analysis can be found in {{:projects:mkat_sband:pub:1636719400_phaseff_obsfreq.pdf}}. Each page is for a selection of antennas. The upper panels show the phasing efficiency for each time bin calibrated with each other time bin. The lower panel show this as function of time lag between calibration and target time (percentiles for certain fractions of the time). Not that the number of samples is small on the right end of this plot, so it is less statistically meaningful there.
+The same is available scaled to 600 MHz in {{:projects:mkat_sband:pub:1636719400_phaseff_600mHz.pdf}}.
+Note that the phases are more stable in UHF than S band. This is because in S band the ionosphere is only a very minor contribution. The troposphere scales down at lower frequency. The ionosphere becomes more important but still is not too problematic. The behaviour is slightly different at long baselines, where the ionosphere is comparatively stronger, because its gradients extend over longer distances.
@@ Line 1009: / Line 1018: @@
 {{:projects:mkat_sband:pub:1638617387_phaseff_obsfreq.png?direct&250}}
+Here the same for 600 MHz:
+{{:projects:mkat_sband:pub:1638617387_phaseff_600mHz.png?direct&250}}
+And here the statistics for the observed frequency and for 600 MHz:
+{{:projects:mkat_sband:pub:1638617387_phaseff_obsfreq.pdf}}
+{{:projects:mkat_sband:pub:1638617387_phaseff_600mHz.pdf}}

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