Differences
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projects:mkat_sband:pub:fringefit [2020/11/10 14:53] wucknitz |
projects:mkat_sband:pub:fringefit [2020/11/10 14:56] (current) wucknitz |
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| {{:projects:mkat_sband:pub:1603186576_linxy_ant_disp.png?direct&600|gradient fit for antenna-based dispersive delay}} | {{:projects:mkat_sband:pub:1603186576_linxy_ant_disp.png?direct&600|gradient fit for antenna-based dispersive delay}} | ||
| - | We see that the gradient fit (green) fits the observations (red) almost exactly for all stations. For the innermost stations (top) the noise dominates the signal, but the systematic variations still agree very well. This means the ionosphere really acts mostly as a large-scale time-varying gradient. | + | We see that the gradient fit (green) fits the observations (red) almost exactly for all stations. For the innermost stations (left) the noise dominates the signal, but the systematic variations still agree very well. This means the ionosphere really acts mostly as a large-scale time-varying gradient. |
| Here is the result for the non-dispersive delay:\\ | Here is the result for the non-dispersive delay:\\ | ||
| {{:projects:mkat_sband:pub:1603186576_linxy_ant_nondisp.png?direct&600|gradient fit for antenna-based non-dispersive delay}} | {{:projects:mkat_sband:pub:1603186576_linxy_ant_nondisp.png?direct&600|gradient fit for antenna-based non-dispersive delay}} | ||
| - | For the outer stations (bottom) the agreement is still pretty good, but this is because we have only a few outer stations, which thus have a strong lever arm and dominate the solution. In contrast to the dispersive delay, this solutions does not fit the inner stations (top) well. Fluctuations there are dominated by small-scale and more local variations. | + | For the outer stations (right) the agreement is still pretty good, but this is because we have only a few outer stations, which thus have a strong lever arm and dominate the solution. In contrast to the dispersive delay, this solutions does not fit the inner stations (left) well. Fluctuations there are dominated by small-scale and more local variations. |
