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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Tropospheric delay determination by Kalman filtering VLBI data

Fig. 3

ZWD ASD for Wettzell during CONT14. For the station Wettzell, Germany, ASD for time intervals between a few minutes and 1 day are shown logarithmically. The underlying ZWD time series is a first KF solution of CONT14. Additionally, the plot includes a linear fit without constraints (blue) and one assuming a random walk process (green). The value k represents the slope of the ASD in this log-log plot

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