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Command SOLVE DELAY is used mainly at the observatory. After plotting the phase of a calibrator as a function of IF1 frequency, one fits a residual delay $ \Delta \tau$ to the data, following:

$\displaystyle \phi = \pm 2\pi\Delta \tau \nu_{IF1}$ (21)

The $ \pm$ sign depend on the sign of the baseband conversion (LSB or USB). It is recommended to use an antenna-like plot to get better signal to noise.

Gildas manager 2022-01-17