Phase Calibration

The goal of phase calibration is to compensate for slow atmospheric phase drifts. As in the bandpass calibration, a qualifier is available in the Date.IPB file to identify phase calibrators and the information comes from the OBS $\backslash$SOURCE command in the OBS program. Phase calibrators have their velocity type forced to NULL, to indicate that the receiver frequency should not be changed at all (no doppler shift).

Phase calibration can be applied to observations of other sources within CLIC using the CLIC $\backslash$SOLVE PHASE command.